Supplementary Material Final Submitted

Supplementary material S1

Ciprofloxacin, Danofloxacin, Difloxacin, Enrofloxacin, Flumequine, Marbofloxacin, Nalidixic acid, Norfloxacin, Oxolinic acid, Sarafloxacin, Sulfaguanidine, Sulfanilamide, Sulfachlorpyridazine, Sulfadiazine, Sulfadimethoxine, Sulfadoxine, Sulfamerazine, Sulfamethazine, Sulfamethizole, Sulfamethoxypyridazine, Sulfamonomethoxine, Sulfapyridine, Sulfaquinoxaline, Sulfathiazole, Sulfisoxazole, Sulfamoxole, Trimethoprim, Sulfamethoxazole, Erythromycin, Josamycin, Lincomycin, Spiramycin, Tilmicosin, Tylosin A, Gamithromycin, Tildipirosin, Tulathromycin, Virginiamycin, Pirlimycin, Acetyltylosin-2-O, Tylvalosin, Valnemulin, Rifampicin, Dapsone, Chlortetracycline, Epichlortetracycline, Epitetracycline, Oxytetracycline, Epioxytetracycline, Doxycycline,Tetracycline, Phenoxymethylpenicillin, Benzylpenicillin, Amoxicillin, Ampicillin, Dicloxacillin, Cloxacillin, Nafcillin, Oxacillin, Cefalexin, Cefalonium, Cefapirin, Cefoperazone, Desacetylcefapirin, Cefazolin, Cefquinome, Ceftiofur.

1,2-dichlorobenzene, 16ß-hydroxystanozolol, 17a-nortestosterone, 17a-trenbolone, 17ß-estradiol, 17ß-trenbolone, 2 4 6-triaminopyrimidine-5-carbonitrile, 2 4-dimethylaniline, 2ß-hydroxy-N- deethyltiamulin, 2ß-hydroxytiamulin, 3-O-acetyltylosin, 4 4'-dinitrocarbanilide/Nicarbazin (500) , 4- demethylgriseofulvin, 4-methylaminoantipyrine, 5-hydroxyflunixin, 5-hydroxythiabendazole, 6- demethylgriseofulvin, 8a-hydroxymutilin, 8a-hydroxy-N-deethyltiamulin, 8a-hydroxytiamulin, Abamectin B1a, Acepromazine, Acetylisovaleryltylosin, Acyclovir, AHD, Aklomide, Albendazole, Albendazole 2-aminosulfone, Albendazole sulfone, Albendazole sulfoxide, Allopurinol, Altrenogest, Ambroxol, Amdinocillin, Amethocaine, Amikacin, Aminitrozole, Amiodarone, Amitraz, AMOZ, Ampicillin, Amprolium, AOZ, Apramycin, Aristolochic acid, Arsanilic acid, Aspoxicillin, Atipamezole, Atracurium, Atropine, Avilamycin A, Azamethiphos, Azaperol, Azaperone, Azithromycin, Bacitracin A, Baquiloprim, Beclomethasone, Benzocaine, Benzylpenicillin, Betamethasone, Bethanechol, Bicozamycin, Bismuth subsalicylate, Bithionol, Bithionol sulfoxide, Boldenone, Brombuterol, Brotizolam, Budesonide, Bupivacaine, Buprenorphine, Buquinolate, Butorphanol, Carazolol, Carbadox, Carbamazepine, Carprofen, Cefazolin, Cefoperazone, Cefquinome, Ceftiofur, Cefuroxime, Cephacetrile, Cephalexin, Cephalonium, Cephapirin, Cetrimide, Chloramphenicol, Chloramphenicol glucuronide, Chlorbrombuterol, Chlorhexidine, Chlormadinone, Chlormadinone acetate, Chlorobutanol, Chlorotestosterone, Chlorpromazine, Chlortetracycline, Cimaterol, Cimbuterol, Ciprofloxacin, Cisapride, Clavulanic acid, Clenbuterol, Clencyclohexerol, Clenpenterol, Clenproperol, Clopidol, Clorsulon, Closantel, Cloxacillin, Codeine, Colchicine, Colistin, Coumaphos, Cyclosporin A, Cyfluthrin, Cyhalothrin, Cypermethrin, Cyproheptadine, Cyromazine, Danofloxacin, Dantrolene, Dapsone, Decoquinate (400), Deltamethrin, Derquantel, Desacetylcephapirin, Desethylene ciprofloxacin, Desfuroylceftiofur, Destomycin A, Detomidine, Dexamethasone, Diaveridine, Diazepam, Diazinon, Dichloroisoeverninic acid, Dichlorvos, Diclazuril (10), Diclofenac, Dicloxacillin, Dicyclanil, Dienestrol, Diethylstilbestrol, Difloxacin, Diflubenzuron, Digoxigenin, Digoxin, Dihydrostreptomycin, Dimetridazole, Diminazene, Dinitolmide, Dioctyl sulfosuccininc acid, Dobutamine, Domperidone, Dopamine, Doramectin, Dorzolamide, Doxycycline, Edrophonium, Efrotomycin A1, Efrotomycin A2, Efrotomycin B, Emamectin B1a, Enduracidin A, Enduracidin B, Enduracidin SA, Enflurane, Enrofloxacin, Epichlortetracycline, Epinephrine, Epioxytetracycline, Epitetracycline, Eprinomectin B1a, Erythromycin, Ethopabate, Ethynylestradiol, Etiproston, Famphur, Febantel, Fenbendazole, Fenoterol, Fenprostalene, Fentanyl, Fenthion, Fenvalerate, Firocoxib, Flambic acid, Florfenicol, Florfenicol alcohol, Florfenicol amine, Florfenicol oxamic acid, Fluazuron, Flubendazole, Flubendazole amine, Flumazenil, Flumequine, Flumethasone, Flumethrin, Flunixin, Flunixin, Fluorescein, Flurogestone, Flurogestone acetate, Fluticasone, Fosfomycin, Furaltadone, Furazolidone, Gabapentin, Gamithromycin, Gentamicin C1, Gentamicin C1a, Gentamicin C2, Gentamicin C2b, Glycarbylamide, Glycopyrrolate, Glycyrrhizic acid, Griseofulvin, Guaifenesin, Halofuginone (30), Haloperidol, Halothane, Haloxon, Hexestrol, Hydrocortisone, Hydroxyclenbuterol, Hydroxydimetridazole, Hydroxymetronidazole, Hygromycin B, Ibuprofen, Idoxuridine, Imidocarb, Imipramine, Iohexol, Iopamidol, Ipratropium, Isoeugenol, Isoflurane, Isometamidium, Isoxsuprine, Itraconazole, Ivermectin B1a, Josamycin, Kanamycin A, Ketamine, Ketoconazole, Ketoprofen, Ketorolac, Ketotriclabendazole, Laidlomycin, Lasalocid (1250), Latanoprost, Leucomalachite green, Leucomycin A1, Levamisole, Lidocaine, Lincomycin, Loperamide, Mabuterol, Maduramicin (50), Malachite green, Malathion, Mapenterol, Marbofloxacin, Mebendazole, Mebendazole amine, Mebolazine, Medroxyprogesterone, Medroxyprogesterone acetate, Mefanamic acid, Megestrol, Megestrol acetate, Melengestrol, Melengestrol acetate, Meloxicam, Menbutone, Metamizole, Methimazole, Methoprene, Methyl (5-(1-hydroxy-1-phenyl)methyl-1H-benzimidazol-2-yl)carbamate, Methylparaben, Methylprednisolone, Methylquinoxalinecarboxylic acid, Methyltestosterone, Methylthiouracil, Metoclopramide, Metoserpate, Metronidazole, Miconazole, Midazolam, Miloxacin, Mirosamicin, Moenomycin A, Moenomycin A12, Moenomycin C1, Moenomycin C3, Moenomycin C4, Monensin (1250), Monepantel, Monepantel sulfone, Monochloroflorfenicol, Morantel, Morphine, Moxidectin, Nafcillin, Naftalofos, Nalidixic acid, Naloxone, Nanafrocin, Nandrolone, Nandrolone phenpropionate, Naproxen, Narasin (700), N-deethyltiamulin, Neomycin B, Neospiramycin I, Neostigmine, Nequinate, Netobimin, Niclosamide, Nifurstyrenic acid, Nitarsone, Nitrofurantoin, Nitrofurazone, Nitromide, Nitroxynil, N-methyl-1 3-propanediamine, Noradrenalin, Norgestomet, Nosiheptide, Novobiocin, Nystatin A1, Nystatin A1, Nystatin A3, Nystatin A3, Ofloxacin, Olaquindox, Oleandomycin, Omeprazole, Orbifloxacin, Orciprenaline, Ormetoprim, Oxacillin, Oxfendazole, Oxfendazole sulfone, Oxibendazole, Oxolinic acid, Oxybuprocaine, Oxyclozanide, Oxymetazoline, Oxyphenbutazone, Oxytetracycline, Oxytocin, Parbendazole, Paromomycin, Penicillin V, Pentoxifylline, Permethrin, Pethidine, Phenoxybenzamine, Phenylbutazone, Phenylephrine, Phenytoin, Phosmet, Phoxim, Piperazine, Piperonyl butoxide, Pirlimycin, Polymyxin B1, Ponazuril, Praziquantel, Prednisolone, Prifinium, Prilocaine, Primidone, Procainamide, Progesterone, Propanolol, Propantheline, Propetamphos, Propionylpromazine, Propofol, Propylparaben, Propylthiouracil, Proxymetacaine, Pseudoephedrine, Pyraclofos, Pyrantel, Pyrimethamine, Quinidine, Quinoxalinecarboxylic acid, Ractopamine, Rafoxanide, Ranitidine, Rifampin, Rifaximin, Ritodrine, Robenidine (700), Romifidine, Ronidazole, Rose Bengal, Roxarsone, Salbutamol, Salinomycin (700), Salmeterol, Sarafloxacin, Sarmazenil, Sedecamycin, Semduramicin (250), Semicarbazide, Sevoflurane, Spectinomycin, Spiramycin I, Stanozolol, Streptomycin, Sucralfate, Sulfabenzamide, Sulfabromomethazine, Sulfacetamide, Sulfachloropyrazine, Sulfachlorpyridazine, Sulfadiazine, Sulfadimethoxine, Sulfadoxine, Sulfaethoxypyridazine, Sulfaguanidine, Sulfamerazine, Sulfamethazine, Sulfamethizole, Sulfamethoxazole, Sulfamethoxypyridazine, Sulfamonomethoxine, Sulfamoxole, Sulfamoyldapsone, Sulfanilamide, Sulfanitran, Sulfapyridine, Sulfaquinoxaline, Sulfathiazole, Sulfatroxazole, Sulfisoxazole, Sulfisozole, Sulfomyxin, Taleranol, Teflubenzuron, Temephos, Terbutaline, Terdecamycin, Terpin, Testosterone, Tetrachlorfenvinphos, Tetracycline, Theobromine, Thiabendazole, Thiamphenicol, Thiouracil, Tiamulin, Ticarcillin, Tildipirosin, Tiletamine, Tilmicosin, Timolol, Tiopronin, Tolfenamic acid, Toltrazuril, Toltrazuril sulfone, Triamcinolone acetonide, Tribromsalan, Trichlorfon, Triclabendazole, Triclabendazole sulfone, Triclabendazole sulfoxide, Triflumuron, Trimethoprim, Tripelennamine, Tropicamide, Tulathromycin, Tulobuterol, Tylosin A, Valnemulin, Vasopressin, Vedaprofen, Virginiamycin M1, Virginiamycin S1, Vitamin E, Xylazine, Zearalanone, Zeranol, Zilpaterol, Zolazepam.

2,4-D, 2-Phenylphenol, Abamectin, Acephate, Acetamiprid, Acetochlor, Acibenzolar-S-methyl, Aclonifen, Acrinathrin, Alachlor, Aldicarb, Aldicarb sulphone, Aldicarb sulphoxide, Aldrin (10), Allethrin, Amidosulfuron, Asulam, Atrazine, Azinphos-ethyl, Azinphos-methyl, Azoxystrobin, Benalaxyl, Bendiocarb, Benthiavalicarb-isopropyl, Benzyldimethyldecylammonium chloride, Benzyldimethyldodecylammonium chloride, Benzyldimethylhexadecylammonium chloride, Benzyldimethyltetradecylammonium chloride, Bifenox, Bifenthrin, Biphenyl, Bispyribac-sodium, Bitertanol, Boscalid, Bromophos-ethyl, Bromopropylate, Bromoxynil, Bromuconazol, Bupirimate, Buprofezin, Butachlor, Butocarboxim, Butocarboxim sulphoxide, Butoxycarboxim, Cadusafos, Captan, Carbaryl, Carbendazim, Carbetamide, Carbofuran, Carbofuran (3-hydroxy), Carboxin, Chlorantraniliprole, Chlorbufam, Chlordane (cis)/Chlordane (trans)/Chlordane (oxy) (20; sum of isomers), Chlorfenapyr, Chlorfenvinphos, Chloridazon, Chlorobenzilate, Chlorothalonil, Chlorpropham, Chlorpyrifos, Chlorpyrifos-methyl, Chlorthal-dimethyl, Chlortoluron, Chlozolinate, Chromafenozide, Clethodim, Clofentezine, Clomazone, Clothianidin, Coumaphos, Cyanazine, Cyazofamid, Cycloate, Cycloxydim, Cyflufenamid, Cyfluthrin, Cyhalothrin-lambda, Cymoxanil, Cypermethrin, Cyproconazole, Cyprodinil, Cyromazine, DDD-pp/DDE-pp/DDT-op/DDT-pp (50; sum of isomers), Deltamethrin, Demeton-S-methyl, Demeton-S-methyl sulphone, Demeton-S-methyl sulphoxide, Desmedipham, Diafenthiuron, Diazinon, Dichlobenil, Dichlofluanid, Dichlorprop, Dichlorvos, Diclobutrazol, Dicloran, Dicofol, Dicrotophos, Didecyldimethylammonium chloride, Dieldrin (10), Diethofencarb, Difenoconazole, Diflubenzuron, Diflufenican, Dimethenamid, Dimethoate, Dimethomorph, Dimoxystrobin, Diniconazole, Dinotefuran, Diphenylamine, Disulfoton, Disulfoton sulphone, Disulfoton sulphoxide, Diuron, Dmsa, Dmst, Dodine, Endosulfan (I)/Endosulfan (II)/Endosulfan-sulphate (10; sum of isomers), Endrin (10), Epn, Epoxiconazole, Eptc, Ethiofencarb, Ethiofencarb sulphone, Ethiofencarb sulphoxide, Ethion, Ethirimol, Ethofumesate, Ethoprophos, Etofenprox, Etoxazole, Etridiazole, Etrimfos, Famoxadone, Fenamidone, Fenamiphos, Fenamiphos sulphone, Fenamiphos sulphoxide, Fenarimol, Fenazaquin, Fenbuconazole, Fenbutatin oxide, Fenhexamid, Fenitrothion, Fenoxycarb, Fenpropathrin, Fenpropidin, Fenpropimorph, Fenpyroximate, Fensulfothion, Fensulfothion-oxon, Fensulfothion-oxon-sulfone, Fensulfothion- sulfone, Fenthion, Fenthion sulphone, Fenthion sulphoxide, Fenvalerate, Fipronil, Fipronil-sulfone, Flonicamid, Fluazifop (free acid), Fluazifop-P-butyl, Fluazinam, Flubendiamide, Flucythrinate, Fludioxonil, Flufenacet, Flufenoxuron, Fluometuron, Fluopicolide, Fluoxastrobin, Fluquinconazole, Flurochloridone, Fluroxypyr, Flusilazole, Flutolanil, Flutriafol, Fluvalinate, Fluxapyroxad, Folpet, Fonofos, Formetanate-hcl, Formothion, Fosthiazate, Furalaxyl, Furathiocarb, Furmecyclox, Halofenozide, Halosulfuron-methyl, Haloxyfop (free acid), HCH-alpha (20), HCH-beta (5), HCH- gamma (200), Heptachlor/Heptachlor epoxide (cis)Heptachlor epoxide (trans) (10; sum of isomers), Heptenophos, Hexachlorobenzene (10), Hexaconazole, Hexazinone, Hexythiazox, Imazalil, Imidacloprid, Indoxacarb, Ioxynil, Iprodione, Iprovalicarb, Isazofos, Isocarbofos, Isofenphos, Isofenphos-methyl, Isoprocarb, Isoprothiolane, Isoproturon, Isoxaben, Isoxaflutole, Kresoxim- methyl, Lenacil, Linuron, Lufenuron, Malaoxon, Malathion, Mandipropamid, Mecarbam, Mepanipyrim, Mephosfolan, Mepronil, Mesosulfuron-methyl, Metaflumizone, Metalaxyl, Metamitron, Metazachlor, Metconazole, Methabenzthiazuron, Methacrifos, Methamidophos, Methidathion, Methiocarb, Methiocarb sulfoxide, Methiocarb sulphone, Methomyl, Methoxychlor, Methoxyfenozide, Metobromuron, Metolachlor, Metolcarb, Metosulam, Metoxuron, Metrafenone, Metribuzin, Metsulfuron-methyl, Metaflumizone, Metalaxyl, Metamitron, Metazachlor, Metconazole, Methabenzthiazuron, Methacrifos, Methamidophos, Methidathion, Methiocarb, Methiocarb sulfoxide, Methiocarb sulphone, Methomyl, Methoxychlor, Methoxyfenozide, Metobromuron, Metolachlor, Metolcarb, Metosulam, Metoxuron, Metrafenone, Metribuzin, Metsulfuron-methyl, Mevinphos, Molinate, Monocrotophos, Monolinuron, Monuron, Myclobutanil, N-2,4-dimethylphenyl-N`-methylformamidine, Napropamide, Nitenpyram, Nitrofen, Nitrothal- isopropyl, Nuarimol, Ofurace, Omethoate, Oxadiazon, Oxadixyl, Oxamyl, Oxyfluorfen, Paclobutrazol, Paraoxon-methyl, Parathion-ethyl, Parathion-methyl, Penconazole, Pencycuron, Pendimethalin, Pentachloroanaline, Pentanochlor, Permethrin, Phenmedipham, Phenthoate, Phorate, Phorate sulphone, Phorate sulphoxide, Phosalone, Phosmet, Phosphamidon, Phoxim, Picolinafen, Picoxystrobin, Piperonyl butoxide, Pirimicarb, Pirimicarb-desmethyl, Pirimiphos-ethyl, Pirimiphos- methyl, Prochloraz, Procymidone, Profenofos, Promecarb, Prometryn, Propachlor, Propamocarb (free base), Propanil, Propaquizafop, Propargite, Propetamphos, Propham, Propiconazole, Propoxur, Propyzamide, Prosulfocarb, Prosulfuron, Prothioconazole-desthio, Prothiofos, Pymetrozine, Pyraclostrobin, Pyrazophos, Pyrethrins, Pyridaben, Pyridaphenthion, Pyrifenox, Pyrimethanil, Pyriproxyfen, Quassia, Quinalphos, Quinmerac, Quinomethionate, Quinoxyfen, Quintozene, Resmethrin, Rimsulfuron, Rotenone, Simazine, Spinosad, Spirodiclofen, Spiromesifen, Spiroxamine, Sulcotrione, Tebuconazole, Tebufenozide, Tebufenpyrad, Tebuthiuron, Tecnazene, Teflubenzuron, Tefluthrin, Tepraloxydim, Terbufos, Terbufos sulfone, Terbufos sulfoxide, Terbuthylazine, Terbutryn, Tetrachlorvinphos, Tetraconazole, Tetradifon, Tetramethrin, Thiabendazole, Thiacloprid, Thiamethoxam, Thiodicarb, Thiophanate-methyl, Tolclofos-methyl, Tolfenpyrad, Tolylfluanid, Triadimefon, Triadimenol, Triallate, Triasulfuron, Triazamate acid, Triazophos, Triclopyr, Tricyclazole, Trifloxystrobin, Triflumizole, Triflumuron, Trifluralin, Triforine, Triticonazole, Vinclozolin, Zoxamide.

7Li, 9Be, 11 B, 23 Na, 24 Mg, 27 Al, 31 P, 34 S, 39 K, 43 Ca, 45 Sc, 47 Ti, 51 V, 52 Cr, 55 Mn, 56 Fe, 59 Co, 60 Ni, 63 Cu, 66 Zn, 71 Ga, 72 Ge, 75 As (2), 78 Se, 85 Rb, 88 Sr, 89 Y, 90 Zr, 93 Nb, 95 Mo, 101 Ru, 103 Rh, 105 Pd, 107 Ag, 111 Cd (0.5), 118 Sn, 121 Sb, 125 Te, 133 Cs, 137 Ba, 139 La, 140 Ce, 141 Pr, 146 Nd, 147 Sm, 153 Eu, 157 Gd, 159 Tb, 163 Dy, 165 Ho, 166 Er, 169 Tm, 172 Yb, 175 Lu, 178 Hf, 181 Ta, 182 W, 185 Re, 193 Ir, 195 Pt, 197 Au, 201 Hg (0.1), 205 Tl, 208 Pb (5), 232 Th, 238 U.

PCB18, PCB28(a), PCB31, PCB47, PCB49, PCB51, PCB52(a), PCB99, PCB101(a), PCB105, PCB114, PCB118, PCB123, PCB128, PCB138(a), PCB153(a), PCB156, PCB157, PCB167, PCB180(a), PCB189, PCB77(b), PCB81(b), PCB126(b), PCB169(b), 2,3,7,8-TCDD(b), 1,2,3,7,8-PeCDD(b), 1,2,3,4,7,8-HxCDD(b), 1,2,3,6,7,8-HxCDD(b), 1,2,3,7,8,9-HxCDD(b), 1,2,3,4,6,7,8-HpCDD(b), OCDD(b), 2,3,7,8-TCDF(b), 1,2,3,7,8-PeCDF(b), 2,3,4,7,8-PeCDF(b), 1,2,3,4,7,8-HxCDF(b), 1,2,3,6,7,8-HxCDF(b), 1,2,3,7,8,9- HxCDF(b), 2,3,4,6,7,8-HxCDF(b), 1,2,3,4,6,7,8-HpCDF(b), 1,2,3,4,7,8,9-HpCDF(b), OCDF(b).

Acenaphthylene, Acenaphthene, Fluorene, Phenanthrene, Anthracene(c), Fluoranthene, Benzo[c]fluorine, Pyrene, Benzo[ghi]fluoranthene, Benz(a)anthracene, Benzo[b]naphtho[2,1- d]thiophene, Cyclopenta[c,d]pyrene, Chrysene (c), 5-methylchrysene, Benzo[b]fluoranthene(c), Benzo[j]fluoranthene, Benzo[k]fluoranthene, Benzo[e]pyrene, Benzo[a]pyrene(c), Indeno[1,2,3- cd]pyrene, Dibenz[ah]anthracene, Benzo-[g,h,i]perylene, Anthanthrene, Dibenzo[a,l]pyrene, Dibenzo[a,e]pyrene, Dibenzo[a,i]pyrene, Dibenzo[a,h]pyrene, Coronene.

Acetyl-Deoxynivalenol, Aflatoxin B1 (5), Aflatoxin B2, Aflatoxin G1, Aflatoxin G2, Aflatoxin M1, Aflatoxin M2, Altenuene, Alternariol, Alternariol Monomethyl Ether, Beauvericin, Citrinin, Cyclopiazonic Acid, Cytochalasin A, Cytochalasin B, Cytochalasin D, Cytochalasin E, Cytochalasin H, Deepoxy-Deoxynivalenol, Deoxynivalenol (900), Deoxynivalenol-3-Glucoside, Diacetoxyscirpenol, Emodin, Enniatin A, Enniatin A1, Enniatin B, Enniatin B1, Ergocornine, Ergocorninine, Ergocristine, Ergocristinine, Ergocryptine, Ergocryptinine, Ergometrine, Ergometrinine, Ergosine, Ergosinine, Ergotamine, Ergotaminine, Fumonisin B1/Fumonisin B2/Fumonisin B3 (1000; sum of fumonisims), Fusarenon X, Fusaric Acid, Gliotoxin, HT2 Toxin/T2 Toxin (250; sum of T toxins), Meleagrin, Moniliformin, Mycophenolic Acid, Neosolaniol, Nivalenol, Ochratoxin A (50), Patulin, Penicillic Acid, Penitrem A, Phomopsin A, Roquefortine C, Sterigmatocystin, Tentoxin, Wortmannin.

Table S8. Results of veterinary medicine MS/MS screen of Musca larvae samples. Units reported are µg/kg.

Musca Sample Identifier Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Compound Ciprofloxacin < 12.5 < 12.5 < 12.5 < 12.5 < 12.5 Danofloxacin < 25 < 25 < 25 < 25 < 25 Difloxacin < 75 < 75 < 75 < 75 < 75 Enrofloxacin < 12.5 < 12.5 < 12.5 < 12.5 < 12.5 Flumequine < 100 < 100 < 100 < 100 < 100 Marbofloxacin < 25 < 25 < 25 < 25 < 25 Nalidixic_Acid < 25 < 25 < 25 < 25 < 25 Norfloxacin < 25 < 25 < 25 < 25 < 25 Oxolinic_Acid < 25 < 25 < 25 < 25 < 25 Sarafloxacin < 15 < 15 < 15 < 15 < 15 Sulfaguanidine < 50 < 50 < 50 < 50 < 50 Sulfanilamide < 50 < 50 < 50 < 50 < 50 Sulfachlorpyridazine < 50 < 50 < 50 < 50 < 50 Sulfadiazine < 50 < 50 < 50 < 50 < 50 Sulfadimethoxine < 50 < 50 < 50 < 50 < 50 Sulfadoxine < 50 < 50 < 50 < 50 < 50 Sulfamerazine < 50 < 50 < 50 < 50 < 50 Sulfamethazine < 50 < 50 < 50 < 50 < 50 Sulfamethizole < 50 < 50 < 50 < 50 < 50 Sulfamethoxypyridazine < 50 < 50 < 50 < 50 < 50 Sulfamonomethoxine < 50 < 50 < 50 < 50 < 50 Sulfapyridine < 50 < 50 < 50 < 50 < 50 Sulfaquinoxaline < 50 < 50 < 50 < 50 < 50 Sulfathiazole < 50 < 50 < 50 < 50 < 50 Sulfisoxazole < 50 < 50 < 50 < 50 < 50 Sulfamoxole < 50 < 50 < 50 < 50 < 50 Trimethoprim < 25 < 25 < 25 < 25 < 25 Sulfamethoxazole < 50 < 50 < 50 < 50 < 50 Erythromycin < 100 < 100 < 100 < 100 < 100 Josamycin < 100 < 100 < 100 < 100 < 100 Lincomycin < 50 < 50 < 50 < 50 < 50 Spiramycin < 50 < 50 < 50 < 50 < 50 Tilmicosin < 25 < 25 < 25 < 25 < 25 Tylosin_A < 50 < 50 < 50 < 50 < 50 Gamithromycin < 50 < 50 < 50 < 50 < 50 Tildipirosin < 200 < 200 < 200 < 200 < 200 Tulathromycin < 750 < 750 < 750 < 750 < 750 Virginiamycin < 50 < 50 < 50 < 50 < 50 Pirlimycin < 50 < 50 < 50 < 50 < 50 Acetyltylosin-2-O < 12.5 < 12.5 < 12.5 < 12.5 < 12.5 Tylvalosin < 12.5 < 12.5 < 12.5 < 12.5 < 12.5 Valnemulin < 50 < 50 < 50 < 50 < 50 Rifampicin < 50 < 50 < 50 < 50 < 50 Dapsone < 10 < 10 < 10 < 10 < 10 Chlortetracycline < 25 < 25 < 25 < 25 < 25

Table S8 (continued).

Musca Sample Identifier Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Compound Epichlortetracycline < 25 < 25 < 25 < 25 < 25 Epitetracycline < 25 < 25 < 25 < 25 < 25 Oxytetracycline < 25 < 25 < 25 < 25 < 25 Epioxytetracycline < 25 < 25 < 25 < 25 < 25 Doxycycline < 50 < 50 < 50 < 50 < 50 Tetracycline < 25 < 25 < 25 < 25 < 25 Phenoxymethylpenicillin < 12.5 < 12.5 < 12.5 < 12.5 < 12.5 Benzylpenicillin < 12.5 < 12.5 < 12.5 < 12.5 < 12.5 Amoxicillin < 12.5 < 12.5 < 12.5 < 12.5 < 12.5 Ampicillin < 12.5 < 12.5 < 12.5 < 12.5 < 12.5 Dicloxacillin < 75 < 75 < 75 < 75 < 75 Cloxacillin < 150 < 150 < 150 < 150 < 150 Nafcillin < 75 < 75 < 75 < 75 < 75 Oxacillin < 75 < 75 < 75 < 75 < 75 Cefalexin < 100 < 100 < 100 < 100 < 100 Cefalonium < 100 < 100 < 100 < 100 < 100 Cefapirin < 25 < 25 < 25 < 25 < 25 Cefoperazone < 50 < 50 < 50 < 50 < 50 Desacetylcefapirin < 25 < 25 < 25 < 25 < 25 Cefazolin < 50 < 50 < 50 < 50 < 50 Cefquinome < 25 < 25 < 25 < 25 < 25 Ceftiofur < 10 < 10 < 10 < 10 < 10

Table S9. Results of veterinary medicine MS/MS screen of other larvae samples. Units reported are µg/kg.

Sample Identifier Calliphora , Calliphora , Calliphora , H.Illucens , Sample 1 Sample 2 Sample 3 Sample 1 Compound Ciprofloxacin < 12.5 < 12.5 < 12.5 < 12.5 Danofloxacin < 25 < 25 < 25 < 25 Difloxacin < 75 < 75 < 75 < 75 Enrofloxacin < 12.5 < 12.5 < 12.5 < 12.5 Flumequine < 100 < 100 < 100 < 100 Marbofloxacin < 25 < 25 < 25 < 25 Nalidixic_Acid < 25 < 25 < 25 < 25 Norfloxacin < 25 < 25 < 25 < 25 Oxolinic_Acid < 25 < 25 < 25 < 25 Sarafloxacin < 15 < 15 < 15 < 15 Sulfaguanidine < 50 < 50 < 50 < 50 Sulfanilamide < 50 < 50 < 50 < 50 Sulfachlorpyridazine < 50 < 50 < 50 < 50 Sulfadiazine < 50 < 50 < 50 < 50 Sulfadimethoxine < 50 < 50 < 50 < 50 Sulfadoxine < 50 < 50 < 50 < 50 Sulfamerazine < 50 < 50 < 50 < 50 Sulfamethazine < 50 < 50 < 50 < 50 Sulfamethizole < 50 < 50 < 50 < 50 Sulfamethoxypyridazine < 50 < 50 < 50 < 50 Sulfamonomethoxine < 50 < 50 < 50 < 50 Sulfapyridine < 50 < 50 < 50 < 50 Sulfaquinoxaline < 50 < 50 < 50 < 50 Sulfathiazole < 50 < 50 < 50 < 50 Sulfisoxazole < 50 < 50 < 50 < 50 Sulfamoxole < 50 < 50 < 50 < 50 Trimethoprim < 25 < 25 < 25 < 25 Sulfamethoxazole < 50 < 50 < 50 < 50 Erythromycin < 100 < 100 < 100 < 100 Josamycin < 100 < 100 < 100 < 100 Lincomycin < 50 < 50 < 50 < 50 Spiramycin < 50 < 50 < 50 < 50 Tilmicosin < 25 < 25 < 25 < 25 Tylosin_A < 50 < 50 < 50 < 50 Gamithromycin < 50 < 50 < 50 < 50 Tildipirosin < 200 < 200 < 200 < 200 Tulathromycin < 750 < 750 < 750 < 750 Virginiamycin < 50 < 50 < 50 < 50 Pirlimycin < 50 < 50 < 50 < 50 Acetyltylosin-2-O < 12.5 < 12.5 < 12.5 < 12.5 Tylvalosin < 12.5 < 12.5 < 12.5 < 12.5 Valnemulin < 50 < 50 < 50 < 50 Rifampicin < 50 < 50 < 50 < 50 Dapsone < 10 < 10 < 10 < 10 Chlortetracycline < 25 < 25 < 25 < 25

Table S9 (continued).

Sample Identifier Calliphora , Calliphora , Calliphora , H.Illucens ,, Sample 1 Sample 2 Sample 3 Sample 1 Compound Epichlortetracycline < 25 < 25 < 25 < 25 Epitetracycline < 25 < 25 < 25 < 25 Oxytetracycline < 25 < 25 < 25 < 25 Epioxytetracycline < 25 < 25 < 25 < 25 Doxycycline < 50 < 50 < 50 < 50 Tetracycline < 25 < 25 < 25 < 25 Phenoxymethylpenicillin < 12.5 < 12.5 < 12.5 < 12.5 Benzylpenicillin < 12.5 < 12.5 < 12.5 < 12.5 Amoxicillin < 12.5 < 12.5 < 12.5 < 12.5 Ampicillin < 12.5 < 12.5 < 12.5 < 12.5 Dicloxacillin < 75 < 75 < 75 < 75 Cloxacillin < 150 < 150 < 150 < 150 Nafcillin < 75 < 75 < 75 < 75 Oxacillin < 75 < 75 < 75 < 75 Cefalexin < 100 < 100 < 100 < 100 Cefalonium < 100 < 100 < 100 < 100 Cefapirin < 25 < 25 < 25 < 25 Cefoperazone < 50 < 50 < 50 < 50 Desacetylcefapirin < 25 < 25 < 25 < 25 Cefazolin < 50 < 50 < 50 < 50 Cefquinome < 25 < 25 < 25 < 25 Ceftiofur < 10 < 10 < 10 < 10

Table S10. Results of veterinary medicine qualitative ToF screen of Musca larvae samples. Contaminants reported as either suspect positive or absent, all LOD’s are 100 µg/kg or lower.

Musca Sample Identifier Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Compound 1 2-dichlorobenzene Absent Absent Absent Absent Absent 16ß-hydroxystanozolol Absent Absent Absent Absent Absent 17a-nortestosterone Absent Absent Absent Absent Absent 17a-trenbolone Absent Absent Absent Absent Absent 17ß-estradiol Absent Absent Absent Absent Absent 17ß-trenbolone Absent Absent Absent Absent Absent 2 4 6-triaminopyrimidine- Absent Absent Absent Absent Absent 5-carbonitrile 2 4-dimethylaniline Absent Absent Absent Absent Absent 2ß-hydroxy-N- Absent Absent Absent Absent Absent deethyltiamulin 2ß-hydroxytiamulin Absent Absent Absent Absent Absent 3-O-acetyltylosin Absent Absent Absent Absent Absent 4 4'-dinitrocarbanilide Present Absent Absent Absent Absent (Nicarbazin) ж 4-demethylgriseofulvin Absent Absent Absent Absent Absent 4-methylaminoantipyrine Absent Absent Absent Absent Absent 5-hydroxyflunixin Absent Absent Absent Absent Absent 5-hydroxythiabendazole Absent Absent Absent Absent Absent 6-demethylgriseofulvin Absent Absent Absent Absent Absent 8a-hydroxymutilin Absent Absent Absent Absent Absent 8a-hydroxy-N- Absent Absent Absent Absent Absent deethyltiamulin 8a-hydroxytiamulin Absent Absent Absent Absent Absent Abamectin B1a Absent Absent Absent Absent Absent Acepromazine Absent Absent Absent Absent Absent Acetylisovaleryltylosin Absent Absent Absent Absent Absent Acyclovir Absent Absent Absent Absent Absent AHD Absent Absent Absent Absent Absent Aklomide Absent Absent Absent Absent Absent Albendazole Absent Absent Absent Absent Absent Albendazole 2- Absent Absent Absent Absent Absent aminosulfone Albendazole sulfone Absent Absent Absent Absent Absent Albendazole sulfoxide Absent Absent Absent Absent Absent Allopurinol Absent Absent Absent Absent Absent Altrenogest Absent Absent Absent Absent Absent Ambroxol Absent Absent Absent Absent Absent Amdinocillin Absent Absent Absent Absent Absent Amethocaine Absent Absent Absent Absent Absent Amikacin Absent Absent Absent Absent Absent Aminitrozole Absent Absent Absent Absent Absent Amiodarone Absent Absent Absent Absent Absent Amitraz Absent Absent Absent Absent Absent ж Maximum allowed content of 500 µg/kg stipulated in 209/8/EC (Annex 1 to 2002/32/EC).

Table S10 (continued).

Musca Sample Identifier Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Compound AMOZ Absent Absent Absent Absent Absent Ampicillin Absent Absent Absent Absent Absent Amprolium Absent Absent Absent Absent Absent AOZ Absent Absent Absent Absent Absent Apramycin Absent Absent Absent Absent Absent Aristolochic acid Absent Absent Absent Absent Absent Arsanilic acid Absent Absent Absent Absent Absent Aspoxicillin Absent Absent Absent Absent Absent Atipamezole Absent Absent Absent Absent Absent Atracurium Absent Absent Absent Absent Absent Atropine Absent Absent Absent Absent Absent Avilamycin A Absent Absent Absent Absent Absent Azamethiphos Absent Absent Absent Absent Absent Azaperol Absent Absent Absent Absent Absent Azaperone Absent Absent Absent Absent Absent Azithromycin Absent Absent Absent Absent Absent Bacitracin A Absent Absent Absent Absent Absent Baquiloprim Absent Absent Absent Absent Absent Beclomethasone Absent Absent Absent Absent Absent Benzocaine Absent Absent Absent Absent Absent Benzylpenicillin Absent Absent Absent Absent Absent Betamethasone Absent Absent Absent Absent Absent Bethanechol Absent Absent Absent Absent Absent Bicozamycin Absent Absent Absent Absent Absent Bismuth subsalicylate Absent Absent Absent Absent Absent Bithionol Absent Absent Absent Absent Absent Bithionol sulfoxide Absent Absent Absent Absent Absent Boldenone Absent Absent Absent Absent Absent Brombuterol Absent Absent Absent Absent Absent Brotizolam Absent Absent Absent Absent Absent Budesonide Absent Absent Absent Absent Absent Bupivacaine Absent Absent Absent Absent Absent Buprenorphine Absent Absent Absent Absent Absent Buquinolate Absent Absent Absent Absent Absent Butorphanol Absent Absent Absent Absent Absent Carazolol Absent Absent Absent Absent Absent Carbadox Absent Absent Absent Absent Absent Carbamazepine Absent Absent Absent Absent Absent Carprofen Absent Absent Absent Absent Absent Cefazolin Absent Absent Absent Absent Absent Cefoperazone Absent Absent Absent Absent Absent Cefquinome Absent Absent Absent Absent Absent Ceftiofur Absent Absent Absent Absent Absent Cefuroxime Absent Absent Absent Absent Absent Cephacetrile Absent Absent Absent Absent Absent

Table S10 (continued).

Musca Sample Identifier Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Compound Cephalexin Absent Absent Absent Absent Absent Cephalonium Absent Absent Absent Absent Absent Cephapirin Absent Absent Absent Absent Absent Cetrimide Absent Absent Absent Absent Absent Chloramphenicol Absent Absent Absent Absent Absent Chloramphenicol Absent Absent Absent Absent Absent glucuronide Chlorbrombuterol Absent Absent Absent Absent Absent Chlorhexidine Absent Absent Absent Absent Absent Chlormadinone Absent Absent Absent Absent Absent Chlormadinone acetate Absent Absent Absent Absent Absent Chlorobutanol Absent Absent Absent Absent Absent Chlorotestosterone Absent Absent Absent Absent Absent Chlorpromazine Absent Absent Absent Absent Absent Chlortetracycline Absent Absent Absent Absent Absent Cimaterol Absent Absent Absent Absent Absent Cimbuterol Absent Absent Absent Absent Absent Ciprofloxacin Absent Absent Absent Absent Absent Cisapride Absent Absent Absent Absent Absent Clavulanic acid Absent Absent Absent Absent Absent Clenbuterol Absent Absent Absent Absent Absent Clencyclohexerol Absent Absent Absent Absent Absent Clenpenterol Absent Absent Absent Absent Absent Clenproperol Absent Absent Absent Absent Absent Clopidol Absent Absent Absent Absent Absent Clorsulon Absent Absent Absent Absent Absent Closantel Absent Absent Absent Absent Absent Cloxacillin Absent Absent Absent Absent Absent Codeine Absent Absent Absent Absent Absent Colchicine Absent Absent Absent Absent Absent Colistin Absent Absent Absent Absent Absent Coumaphos Absent Absent Absent Absent Absent Cyclosporin A Absent Absent Absent Absent Absent Cyfluthrin Absent Absent Absent Absent Absent Cyhalothrin Absent Absent Absent Absent Absent Cypermethrin Absent Absent Absent Absent Absent Cyproheptadine Absent Absent Absent Absent Absent Cyromazine Absent Absent Absent Absent Absent Danofloxacin Absent Absent Absent Absent Absent Dantrolene Absent Absent Absent Absent Absent Dapsone Absent Absent Absent Absent Absent Decoquinate † Absent Absent Absent Absent Absent Deltamethrin Absent Absent Absent Absent Absent Derquantel Absent Absent Absent Absent Absent Desacetylcephapirin Absent Absent Absent Absent Absent † Maximum allowed content of 400 µg/kg stipulated in 2009/8/EC.

Table S10 (continued).

Musca Sample Identifier Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Compound Desethylene ciprofloxacin Absent Absent Absent Absent Absent Desfuroylceftiofur Absent Absent Absent Absent Absent Destomycin A Absent Absent Absent Absent Absent Detomidine Absent Absent Absent Absent Absent Dexamethasone Absent Absent Absent Absent Absent Diaveridine Absent Absent Absent Absent Absent Diazepam Absent Absent Absent Absent Absent Diazinon Absent Absent Absent Absent Absent Dichloroisoeverninic acid Absent Absent Absent Absent Absent Dichlorvos Absent Absent Absent Absent Absent Diclazuril ‡ Absent Absent Absent Absent Absent Diclofenac Absent Absent Absent Absent Absent Dicloxacillin Absent Absent Absent Absent Absent Dicyclanil Absent Absent Absent Absent Absent Dienestrol Absent Absent Absent Absent Absent Diethylstilbestrol Absent Absent Absent Absent Absent Difloxacin Absent Absent Absent Absent Absent Diflubenzuron Absent Absent Absent Absent Absent Digoxigenin Absent Absent Absent Absent Absent Digoxin Absent Absent Absent Absent Absent Dihydrostreptomycin Absent Absent Absent Absent Absent Dimetridazole Absent Absent Absent Absent Absent Diminazene Absent Absent Absent Absent Absent Dinitolmide Absent Absent Absent Absent Absent Dioctyl sulfosuccininc acid Absent Absent Absent Absent Absent Dobutamine Absent Absent Absent Absent Absent Domperidone Absent Absent Absent Absent Absent Dopamine Absent Absent Absent Absent Absent Doramectin Absent Absent Absent Absent Absent Dorzolamide Absent Absent Absent Absent Absent Doxycycline Absent Absent Absent Absent Absent Edrophonium Absent Absent Absent Absent Absent Efrotomycin A1 Absent Absent Absent Absent Absent Efrotomycin A2 Absent Absent Absent Absent Absent Efrotomycin B Absent Absent Absent Absent Absent Emamectin B1a Absent Absent Absent Absent Absent Enduracidin A Absent Absent Absent Absent Absent Enduracidin B Absent Absent Absent Absent Absent Enduracidin SA Absent Absent Absent Absent Absent Enflurane Absent Absent Absent Absent Absent Enrofloxacin Absent Absent Absent Absent Absent Epichlortetracycline Absent Absent Absent Absent Absent Epinephrine Absent Absent Absent Absent Absent Epioxytetracycline Absent Absent Absent Absent Absent ‡ Maximum allowed content of 10 µg/kg stipulated in 2009/8/EC.

Table S10 (continued).

Musca Sample Identifier Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Compound Epitetracycline Absent Absent Absent Absent Absent Eprinomectin B1a Absent Absent Absent Absent Absent Erythromycin Absent Absent Absent Absent Absent Ethopabate Absent Absent Absent Absent Absent Ethynylestradiol Absent Absent Absent Absent Absent Etiproston Absent Absent Absent Absent Absent Famphur Absent Absent Absent Absent Absent Febantel Absent Absent Absent Absent Absent Fenbendazole Absent Absent Absent Absent Absent Fenoterol Absent Absent Absent Absent Absent Fenprostalene Absent Absent Absent Absent Absent Fentanyl Absent Absent Absent Absent Absent Fenthion Absent Absent Absent Absent Absent Fenvalerate Absent Absent Absent Absent Absent Firocoxib Absent Absent Absent Absent Absent Flambic acid Absent Absent Absent Absent Absent Florfenicol Absent Absent Absent Absent Absent Florfenicol alcohol Absent Absent Absent Absent Absent Florfenicol amine Absent Absent Absent Absent Absent Florfenicol oxamic acid Absent Absent Absent Absent Absent Fluazuron Absent Absent Absent Absent Absent Flubendazole Absent Absent Absent Absent Absent Flubendazole amine Absent Absent Absent Absent Absent Flumazenil Absent Absent Absent Absent Absent Flumequine Absent Absent Absent Absent Absent Flumethasone Absent Absent Absent Absent Absent Flumethrin Absent Absent Absent Absent Absent Flunixin Absent Absent Absent Absent Absent Flunixin Absent Absent Absent Absent Absent Fluorescein Absent Absent Absent Absent Absent Flurogestone Absent Absent Absent Absent Absent Flurogestone acetate Absent Absent Absent Absent Absent Fluticasone Absent Absent Absent Absent Absent Fosfomycin Absent Absent Absent Absent Absent Furaltadone Absent Absent Absent Absent Absent Furazolidone Absent Absent Absent Absent Absent Gabapentin Absent Absent Absent Absent Absent Gamithromycin Absent Absent Absent Absent Absent Gentamicin C1 Absent Absent Absent Absent Absent Gentamicin C1a Absent Absent Absent Absent Absent Gentamicin C2 Absent Absent Absent Absent Absent Gentamicin C2b Absent Absent Absent Absent Absent Glycarbylamide Absent Absent Absent Absent Absent Glycopyrrolate Absent Absent Absent Absent Absent

Table S10 (continued).

Musca Sample Identifier Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Compound Glycyrrhizic acid Absent Absent Absent Absent Absent Griseofulvin Absent Absent Absent Absent Absent Guaifenesin Absent Absent Absent Absent Absent Halofuginone § Absent Absent Absent Absent Absent Haloperidol Absent Absent Absent Absent Absent Halothane Absent Absent Absent Absent Absent Haloxon Absent Absent Absent Absent Absent Hexestrol Absent Absent Absent Absent Absent Hydrocortisone Absent Absent Absent Absent Absent Hydroxyclenbuterol Absent Absent Absent Absent Absent Hydroxydimetridazole Absent Absent Absent Absent Absent Hydroxymetronidazole Absent Absent Absent Absent Absent Hygromycin B Absent Absent Absent Absent Absent Ibuprofen Absent Absent Absent Absent Absent Idoxuridine Absent Absent Absent Absent Absent Imidocarb Absent Absent Absent Absent Absent Imipramine Absent Absent Absent Absent Absent Iohexol Absent Absent Absent Absent Absent Iopamidol Absent Absent Absent Absent Absent Ipratropium Absent Absent Absent Absent Absent Isoeugenol Absent Absent Absent Absent Absent Isoflurane Absent Absent Absent Absent Absent Isometamidium Absent Absent Absent Absent Absent Isoxsuprine Absent Absent Absent Absent Absent Itraconazole Absent Absent Absent Absent Absent Ivermectin B1a Absent Absent Absent Absent Absent Josamycin Absent Absent Absent Absent Absent Kanamycin A Absent Absent Absent Absent Absent Ketamine Absent Absent Absent Absent Absent Ketoconazole Absent Absent Absent Absent Absent Ketoprofen Absent Absent Absent Absent Absent Ketorolac Absent Absent Absent Absent Absent Ketotriclabendazole Absent Absent Absent Absent Absent Laidlomycin Absent Absent Absent Absent Absent Lasalocid ¥ Absent Absent Absent Absent Absent Latanoprost Absent Absent Absent Absent Absent Leucomalachite green Absent Absent Absent Absent Absent Leucomycin A1 Absent Absent Absent Absent Absent Levamisole Absent Absent Absent Absent Absent Lidocaine Absent Absent Absent Absent Absent Lincomycin Absent Absent Absent Absent Absent Loperamide Absent Absent Absent Absent Absent Mabuterol Absent Absent Absent Absent Absent Maduramicin ψ Absent Absent Absent Absent Absent § Maximum allowed content of 30 µg/kg stipulated in 2009/8/EC, ¥ Maximum allowed content of 1250 µg/kg stipulated in 2009/8/EC, ψ Maximum allowed content of 50 µg/kg stipulated in 2009/8/EC.

Table S10 (continued).

Musca Sample Identifier Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Compound Malachite green Absent Absent Absent Absent Absent Malathion Absent Absent Absent Absent Absent Mapenterol Absent Absent Absent Absent Absent Marbofloxacin Absent Absent Absent Absent Absent Mebendazole Absent Absent Absent Absent Absent Mebendazole amine Absent Absent Absent Absent Absent Mebolazine Absent Absent Absent Absent Absent Medroxyprogesterone Absent Absent Absent Absent Absent Medroxyprogesterone Absent Absent Absent Absent Absent acetate Mefanamic acid Absent Absent Absent Absent Absent Megestrol Absent Absent Absent Absent Absent Megestrol acetate Absent Absent Absent Absent Absent Melengestrol Absent Absent Absent Absent Absent Melengestrol acetate Absent Absent Absent Absent Absent Meloxicam Absent Absent Absent Absent Absent Menbutone Absent Absent Absent Absent Absent Metamizole Absent Absent Absent Absent Absent Methimazole Absent Absent Absent Absent Absent Methoprene Absent Absent Absent Absent Absent Methyl (5-(1-hydroxy-1- Absent Absent Absent Absent Absent phenyl)methyl-1H- benzimidazol-2- yl)carbamate Methylparaben Absent Absent Absent Absent Absent Methylprednisolone Absent Absent Absent Absent Absent Methylquinoxalinecarboxylic Absent Absent Absent Absent Absent acid Methyltestosterone Absent Absent Absent Absent Absent Methylthiouracil Absent Absent Absent Absent Absent Metoclopramide Absent Absent Absent Absent Absent Metoserpate Absent Absent Absent Absent Absent Metronidazole Absent Absent Absent Absent Absent Miconazole Absent Absent Absent Absent Absent Midazolam Absent Absent Absent Absent Absent Miloxacin Absent Absent Absent Absent Absent Mirosamicin Absent Absent Absent Absent Absent Moenomycin A Absent Absent Absent Absent Absent Moenomycin A12 Absent Absent Absent Absent Absent Moenomycin C1 Absent Absent Absent Absent Absent Moenomycin C3 Absent Absent Absent Absent Absent Moenomycin C4 Absent Absent Absent Absent Absent Monensin Φ Absent Absent Absent Absent Absent Monepantel Absent Absent Absent Absent Absent Monepantel sulfone Absent Absent Absent Absent Absent Monochloroflorfenicol Absent Absent Absent Absent Absent Morantel Absent Absent Absent Absent Absent Φ Maximum allowed content of 1250 µg/kg stipulated in 2009/8/EC.

Table S10 (continued).

Musca Sample Identifier Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Compound Morphine Absent Absent Absent Absent Absent Moxidectin Absent Absent Absent Absent Absent Nafcillin Absent Absent Absent Absent Absent Naftalofos Absent Absent Absent Absent Absent Nalidixic acid Absent Absent Absent Absent Absent Naloxone Absent Absent Absent Absent Absent Nanafrocin Absent Absent Absent Absent Absent Nandrolone Absent Absent Absent Absent Absent Nandrolone phenpropionate Absent Absent Absent Absent Absent Naproxen Absent Absent Absent Absent Absent Narasin $ Absent Absent Absent Absent Absent N-deethyltiamulin Absent Absent Absent Absent Absent Neomycin B Absent Absent Absent Absent Absent Neospiramycin I Absent Absent Absent Absent Absent Neostigmine Absent Absent Absent Absent Absent Nequinate Absent Absent Absent Absent Absent Netobimin Absent Absent Absent Absent Absent Niclosamide Absent Absent Absent Absent Absent Nifurstyrenic acid Absent Absent Absent Absent Absent Nitarsone Absent Absent Absent Absent Absent Nitrofurantoin Absent Absent Absent Absent Absent Nitrofurazone Absent Absent Absent Absent Absent Nitromide Absent Absent Absent Absent Absent Nitroxynil Absent Absent Absent Absent Absent N-methyl-1 3- Absent Absent Absent Absent Absent propanediamine Noradrenalin Absent Absent Absent Absent Absent Norgestomet Absent Absent Absent Absent Absent Nosiheptide Absent Absent Absent Absent Absent Novobiocin Absent Absent Absent Absent Absent Nystatin A1 Absent Absent Absent Absent Absent Nystatin A1 Absent Absent Absent Absent Absent Nystatin A3 Absent Absent Absent Absent Absent Nystatin A3 Absent Absent Absent Absent Absent Ofloxacin Absent Absent Absent Absent Absent Olaquindox Absent Absent Absent Absent Absent Oleandomycin Absent Absent Absent Absent Absent Omeprazole Absent Absent Absent Absent Absent Orbifloxacin Absent Absent Absent Absent Absent Orciprenaline Absent Absent Absent Absent Absent Ormetoprim Absent Absent Absent Absent Absent Oxacillin Absent Absent Absent Absent Absent Oxfendazole Absent Absent Absent Absent Absent $ Maximum allowed content of 700 µg/kg stipulated in 2009/8/EC.

Table S10 (continued).

Musca Sample Identifier Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Compound Oxfendazole sulfone Absent Absent Absent Absent Absent Oxibendazole Absent Absent Absent Absent Absent Oxolinic acid Absent Absent Absent Absent Absent Oxybuprocaine Absent Absent Absent Absent Absent Oxyclozanide Absent Absent Absent Absent Absent Oxymetazoline Absent Absent Absent Absent Absent Oxyphenbutazone Absent Absent Absent Absent Absent Oxytetracycline Absent Absent Absent Absent Absent Oxytocin Absent Absent Absent Absent Absent Parbendazole Absent Absent Absent Absent Absent Paromomycin Absent Absent Absent Absent Absent Penicillin V Absent Absent Absent Absent Absent Pentoxifylline Absent Absent Absent Absent Absent Permethrin Absent Absent Absent Absent Absent Pethidine Absent Absent Absent Absent Absent Phenoxybenzamine Absent Absent Absent Absent Absent Phenylbutazone Absent Absent Absent Absent Absent Phenylephrine Absent Absent Absent Absent Absent Phenytoin Absent Absent Absent Absent Absent Phosmet Absent Absent Absent Absent Absent Phoxim Absent Absent Absent Absent Absent Piperazine Absent Absent Absent Absent Absent Piperonyl butoxide Absent Absent Absent Absent Absent Pirlimycin Absent Absent Absent Absent Absent Polymyxin B1 Absent Absent Absent Absent Absent Ponazuril Absent Absent Absent Absent Absent Praziquantel Absent Absent Absent Absent Absent Prednisolone Absent Absent Absent Absent Absent Prifinium Absent Absent Absent Absent Absent Prilocaine Absent Absent Absent Absent Absent Primidone Absent Absent Absent Absent Absent Procainamide Absent Absent Absent Absent Absent Progesterone Absent Absent Absent Absent Absent Propanolol Absent Absent Absent Absent Absent Propantheline Absent Absent Absent Absent Absent Propetamphos Absent Absent Absent Absent Absent Propionylpromazine Absent Absent Absent Absent Absent Propofol Absent Absent Absent Absent Absent Propylparaben Absent Absent Absent Absent Absent Propylthiouracil Absent Absent Absent Absent Absent Proxymetacaine Absent Absent Absent Absent Absent Pseudoephedrine Absent Absent Absent Absent Absent Pyraclofos Absent Absent Absent Absent Absent Pyrantel Absent Absent Absent Absent Absent

Table S10 (continued).

Musca Sample Identifier Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Compound Pyrimethamine Absent Absent Absent Absent Absent Quinidine Absent Absent Absent Absent Absent Quinoxalinecarboxylic acid Absent Absent Absent Absent Absent Ractopamine Absent Absent Absent Absent Absent Rafoxanide Absent Absent Absent Absent Absent Ranitidine Absent Absent Absent Absent Absent Rifampin Absent Absent Absent Absent Absent Rifaximin Absent Absent Absent Absent Absent Ritodrine Absent Absent Absent Absent Absent Robenidine # Absent Absent Absent Absent Absent Romifidine Absent Absent Absent Absent Absent Ronidazole Absent Absent Absent Absent Absent Rose Bengal Absent Absent Absent Absent Absent Roxarsone Absent Absent Absent Absent Absent Salbutamol Absent Absent Absent Absent Absent Salinomycin ♣ Absent Absent Absent Absent Absent Salmeterol Absent Absent Absent Absent Absent Sarafloxacin Absent Absent Absent Absent Absent Sarmazenil Absent Absent Absent Absent Absent Sedecamycin Absent Absent Absent Absent Absent Semduramicin ♦ Absent Absent Absent Absent Absent Semicarbazide Absent Absent Absent Absent Absent Sevoflurane Absent Absent Absent Absent Absent Spectinomycin Absent Absent Absent Absent Absent Spiramycin I Absent Absent Absent Absent Absent Stanozolol Absent Absent Absent Absent Absent Streptomycin Absent Absent Absent Absent Absent Sucralfate Absent Absent Absent Absent Absent Sulfabenzamide Absent Absent Absent Absent Absent Sulfabromomethazine Absent Absent Absent Absent Absent Sulfacetamide Absent Absent Absent Absent Absent Sulfachloropyrazine Absent Absent Absent Absent Absent Sulfachlorpyridazine Absent Absent Absent Absent Absent Sulfadiazine Absent Absent Absent Absent Absent Sulfadimethoxine Absent Absent Absent Absent Absent Sulfadoxine Absent Absent Absent Absent Absent Sulfaethoxypyridazine Absent Absent Absent Absent Absent Sulfaguanidine Absent Absent Absent Absent Absent Sulfamerazine Absent Absent Absent Absent Absent Sulfamethazine Absent Absent Absent Absent Absent Sulfamethizole Absent Absent Absent Absent Absent Sulfamethoxazole Absent Absent Absent Absent Absent # Maximum allowed content of 700 µg/kg stipulated in 2009/8/EC, ♣ Maximum allowed content of 700 µg/kg stipulated in 2009/8/EC, ♦ Maximum allowed content of 250 µg/kg stipulated in 2009/8/EC

Table S10 (continued).

Musca Sample Identifier Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Compound Sulfamethoxypyridazine Absent Absent Absent Absent Absent Sulfamonomethoxine Absent Absent Absent Absent Absent Sulfamoxole Absent Absent Absent Absent Absent Sulfamoyldapsone Absent Absent Absent Absent Absent Sulfanilamide Absent Absent Absent Absent Absent Sulfanitran Absent Absent Absent Absent Absent Sulfapyridine Absent Absent Absent Absent Absent Sulfaquinoxaline Absent Absent Absent Absent Absent Sulfathiazole Absent Absent Absent Absent Absent Sulfatroxazole Absent Absent Absent Absent Absent Sulfisoxazole Absent Absent Absent Absent Absent Sulfisozole Absent Absent Absent Absent Absent Sulfomyxin Absent Absent Absent Absent Absent Taleranol Absent Absent Absent Absent Absent Teflubenzuron Absent Absent Absent Absent Absent Temephos Absent Absent Absent Absent Absent Terbutaline Absent Absent Absent Absent Absent Terdecamycin Absent Absent Absent Absent Absent Terpin Absent Absent Absent Absent Absent Testosterone Absent Absent Absent Absent Absent Tetrachlorfenvinphos Absent Absent Absent Absent Absent Tetracycline Absent Absent Absent Absent Absent Theobromine Absent Absent Absent Absent Absent Thiabendazole Absent Absent Absent Absent Absent Thiamphenicol Absent Absent Absent Absent Absent Thiouracil Absent Absent Absent Absent Absent Tiamulin Absent Absent Absent Absent Absent Ticarcillin Absent Absent Absent Absent Absent Tildipirosin Absent Absent Absent Absent Absent Tiletamine Absent Absent Absent Absent Absent Tilmicosin Absent Absent Absent Absent Absent Timolol Absent Absent Absent Absent Absent Tiopronin Absent Absent Absent Absent Absent Tolfenamic acid Absent Absent Absent Absent Absent Toltrazuril Absent Absent Absent Absent Absent Toltrazuril sulfone Absent Absent Absent Absent Absent Triamcinolone acetonide Absent Absent Absent Absent Absent Tribromsalan Absent Absent Absent Absent Absent Trichlorfon Absent Absent Absent Absent Absent Triclabendazole Absent Absent Absent Absent Absent Triclabendazole sulfone Absent Absent Absent Absent Absent Triclabendazole sulfoxide Absent Absent Absent Absent Absent Triflumuron Absent Absent Absent Absent Absent Trimethoprim Absent Absent Absent Absent Absent Tripelennamine Absent Absent Absent Absent Absent

Table S10 (continued).

Musca Sample Identifier Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Compound Tropicamide Absent Absent Absent Absent Absent Tulathromycin Absent Absent Absent Absent Absent Tulobuterol Absent Absent Absent Absent Absent Tylosin A Absent Absent Absent Absent Absent Valnemulin Absent Absent Absent Absent Absent Vasopressin Absent Absent Absent Absent Absent Vedaprofen Absent Absent Absent Absent Absent Virginiamycin M1 Absent Absent Absent Absent Absent Virginiamycin S1 Absent Absent Absent Absent Absent Vitamin E Absent Absent Absent Absent Absent Xylazine Absent Absent Absent Absent Absent Zearalanone Absent Absent Absent Absent Absent Zeranol Absent Absent Absent Absent Absent Zilpaterol Absent Absent Absent Absent Absent Zolazepam Absent Absent Absent Absent Absent

Table S11. Results of veterinary medicine qualitative ToF screen of other larvae samples. Contaminants reported as either suspect positive or absent, all LOD’s are 100 µg/kg or lower.

Sample Identifier Calliphora , Calliphora , Calliphora , H.Illucens , Sample 1 Sample 2 Sample 3 Sample 1 Compound Absence of all compounds as described above in Table S10.

Table S11. Results of pesticide screen of Musca larvae samples. Units reported are µg/kg.

Musca Sample Identifier Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Compound 2,4-D < 10 < 10 < 10 < 10 < 10 2-Phenylphenol < 10 < 10 < 10 < 10 < 10 Abamectin < 10 < 10 < 10 < 10 < 10 Acephate < 10 < 10 < 10 < 10 < 10 Acetamiprid < 10 < 10 < 10 < 10 < 10 Acetochlor < 20 < 20 < 20 < 20 < 20 Acibenzolar-S-methyl < 20 < 20 < 20 < 20 < 20 Aclonifen < 20 < 20 < 20 < 20 < 20 Acrinathrin < 20 < 20 < 20 < 20 < 20 Alachlor < 10 < 10 < 10 < 10 < 10 Aldicarb < 10 < 10 < 10 < 10 < 10 Aldicarb sulphone < 10 < 10 < 10 < 10 < 10 Aldicarb sulphoxide < 10 < 10 < 10 < 10 < 10 Aldrin † < 10 < 10 < 10 < 10 < 10 Allethrin < 10 < 10 < 10 < 10 < 10 Amidosulfuron < 10 < 10 < 10 < 10 < 10 Asulam < 20 < 20 < 20 < 20 < 20 Atrazine < 10 < 10 < 10 < 10 < 10 Azinphos-ethyl < 20 < 20 < 20 < 20 < 20 Azinphos-methyl < 20 < 20 < 20 < 20 < 20 Azoxystrobin < 10 < 10 < 10 < 10 < 10 Benalaxyl < 10 < 10 < 10 < 10 < 10 Bendiocarb < 10 < 10 < 10 < 10 < 10 Benthiavalicarb-isopropyl < 10 < 10 < 10 < 10 < 10 Benzyldimethyldecylammonium < 50 < 50 < 50 < 50 < 50 chloride Benzyldimethyldodecylammonium < 50 < 50 < 50 < 50 < 50 chloride Benzyldimethylhexadecylammonium < 50 < 50 < 50 < 50 < 50 chloride Benzyldimethyltetradecylammonium < 50 < 50 < 50 < 50 < 50 chloride Bifenox < 20 < 20 < 20 < 20 < 20 Bifenthrin < 10 < 10 < 10 < 10 < 10 Biphenyl < 10 < 10 < 10 < 10 < 10 Bispyribac-sodium < 10 < 10 < 10 < 10 < 10 Bitertanol < 10 < 10 < 10 < 10 < 10 Boscalid < 10 < 10 < 10 < 10 < 10 Bromophos-ethyl < 10 < 10 < 10 < 10 < 10 Bromopropylate < 10 < 10 < 10 < 10 < 10 Bromoxynil < 10 < 10 < 10 < 10 < 10 Bromuconazol < 10 < 10 < 10 < 10 < 10 Bupirimate < 10 < 10 < 10 < 10 < 10 † Maximum allowed content of 10 µg/kg stipulated in 2002/32/EC.

Table S11 (continued).

Musca Sample Identifier Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Compound Buprofezin < 10 < 10 < 10 < 10 < 10 Butachlor < 10 < 10 < 10 < 10 < 10 Butocarboxim < 10 < 10 < 10 < 10 < 10 Butocarboxim sulphoxide < 10 < 10 < 10 < 10 < 10 Butoxycarboxim < 10 < 10 < 10 < 10 < 10 Cadusafos < 10 < 10 < 10 < 10 < 10 Captan < 20 < 20 < 20 < 20 < 20 Carbaryl < 10 < 10 < 10 < 10 < 10 Carbendazim < 10 < 10 < 10 < 10 < 10 Carbetamide < 20 < 20 < 20 < 20 < 20 Carbofuran < 10 < 10 < 10 < 10 < 10 Carbofuran (3-hydroxy) < 10 < 10 < 10 < 10 < 10 Carboxin < 20 < 20 < 20 < 20 < 20 Chlorantraniliprole < 10 < 10 < 10 < 10 < 10 Chlorbufam < 20 < 20 < 20 < 20 < 20 Chlordane (cis) ‡ < 10 < 10 < 10 < 10 < 10 Chlordane (trans) ‡ < 10 < 10 < 10 < 10 < 10 Chlordane (oxy) ‡ < 10 < 10 < 10 < 10 < 10 Chlorfenapyr < 20 < 20 < 20 < 20 < 20 Chlorfenvinphos < 10 < 10 < 10 < 10 < 10 Chloridazon < 10 < 10 < 10 < 10 < 10 Chlorobenzilate < 10 < 10 < 10 < 10 < 10 Chlorothalonil < 10 < 10 < 10 < 10 < 10 Chlorpropham < 20 < 20 < 20 < 20 < 20 Chlorpyrifos < 10 < 10 < 10 < 10 800 Chlorpyrifos-methyl < 10 < 10 < 10 < 10 < 10 Chlorthal-dimethyl < 10 < 10 < 10 < 10 < 10 Chlortoluron < 10 < 10 < 10 < 10 < 10 Chlozolinate < 10 < 10 < 10 < 10 < 10 Chromafenozide < 10 < 10 < 10 < 10 < 10 Clethodim < 20 < 20 < 20 < 20 < 20 Clofentezine < 10 < 10 < 10 < 10 < 10 Clomazone < 10 < 10 < 10 < 10 < 10 Clothianidin < 10 < 10 < 10 < 10 < 10 Coumaphos < 10 < 10 < 10 < 10 < 10 Cyanazine < 10 < 10 < 10 < 10 < 10 Cyazofamid < 10 < 10 < 10 < 10 < 10 Cycloate < 10 < 10 < 10 < 10 < 10 Cycloxydim < 20 < 20 < 20 < 20 < 20 Cyflufenamid < 10 < 10 < 10 < 10 < 10 Cyfluthrin < 20 < 20 < 20 < 20 < 20 Cyhalothrin-lambda < 20 < 20 < 20 < 20 < 20 Cymoxanil < 10 < 10 < 10 < 10 < 10 Cypermethrin < 20 < 20 < 20 < 20 < 20 Cyproconazole < 10 < 10 < 10 < 10 < 10 ‡ Maximum allowed content 20 µg/kg of sum of chlordane isomers stipulated in 2002/32/EC.

Table S11 (continued).

Musca Sample Identifier Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Compound Cyprodinil < 20 < 20 < 20 < 20 < 20 Cyromazine < 20 < 20 < 20 < 20 < 20 DDD-pp ψ < 10 < 10 < 10 < 10 < 10 DDE-pp ψ < 10 < 10 < 10 < 10 < 10 DDT-op ψ < 10 < 10 < 10 < 10 < 10 DDT-pp ψ < 10 < 10 < 10 < 10 < 10 Deltamethrin < 20 < 20 < 20 < 20 < 20 Demeton-S-methyl < 10 < 10 < 10 < 10 < 10 Demeton-S-methyl sulphone < 10 < 10 < 10 < 10 < 10 Demeton-S-methyl sulphoxide < 10 < 10 < 10 < 10 < 10 Desmedipham < 20 < 20 < 20 < 20 < 20 Diafenthiuron < 50 < 50 < 50 < 50 < 50 Diazinon < 10 < 10 < 10 < 10 < 10 Dichlobenil < 20 < 20 < 20 < 20 < 20 Dichlofluanid < 10 < 10 < 10 < 10 < 10 Dichlorprop < 10 < 10 < 10 < 10 < 10 Dichlorvos < 10 < 10 < 10 < 10 < 10 Diclobutrazol < 10 < 10 < 10 < 10 < 10 Dicloran < 10 < 10 < 10 < 10 < 10 Dicofol < 20 < 20 < 20 < 20 < 20 Dicrotophos < 10 < 10 < 10 < 10 < 10 Didecyldimethylammonium chloride < 50 < 50 < 50 < 50 < 50 Dieldrin $ < 10 < 10 < 10 < 10 < 10 Diethofencarb < 10 < 10 < 10 < 10 < 10 Difenoconazole < 10 < 10 < 10 < 10 < 10 Diflubenzuron < 10 < 10 < 10 < 10 < 10 Diflufenican < 10 < 10 < 10 < 10 < 10 Dimethenamid < 10 < 10 < 10 < 10 < 10 Dimethoate < 10 < 10 < 10 < 10 < 10 Dimethomorph < 10 < 10 < 10 < 10 < 10 Dimoxystrobin < 10 < 10 < 10 < 10 < 10 Diniconazole < 10 < 10 < 10 < 10 < 10 Dinotefuran < 10 < 10 < 10 < 10 < 10 Diphenylamine < 20 < 20 < 20 < 20 < 20 Disulfoton < 10 < 10 < 10 < 10 < 10 Disulfoton sulphone < 20 < 20 < 20 < 20 < 20 Disulfoton sulphoxide < 20 < 20 < 20 < 20 < 20 Diuron < 10 < 10 < 10 < 10 < 10 Dmsa < 10 < 10 < 10 < 10 < 10 Dmst < 10 < 10 < 10 < 10 < 10 Dodine < 20 < 20 < 20 < 20 < 20 Endosulfan (I) ж < 10 < 10 < 10 < 10 < 10 Endosulfan (II) ж < 10 < 10 < 10 < 10 < 10 Endosulfan-sulphate ж < 10 < 10 < 10 < 10 < 10 ψ Maximum allowed content 50 µg/kg of sum of DDT isomers stipulated in 2002/32/EC, $ Maximum allowed content of 10 µg/kg stipulated in 2002/32/EC, ж Maximum allowed content 10 µg/kg of sum of endosulfan isomers stipulated in 2002/32/EC .

Table S11 (continued).

Musca Sample Identifier Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Compound Endrin ♦ < 10 < 10 < 10 < 10 < 10 Epn < 10 < 10 < 10 < 10 < 10 Epoxiconazole < 10 < 10 < 10 < 10 < 10 Eptc < 20 < 20 < 20 < 20 < 20 Ethiofencarb < 10 < 10 < 10 < 10 < 10 Ethiofencarb sulphone < 10 < 10 < 10 < 10 < 10 Ethiofencarb sulphoxide < 10 < 10 < 10 < 10 < 10 Ethion < 10 < 10 < 10 < 10 < 10 Ethirimol < 10 < 10 < 10 < 10 < 10 Ethofumesate < 10 < 10 < 10 < 10 < 10 Ethoprophos < 10 < 10 < 10 < 10 < 10 Etofenprox < 10 < 10 < 10 < 10 < 10 Etoxazole < 20 < 20 < 20 < 20 < 20 Etridiazole < 20 < 20 < 20 < 20 < 20 Etrimfos < 10 < 10 < 10 < 10 < 10 Famoxadone < 10 < 10 < 10 < 10 < 10 Fenamidone < 10 < 10 < 10 < 10 < 10 Fenamiphos < 10 < 10 < 10 < 10 < 10 Fenamiphos sulphone < 10 < 10 < 10 < 10 < 10 Fenamiphos sulphoxide < 10 < 10 < 10 < 10 < 10 Fenarimol < 10 < 10 < 10 < 10 < 10 Fenazaquin < 10 < 10 < 10 < 10 < 10 Fenbuconazole < 10 < 10 < 10 < 10 < 10 Fenbutatin oxide < 20 < 20 < 20 < 20 < 20 Fenhexamid < 20 < 20 < 20 < 20 < 20 Fenitrothion < 10 < 10 < 10 < 10 < 10 Fenoxycarb < 10 < 10 < 10 < 10 < 10 Fenpropathrin < 10 < 10 < 10 < 10 < 10 Fenpropidin < 20 < 20 < 20 < 20 < 20 Fenpropimorph < 10 < 10 < 10 < 10 < 10 Fenpyroximate < 10 < 10 < 10 < 10 < 10 Fensulfothion < 10 < 10 < 10 < 10 < 10 Fensulfothion-oxon < 10 < 10 < 10 < 10 < 10 Fensulfothion-oxon-sulfone < 10 < 10 < 10 < 10 < 10 Fensulfothion-sulfone < 10 < 10 < 10 < 10 < 10 Fenthion < 10 < 10 < 10 < 10 < 10 Fenthion sulphone < 10 < 10 < 10 < 10 < 10 Fenthion sulphoxide < 10 < 10 < 10 < 10 < 10 Fenvalerate < 10 < 10 < 10 < 10 < 10 Fipronil < 10 < 10 < 10 < 10 < 10 Fipronil-sulfone < 50 < 50 < 50 < 50 < 50 Flonicamid < 10 < 10 < 10 < 10 < 10 Fluazifop (free acid) < 10 < 10 < 10 < 10 < 10 Fluazifop-P-butyl < 10 < 10 < 10 < 10 < 10 Fluazinam < 10 < 10 < 10 < 10 < 10 ♦ Maximum allowed content of 10 µg/kg stipulated in 2002/32/EC.

Table S11 (continued).

Musca Sample Identifier Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Compound Flubendiamide < 10 < 10 < 10 < 10 < 10 Flucythrinate < 20 < 20 < 20 < 20 < 20 Fludioxonil < 10 < 10 < 10 < 10 < 10 Flufenacet < 10 < 10 < 10 < 10 < 10 Flufenoxuron < 20 < 20 < 20 < 20 < 20 Fluometuron < 10 < 10 < 10 < 10 < 10 Fluopicolide < 10 < 10 < 10 < 10 < 10 Fluoxastrobin < 10 < 10 < 10 < 10 < 10 Fluquinconazole < 10 < 10 < 10 < 10 < 10 Flurochloridone < 20 < 20 < 20 < 20 < 20 Fluroxypyr < 20 < 20 < 20 < 20 < 20 Flusilazole < 10 < 10 < 10 < 10 < 10 Flutolanil < 10 < 10 < 10 < 10 < 10 Flutriafol < 10 < 10 < 10 < 10 < 10 Fluvalinate < 10 < 10 < 10 < 10 < 10 Fluxapyroxad < 10 < 10 < 10 < 10 < 10 Folpet < 10 < 10 < 10 < 10 < 10 Fonofos < 10 < 10 < 10 < 10 < 10 Formetanate-hcl < 20 < 20 < 20 < 20 < 20 Formothion < 10 < 10 < 10 < 10 < 10 Fosthiazate < 10 < 10 < 10 < 10 < 10 Furalaxyl < 10 < 10 < 10 < 10 < 10 Furathiocarb < 10 < 10 < 10 < 10 < 10 Furmecyclox < 10 < 10 < 10 < 10 < 10 Halofenozide < 10 < 10 < 10 < 10 < 10 Halosulfuron-methyl < 10 < 10 < 10 < 10 < 10 Haloxyfop (free acid) < 10 < 10 < 10 < 10 < 10 HCH-alpha ♣ < 10 < 10 < 10 < 10 < 10 HCH-beta § < 10 < 10 < 10 < 10 < 10 HCH-gamma # < 10 < 10 < 10 < 10 < 10 Heptachlor ◊ < 10 < 10 < 10 < 10 < 10 Heptachlor epoxide (cis) ◊ < 10 < 10 < 10 < 10 < 10 Heptachlor epoxide (trans) ◊ < 10 < 10 < 10 < 10 < 10 Heptenophos < 10 < 10 < 10 < 10 < 10 Hexachlorobenzene Ω < 10 < 10 < 10 < 10 < 10 Hexaconazole < 10 < 10 < 10 < 10 < 10 Hexazinone < 10 < 10 < 10 < 10 < 10 Hexythiazox < 10 < 10 < 10 < 10 < 10 Imazalil < 20 < 20 < 20 < 20 < 20 Imidacloprid < 10 < 10 < 10 < 10 < 10 Indoxacarb < 10 < 10 < 10 < 10 < 10 Ioxynil < 20 < 20 < 20 < 20 < 20 Iprodione < 20 < 20 < 20 < 20 < 20 ♣ Maximum allowed content of 20 µg/kg stipulated in 2002/32/EC, § Maximum allowed content of 5 µg/kg stipulated in 2002/32/EC, # Maximum allowed content of 200 µg/kg stipulated in 2002/32/EC, ◊ Maximum allowed content 10 µg/kg of sum of heptachlor isomers stipulated in 2002/32/EC, Ω Maximum allowed content of 10 µg/kg stipulated in 2002/32/EC.

Table S11 (continued).

Musca Sample Identifier Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Compound Iprovalicarb < 10 < 10 < 10 < 10 < 10 Isazofos < 10 < 10 < 10 < 10 < 10 Isocarbofos < 10 < 10 < 10 < 10 < 10 Isofenphos < 10 < 10 < 10 < 10 < 10 Isofenphos-methyl < 10 < 10 < 10 < 10 < 10 Isoprocarb < 10 < 10 < 10 < 10 < 10 Isoprothiolane < 10 < 10 < 10 < 10 < 10 Isoproturon < 10 < 10 < 10 < 10 < 10 Isoxaben < 10 < 10 < 10 < 10 < 10 Isoxaflutole < 10 < 10 < 10 < 10 < 10 Kresoxim-methyl < 10 < 10 < 10 < 10 < 10 Lenacil < 10 < 10 < 10 < 10 < 10 Linuron < 10 < 10 < 10 < 10 < 10 Lufenuron < 20 < 20 < 20 < 20 < 20 Malaoxon < 10 < 10 < 10 < 10 < 10 Malathion < 10 < 10 < 10 < 10 < 10 Mandipropamid < 10 < 10 < 10 < 10 < 10 Mecarbam < 10 < 10 < 10 < 10 < 10 Mepanipyrim < 10 < 10 < 10 < 10 < 10 Mephosfolan < 10 < 10 < 10 < 10 < 10 Mepronil < 10 < 10 < 10 < 10 < 10 Mesosulfuron-methyl < 10 < 10 < 10 < 10 < 10 Metaflumizone < 20 < 20 < 20 < 20 < 20 Metalaxyl < 10 < 10 < 10 < 10 < 10 Metamitron < 10 < 10 < 10 < 10 < 10 Metazachlor < 20 < 20 < 20 < 20 < 20 Metconazole < 10 < 10 < 10 < 10 < 10 Methabenzthiazuron < 10 < 10 < 10 < 10 < 10 Methacrifos < 10 < 10 < 10 < 10 < 10 Methamidophos < 10 < 10 < 10 < 10 < 10 Methidathion < 10 < 10 < 10 < 10 < 10 Methiocarb < 10 < 10 < 10 < 10 < 10 Methiocarb sulfoxide < 10 < 10 < 10 < 10 < 10 Methiocarb sulphone < 10 < 10 < 10 < 10 < 10 Methomyl < 10 < 10 < 10 < 10 < 10 Methoxychlor < 10 < 10 < 10 < 10 < 10 Methoxyfenozide < 10 < 10 < 10 < 10 < 10 Metobromuron < 10 < 10 < 10 < 10 < 10 Metolachlor < 10 < 10 < 10 < 10 < 10 Metolcarb < 10 < 10 < 10 < 10 < 10 Metosulam < 10 < 10 < 10 < 10 < 10 Metoxuron < 10 < 10 < 10 < 10 < 10 Metrafenone < 10 < 10 < 10 < 10 < 10 Metribuzin < 20 < 20 < 20 < 20 < 20 Metsulfuron-methyl < 20 < 20 < 20 < 20 < 20

Table S11 (continued).

Musca Sample Identifier Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Compound Metaflumizone < 20 < 20 < 20 < 20 < 20 Metalaxyl < 10 < 10 < 10 < 10 < 10 Metamitron < 10 < 10 < 10 < 10 < 10 Metazachlor < 20 < 20 < 20 < 20 < 20 Metconazole < 10 < 10 < 10 < 10 < 10 Methabenzthiazuron < 10 < 10 < 10 < 10 < 10 Methacrifos < 10 < 10 < 10 < 10 < 10 Methamidophos < 10 < 10 < 10 < 10 < 10 Methidathion < 10 < 10 < 10 < 10 < 10 Methiocarb < 10 < 10 < 10 < 10 < 10 Methiocarb sulfoxide < 10 < 10 < 10 < 10 < 10 Methiocarb sulphone < 10 < 10 < 10 < 10 < 10 Methomyl < 10 < 10 < 10 < 10 < 10 Methoxychlor < 10 < 10 < 10 < 10 < 10 Methoxyfenozide < 10 < 10 < 10 < 10 < 10 Metobromuron < 10 < 10 < 10 < 10 < 10 Metolachlor < 10 < 10 < 10 < 10 < 10 Metolcarb < 10 < 10 < 10 < 10 < 10 Metosulam < 10 < 10 < 10 < 10 < 10 Metoxuron < 10 < 10 < 10 < 10 < 10 Metrafenone < 10 < 10 < 10 < 10 < 10 Metribuzin < 20 < 20 < 20 < 20 < 20 Metsulfuron-methyl < 20 < 20 < 20 < 20 < 20 Mevinphos < 10 < 10 < 10 < 10 < 10 Molinate < 10 < 10 < 10 < 10 < 10 Monocrotophos < 10 < 10 < 10 < 10 < 10 Monolinuron < 10 < 10 < 10 < 10 < 10 Monuron < 10 < 10 < 10 < 10 < 10 Myclobutanil < 10 < 10 < 10 < 10 < 10 N-2,4-dimethylphenyl-N`- < 10 < 10 < 10 < 10 < 10 methylformamidine Napropamide < 20 < 20 < 20 < 20 < 20 Nitenpyram < 10 < 10 < 10 < 10 < 10 Nitrofen < 10 < 10 < 10 < 10 < 10 Nitrothal-isopropyl < 10 < 10 < 10 < 10 < 10 Nuarimol < 10 < 10 < 10 < 10 < 10 Ofurace < 10 < 10 < 10 < 10 < 10 Omethoate < 10 < 10 < 10 < 10 < 10 Oxadiazon < 10 < 10 < 10 < 10 < 10 Oxadixyl < 10 < 10 < 10 < 10 < 10 Oxamyl < 10 < 10 < 10 < 10 < 10 Oxyfluorfen < 20 < 20 < 20 < 20 < 20 Paclobutrazol < 10 < 10 < 10 < 10 < 10 Paraoxon-methyl < 10 < 10 < 10 < 10 < 10 Parathion-ethyl < 10 < 10 < 10 < 10 < 10

Table S11 (continued).

Musca Sample Identifier Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Compound Parathion-methyl < 10 < 10 < 10 < 10 < 10 Penconazole < 10 < 10 < 10 < 10 < 10 Pencycuron < 10 < 10 < 10 < 10 < 10 Pendimethalin < 10 < 10 < 10 < 10 < 10 Pentachloroanaline < 10 < 10 < 10 < 10 < 10 Pentanochlor < 10 < 10 < 10 < 10 < 10 Permethrin < 10 < 10 < 10 < 10 < 10 Phenmedipham < 20 < 20 < 20 < 20 < 20 Phenthoate < 10 < 10 < 10 < 10 < 10 Phorate < 10 < 10 < 10 < 10 < 10 Phorate sulphone < 20 < 20 < 20 < 20 < 20 Phorate sulphoxide < 20 < 20 < 20 < 20 < 20 Phosalone < 10 < 10 < 10 < 10 < 10 Phosmet < 10 < 10 < 10 < 10 < 10 Phosphamidon < 10 < 10 < 10 < 10 < 10 Phoxim < 10 < 10 < 10 < 10 < 10 Picolinafen < 10 < 10 < 10 < 10 < 10 Picoxystrobin < 10 < 10 < 10 < 10 < 10 Piperonyl butoxide < 10 < 10 < 10 < 10 < 10 Pirimicarb < 10 < 10 < 10 < 10 < 10 Pirimicarb-desmethyl < 10 < 10 < 10 < 10 < 10 Pirimiphos-ethyl < 10 < 10 < 10 < 10 < 10 Pirimiphos-methyl < 10 < 10 < 10 < 10 < 10 Prochloraz < 10 < 10 < 10 < 10 < 10 Procymidone < 10 < 10 < 10 < 10 < 10 Profenofos < 10 < 10 < 10 < 10 < 10 Promecarb < 10 < 10 < 10 < 10 < 10 Prometryn < 10 < 10 < 10 < 10 < 10 Propachlor < 10 < 10 < 10 < 10 < 10 Propamocarb (free base) < 10 < 10 < 10 < 10 < 10 Propanil < 20 < 20 < 20 < 20 < 20 Propaquizafop < 20 < 20 < 20 < 20 < 20 Propargite < 10 < 10 < 10 < 10 < 10 Propetamphos < 10 < 10 < 10 < 10 < 10 Propham < 10 < 10 < 10 < 10 < 10 Propiconazole < 10 < 10 < 10 < 10 < 10 Propoxur < 10 < 10 < 10 < 10 < 10 Propyzamide < 10 < 10 < 10 < 10 < 10 Prosulfocarb < 20 < 20 < 20 < 20 < 20 Prosulfuron < 20 < 20 < 20 < 20 < 20 Prothioconazole-desthio < 10 < 10 < 10 < 10 < 10 Prothiofos < 10 < 10 < 10 < 10 < 10 Pymetrozine < 10 < 10 < 10 < 10 < 10 Pyraclostrobin < 10 < 10 < 10 < 10 < 10

Table S11 (continued).

Musca Sample Identifier Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Compound Pyrazophos < 10 < 10 < 10 < 10 < 10 Pyrethrins < 10 < 10 < 10 < 10 < 10 Pyridaben < 10 < 10 < 10 < 10 < 10 Pyridaphenthion < 10 < 10 < 10 < 10 < 10 Pyrifenox < 10 < 10 < 10 < 10 < 10 Pyrimethanil < 20 < 20 < 20 < 20 < 20 Pyriproxyfen < 10 < 10 < 10 < 10 < 10 Quassia < 10 < 10 < 10 < 10 < 10 Quinalphos < 10 < 10 < 10 < 10 < 10 Quinmerac < 20 < 20 < 20 < 20 < 20 Quinomethionate < 10 < 10 < 10 < 10 < 10 Quinoxyfen < 10 < 10 < 10 < 10 < 10 Quintozene < 10 < 10 < 10 < 10 < 10 Resmethrin < 10 < 10 < 10 < 10 < 10 Rimsulfuron < 10 < 10 < 10 < 10 < 10 Rotenone < 10 < 10 < 10 < 10 < 10 Simazine < 10 < 10 < 10 < 10 < 10 Spinosad < 10 < 10 < 10 < 10 < 10 Spirodiclofen < 10 < 10 < 10 < 10 < 10 Spiromesifen < 10 < 10 < 10 < 10 < 10 Spiroxamine < 10 < 10 < 10 < 10 < 10 Sulcotrione < 20 < 20 < 20 < 20 < 20 Tebuconazole < 10 < 10 < 10 < 10 < 10 Tebufenozide < 10 < 10 < 10 < 10 < 10 Tebufenpyrad < 10 < 10 < 10 < 10 < 10 Tebuthiuron < 10 < 10 < 10 < 10 < 10 Tecnazene < 10 < 10 < 10 < 10 < 10 Teflubenzuron < 10 < 10 < 10 < 10 < 10 Tefluthrin < 10 < 10 < 10 < 10 < 10 Tepraloxydim < 20 < 20 < 20 < 20 < 20 Terbufos < 10 < 10 < 10 < 10 < 10 Terbufos sulfone < 10 < 10 < 10 < 10 < 10 Terbufos sulfoxide < 10 < 10 < 10 < 10 < 10 Terbuthylazine < 20 < 20 < 20 < 20 < 20 Terbutryn < 10 < 10 < 10 < 10 < 10 Tetrachlorvinphos < 10 < 10 < 10 < 10 < 10 Tetraconazole < 10 < 10 < 10 < 10 < 10 Tetradifon < 10 < 10 < 10 < 10 < 10 Tetramethrin < 10 < 10 < 10 < 10 < 10 Thiabendazole < 20 < 20 < 20 < 20 < 20 Thiacloprid < 10 < 10 < 10 < 10 < 10 Thiamethoxam < 10 < 10 < 10 < 10 < 10 Thiodicarb < 10 < 10 < 10 < 10 < 10 Thiophanate-methyl < 10 < 10 < 10 < 10 < 10

Table S11 (continued).

Musca Sample Identifier Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Compound Tolclofos-methyl < 10 < 10 < 10 < 10 < 10 Tolfenpyrad < 10 < 10 < 10 < 10 < 10 Tolylfluanid < 10 < 10 < 10 < 10 < 10 Triadimefon < 10 < 10 < 10 < 10 < 10 Triadimenol < 10 < 10 < 10 < 10 < 10 Triallate < 20 < 20 < 20 < 20 < 20 Triasulfuron < 20 < 20 < 20 < 20 < 20 Triazamate acid < 10 < 10 < 10 < 10 < 10 Triazophos < 10 < 10 < 10 < 10 < 10 Triclopyr < 20 < 20 < 20 < 20 < 20 Tricyclazole < 10 < 10 < 10 < 10 < 10 Trifloxystrobin < 10 < 10 < 10 < 10 < 10 Triflumizole < 10 < 10 < 10 < 10 < 10 Triflumuron < 10 < 10 < 10 < 10 < 10 Trifluralin < 10 < 10 < 10 < 10 < 10 Triforine < 20 < 20 < 20 < 20 < 20 Triticonazole < 10 < 10 < 10 < 10 < 10 Vinclozolin < 10 < 10 < 10 < 10 < 10 Zoxamide < 10 < 10 < 10 < 10 < 10

Table S12. Results of pesticide screen of other larvae samples. Units reported are µg/kg.

Sample Identifier Calliphora , Calliphora , Calliphora , H.Illucens , Sample 1 Sample 2 Sample 3 Sample 1 Compound Piperonyl butoxide 200 < 10 < 10 < 10 All other compounds < Limit of D etection as described in Table S11 .

Table S13. Results of metals analysis for Musca larvae samples. Units reported are mg/kg.

Musca Sample Identifier Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Compound Limit of Detection 7 Li 0.001 0.221 0.162 0.053 0.035 0.099 9 Be 0.001 0.007 0.009 0.007 <0.001 0.002 11 B 0.1 0.8 0.9 1.1 <0.1 0.5 23 Na 2 4820 5040 4230 1500 1470 24 Mg 0.1 1840 2610 5310 4840 5220 27 Al 0.1 247 424 180 6.1 56.7 31 P 500 9400 11100 15800 12100 15200 34 S 500 5400 5400 5800 5600 5600 39 K 5 10400 11300 11100 12200 14300 43 Ca 10 5190 8770 8520 1950 7470 45 Sc 0.005 0.052 0.082 0.035 <0.005 0.011 47 Ti 0.1 8.9 20.6 9.8 0.5 3.2 51 V 0.005 0.51 0.751 0.541 0.005 0.102 52 Cr 0.02 0.89 1.28 2.28 0.08 0.52 55 Mn 0.1 318 269 205 240 295 56 Fe 0.05 506 512 424 272 328 59 Co 0.001 0.186 0.304 0.124 0.023 0.044 60 Ni 0.01 2.1 0.58 0.82 0.44 0.4 63 Cu 0.02 38.3 53.2 33.4 19.5 22.4 66 Zn 0.2 181 252 206 219 188 71 Ga 0.001 0.081 0.109 0.052 0.005 0.015 72 Ge 0.005 0.027 0.022 0.013 <0.005 0.008 75 As # 0.002 0.191 0.408 0.094 0.161 0.079 78 Se 0.002 1.73 1.94 0.569 0.335 0.251 85 Rb 0.002 3.44 12.8 12.8 6.9 15.2 88 Sr 0.001 11.3 26.2 12.6 8.87 10.2 89 Y 0.001 0.135 0.08 0.07 0.003 0.013 90 Zr 0.001 0.135 0.252 0.154 0.008 0.04 93 Nb 0.001 0.032 0.073 0.042 0.001 0.007 95 Mo 0.002 0.898 0.59 0.541 0.461 0.826 101 Ru 0.005 <0.005 <0.005 <0.005 <0.005 <0.005 103 Rh 0.001 <0.001 <0.001 <0.001 <0.001 <0.001 105 Pd 0.001 0.004 0.007 0.004 0.002 0.003 107 Ag 0.05 <0.05 <0.05 <0.05 <0.05 <0.05 111 Cd § 0.001 0.334 0.625 0.348 0.711 0.723 118 Sn 0.005 0.021 0.11 0.023 0.01 0.011 121 Sb 0.001 0.023 0.013 0.012 0.05 0.036 125 Te 0.005 <0.005 <0.005 <0.005 <0.005 <0.005 133 Cs 0.001 0.023 0.041 0.017 0.005 0.017 137 Ba 0.002 8.41 15.9 11.4 19.3 12.2 139 La 0.001 0.206 0.218 0.132 0.003 0.024 140 Ce 0.001 0.437 0.447 0.261 0.006 0.046 141 Pr 0.001 0.052 0.048 0.031 <0.001 0.005 146 Nd 0.001 0.211 0.187 0.118 0.003 0.021 147 Sm 0.001 0.041 0.032 0.02 <0.001 0.004 153 Eu 0.001 0.009 0.008 0.005 0.002 0.002 157 Gd 0.001 0.041 0.028 0.02 <0.001 0.003 159 Tb 0.001 0.005 0.004 0.003 <0.001 <0.001 163 Dy 0.001 0.028 0.019 0.015 <0.001 0.003 165 Ho 0.001 0.006 0.004 0.003 <0.001 <0.001 166 Er 0.001 0.014 0.009 0.007 <0.001 0.001 169 Tm 0.001 0.002 0.001 <0.001 <0.001 <0.001 172 Yb 0.001 0.012 0.008 0.005 <0.001 0.001 175 Lu 0.001 0.002 0.001 <0.001 <0.001 <0.001 178 Hf 0.001 0.004 0.005 0.004 <0.001 <0.001 181 Ta 0.001 <0.001 0.001 0.001 <0.001 <0.001 # Maximum allowed content of 2 mg/kg stipulated in 2002/32/EC, § Maximum allowed content of 0.5 mg/kg stipulated in 2002/32/EC.

Table S13 (continued.

Musca Sample Identifier Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Compound Limit of Detection 182 W 0.002 0.041 0.01 0.007 0.006 0.012 185 Re 0.001 <0.001 <0.001 <0.001 <0.001 <0.001 193 Ir 0.001 <0.001 <0.001 <0.001 <0.001 <0.001 195 Pt 0.001 <0.001 <0.001 <0.001 <0.001 <0.001 197 Au 0.001 <0.001 <0.001 <0.001 <0.001 <0.001 201 Hg φ 0.001 0.004 0.035 0.038 0.002 0.004 205 Tl 0.001 0.006 0.003 0.002 0.001 0.002 208 Pb Ω 0.001 0.46 1.16 0.249 0.058 0.333 232 Th 0.001 0.051 0.066 0.036 0.001 0.009 238 U 0.001 0.016 0.011 0.147 <0.001 0.005 φ Maximum allowed content of 0.1 mg/kg stipulated in 2002/32/EC, Ω Maximum allowed content of 5 mg/kg stipulated in 2002/32/EC.

Table S14. Results of metals analysis for other larvae samples. Units reported are mg/kg.

Sample Identifier Calliphora , Calliphora , Calliphora , H.Illucens , Sample 1 Sample 2 Sample 3 Sample 1 Compound Limit of detection 7 Li 0.001 0.008 0.01 0.184 0.122 9 Be 0.001 <0.001 <0.001 0.009 0.003 11 B 0.1 <0.1 0.3 0.9 1.7 23 Na 2 4810 5840 6470 720 24 Mg 0.1 859 1030 3800 3830 27 Al 0.1 9 2.8 429 96.4 31 P 500 6700 7100 16900 8900 34 S 500 5300 5200 5100 4000 39 K 5 10000 10500 11500 11900 43 Ca 10 950 960 27800 41900 45 Sc 0.005 <0.005 <0.005 0.069 0.017 47 Ti 0.1 2.2 0.2 20.2 8.2 51 V 0.005 0.02 0.01 0.665 0.162 52 Cr 0.02 0.06 0.11 1.12 0.91 55 Mn 0.1 9.3 9 246 146 56 Fe 0.05 108 165 451 263 59 Co 0.001 0.009 0.008 0.805 0.199 60 Ni 0.01 0.03 0.13 0.5 0.52 63 Cu 0.02 13.5 19.5 27.4 14 66 Zn 0.2 101 118 669 452 71 Ga 0.001 0.005 0.002 0.134 0.023 72 Ge 0.005 <0.005 <0.005 0.017 0.012 75 As # 0.002 0.009 0.004 0.734 0.142 78 Se 0.002 0.318 0.347 1.28 0.517 85 Rb 0.002 12.4 9.74 15.3 5.7 88 Sr 0.001 0.789 0.79 85.5 63.5 89 Y 0.001 0.003 0.001 0.099 0.031 90 Zr 0.001 0.007 0.003 0.235 0.17 93 Nb 0.001 0.002 <0.001 0.072 0.028 95 Mo 0.002 0.512 0.558 0.48 0.992 101 Ru 0.005 <0.005 <0.005 <0.005 <0.005 103 Rh 0.001 <0.001 <0.001 <0.001 <0.001 105 Pd 0.001 <0.001 <0.001 0.024 0.017 107 Ag 0.05 <0.05 <0.05 <0.05 <0.05 111 Cd § 0.001 0.02 0.018 0.37 0.12 118 Sn 0.005 1.14 0.047 0.116 0.139 121 Sb 0.001 0.01 0.003 0.016 0.028 125 Te 0.005 <0.005 <0.005 <0.005 <0.005 133 Cs 0.001 0.012 0.013 0.047 0.04 137 Ba 0.002 1.01 0.536 31.3 25.5 139 La 0.001 0.015 0.002 0.235 0.067 140 Ce 0.001 0.033 0.003 0.574 0.165 141 Pr 0.001 0.004 <0.001 0.055 0.014 146 Nd 0.001 0.015 0.001 0.216 0.053 147 Sm 0.001 0.002 <0.001 0.042 0.01 Maximum allowed content of 2 mg/kg stipulated in 2002/32/EC, § Maximum allowed content of 0.5 mg/kg stipulated in 2002/32/EC.

Table S14 (continued).

Sample Identifier Calliphora , Calliphora , Calliphora , H.Illucens , Sample 1 Sample 2 Sample 3 Sample 1 Compound Limit of detection 153 Eu 0.001 0.015 0.002 0.235 0.067 157 Gd 0.001 0.033 0.003 0.574 0.165 159 Tb 0.001 0.004 <0.001 0.055 0.014 163 Dy 0.001 0.015 0.001 0.216 0.053 165 Ho 0.001 0.002 <0.001 0.042 0.01 166 Er 0.001 <0.001 <0.001 0.011 0.004 169 Tm 0.001 0.002 <0.001 0.035 0.008 172 Yb 0.001 <0.001 <0.001 0.004 0.001 175 Lu 0.001 <0.001 <0.001 0.024 0.007 178 Hf 0.001 <0.001 <0.001 0.004 0.001 181 Ta 0.001 <0.001 <0.001 0.011 0.003 182 W 0.002 <0.001 <0.001 0.002 <0.001 185 Re 0.001 <0.001 <0.001 0.01 0.003 193 Ir 0.001 <0.001 <0.001 0.002 <0.001 195 Pt 0.001 <0.001 <0.001 0.006 0.003 197 Au 0.001 <0.001 <0.001 0.001 <0.001 201 Hg φ 0.001 <0.002 <0.002 0.008 0.007 205 Tl 0.001 <0.001 <0.001 <0.001 <0.001 208 Pb Ω 0.001 <0.001 <0.001 <0.001 <0.001 232 Th 0.001 <0.001 <0.001 <0.001 <0.001 238 U 0.001 <0.001 <0.001 0.001 <0.001 φ Maximum allowed content of 0.1 mg/kg stipulated in 2002/32/EC, Ω Maximum allowed content of 5 mg/kg stipulated in 2002/32/EC.

Table S15. Results of higher limit dioxin analysis for Musca larvae samples. Units reported are µg/kg.

Musca Sample Identifier Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Compound PCB18 0.02 0.05 0.06 0.01 0.07 PCB28 0.24 0.10 0.11 0.02 0.09 PCB31 0.11 0.06 0.09 0.02 0.08 PCB47 0.08 0.03 0.04 0.20 0.08 PCB49 0.04 0.02 0.04 0.01 0.03 PCB51 <0.01 <0.01 <0.01 0.04 0.02 PCB52 0.06 0.05 0.11 0.01 0.06 PCB99 0.06 0.15 0.71 <0.01 0.02 PCB101 0.09 0.07 0.36 <0.01 0.04 PCB105 0.04 0.11 0.56 <0.01 <0.01 PCB114 <0.01 0.01 0.04 <0.01 <0.01 PCB118 0.12 0.36 2.15 0.01 0.03 PCB123 <0.01 <0.01 0.01 <0.01 <0.01 PCB128 0.02 0.06 0.24 <0.01 <0.01 PCB138 0.25 0.41 1.52 <0.01 0.02 PCB153 0.27 0.78 1.85 0.02 0.03 PCB156 0.02 0.05 0.17 <0.01 <0.01 PCB157 <0.01 <0.01 0.03 <0.01 <0.01 PCB167 <0.01 0.03 0.09 <0.01 <0.01 PCB180 0.17 0.27 0.33 <0.01 <0.01 PCB189 <0.01 0.01 <0.01 <0.01 <0.01

SUM of ICES 6 † 1.08 1.68 4.28 0.05 0.24 † ICES 6 comprises of PCB 28, 52, 101, 138, 153 and 180. Maximum allowed content of 10 µg/kg stipulated in 277/2012/EC (Annex 1 to 2002/32/EC).

Table S16. Results of lower limit dioxin analysis for Musca larvae samples. Units reported are ng/kg.

Musca Sample Identifier Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Compound PCB77 17.95 16.90 26.77 5.74 24.05 PCB81 0.94 1.12 0.98 0.93 1.01 PCB126 0.62 2.92 3.15 0.96 1.27 PCB169 0.11 0.62 0.16 0.23 0.25 2,3,7,8-TCDD 0.01 0.03 <0.01 0.01 0.01 1,2,3,7,8-PeCDD 0.02 0.08 <0.01 0.03 0.02 1,2,3,4,7,8-HxCDD 0.07 0.06 0.02 0.03 0.02 1,2,3,6,7,8-HxCDD 0.15 0.14 0.06 0.05 0.05 1,2,3,7,8,9-HxCDD 0.06 0.07 0.03 0.01 0.02 1,2,3,4,6,7,8-HpCDD 3.86 2.11 4.64 0.29 0.25 OCDD 50.48 28.31 32.74 2.18 0.87 2,3,7,8-TCDF 0.08 0.31 0.17 0.12 0.19 1,2,3,7,8-PeCDF 0.04 0.19 0.05 0.05 0.07 2,3,4,7,8-PeCDF 0.07 0.18 0.05 0.13 0.15 1,2,3,4,7,8-HxCDF 0.10 0.14 0.07 0.12 0.13 1,2,3,6,7,8-HxCDF 0.11 0.15 0.05 0.11 0.11 1,2,3,7,8,9-HxCDF <0.01 <0.01 <0.01 <0.01 <0.01 2,3,4,6,7,8-HxCDF 0.08 0.07 0.01 0.09 0.08 1,2,3,4,6,7,8-HpCDF 1.25 0.15 0.09 0.26 0.18 1,2,3,4,7,8,9-HpCDF 0.03 <0.01 <0.01 0.02 0.01 OCDF 0.59 0.04 0.02 0.09 0.07

SUM of WHO-TEQ † 0.18 0.29 0.29 0.14 0.29 † WHO-TEQ is the summed toxic equivalence factor of all compounds in the table. Maximum allowed content of 0.75 ng/kg stipulated in 2002/32/EC.

Table S17. Results of higher limit dioxin analysis for other larvae samples. Units reported are µg/kg.

Sample Identifier Calliphora , Calliphora , Calliphora , H.Illucens , Sample 1 Sample 2 Sample 3 Sample 1 Compound PCB18 0.02 0.04 0.05 0.06 PCB28 0.03 0.05 0.05 0.08 PCB31 0.02 0.05 0.05 0.07 PCB47 <0.01 0.02 0.02 0.03 PCB49 <0.01 0.02 0.02 0.03 PCB51 <0.01 <0.01 <0.01 <0.01 PCB52 0.01 0.03 0.05 0.09 PCB99 <0.01 0.01 0.04 0.06 PCB101 0.01 0.02 0.04 0.10 PCB105 <0.01 0.01 0.05 0.03 PCB114 <0.01 <0.01 <0.01 <0.01 PCB118 0.02 0.03 0.18 0.10 PCB123 <0.01 <0.01 <0.01 <0.01 PCB128 <0.01 <0.01 0.01 0.02 PCB138 0.06 0.12 0.16 0.15 PCB153 0.12 0.23 0.65 0.21 PCB156 <0.01 0.01 0.03 0.01 PCB157 <0.01 <0.01 <0.01 <0.01 PCB167 <0.01 <0.01 0.03 <0.01 PCB180 0.08 0.17 0.18 0.06 PCB189 <0.01 <0.01 <0.01 <0.01

SUM of ICES 6 † 0.31 0.62 1.13 0.69 † ICES 6 comprises of PCB 28, 52, 101, 138, 153 and 180. Maximum allowed content of 10 µg/kg stipulated in 277/2012/EC (Annex 1 to 2002/32/EC).

Table S18. Results of lower limit dioxin analysis for other larvae samples. Units reported are ng/kg.

Sample Identifier Calliphora , Calliphora , Calliphora , H.Illucens , Sample 1 Sample 2 Sample 3 Sample 1 Compound PCB77 2.54 4.38 7.90 8.25 PCB81 0.14 0.18 0.55 0.34 PCB126 0.28 0.33 1.19 0.83 PCB169 0.09 0.09 0.42 0.19 2,3,7,8-TCDD 0.01 <0.01 0.02 <0.01 1,2,3,7,8-PeCDD 0.04 0.03 0.03 0.03 1,2,3,4,7,8-HxCDD 0.09 0.11 0.02 0.01 1,2,3,6,7,8-HxCDD 0.39 0.38 0.09 0.06 1,2,3,7,8,9-HxCDD 0.14 0.08 0.03 0.03 1,2,3,4,6,7,8-HpCDD 9.95 11.55 0.78 0.52 OCDD 89.49 114.96 4.68 2.49 2,3,7,8-TCDF 0.08 0.02 0.14 0.13 1,2,3,7,8-PeCDF 0.03 0.02 0.05 0.10 2,3,4,7,8-PeCDF 0.20 0.17 0.05 0.10 1,2,3,4,7,8-HxCDF 0.20 0.15 0.03 0.14 1,2,3,6,7,8-HxCDF 0.22 0.22 0.03 0.08 1,2,3,7,8,9-HxCDF 0.02 <0.01 <0.01 <0.01 2,3,4,6,7,8-HxCDF 0.24 0.20 0.02 0.06 1,2,3,4,6,7,8-HpCDF 6.42 2.82 0.05 0.10 1,2,3,4,7,8,9-HpCDF 0.13 0.09 <0.01 0.02 OCDF 5.90 1.08 0.03 0.04

SUM of WHO-TEQ † 0.44 0.38 0.29 0.29 † WHO-TEQ is the summed toxic equivalence factor of all compounds in the table. Maximum allowed content of 0.75 ng/kg stipulated in 2002/32/EC.

Table S19. Results of PAH analysis for Musca larvae samples. Units reported are µg/kg.

Musca Sample Identif ier Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Compound Acenaphthylene 6.77 3.92 1.68 2.97 3.03 Acenaphthene 2.86 6.08 12.43 2.08 35.22 Fluorene 6.50 4.52 11.79 3.75 67.84 Phenanthrene 35.53 49.74 55.08 14.79 144.03 Anthracene 2.11 2.78 2.84 1.16 8.88 Fluoranthene 17.28 7.86 5.81 3.00 29.92 Benzo[c]fluorene 0.27 0.14 0.07 <0.62 0.12 Pyrene 10.96 5.25 3.13 2.59 11.85 Benzo[ghi]fluoranthene 0.68 0.52 0.29 <0.08 0.63 Benz (a) anthracene 2.17 1.19 0.29 0.17 2.26 Benzo[b]naphtho[2,1- d]thiophene 0.59 <0.09 <0.1 0.07 0.82 Cyclopenta[c,d]pyrene <0.02 0.06 0.06 0.03 <0.02 Chrysene 2.88 0.73 0.54 0.32 2.99 5-methylchrysene <0.01 <0.01 <0.01 <0.01 <0.01 Benzo[b]fluoranthene 2.55 0.31 0.21 0.22 1.67 Benzo[j]fluoranthene 1.41 0.19 0.10 0.03 0.74 Benzo[k]fluoranthene 1.27 <0.12 <0.06 0.10 0.68 Benzo[e]pyrene 2.61 0.43 0.18 0.23 1.19 Benzo[a]pyrene 2.22 0.24 0.10 0.12 0.53 Indeno[1,2,3-cd]pyrene 2.16 0.26 0.11 0.14 0.47 Dibenz[ah]anthracene 0.47 <0.08 <0.02 <0.04 <0.11 Benzo-[g,h,i]perylene 2.51 0.37 0.10 0.17 0.52 Anthanthrene <0.1 <0.1 <0.1 <0.1 <0.1 Dibenzo[a,l]pyrene 1.60 <0.1 <0.1 <0.1 <0.1 Dibenzo[a,e]pyrene 0.59 <0.1 <0.1 <0.1 <0.1 Dibenzo[a,i]pyrene 0.45 <0.1 <0.1 <0.1 <0.1 Dibenzo[a,h]pyrene <0.1 <0.1 <0.1 <0.1 <0.1 Coronene <0.1 <0.1 <0.1 <0.1 <0.1

PAH 4 Sum † 9.82 2.47 1.14 0.83 7.45 † PAH 4 sum comprises of benz (a) anthracene, chrysene, benzo[b]fluoranthene and benzo[a]pyrene.

Table S20. Results of PAH analysis for other larvae samples. Units reported are µg/kg.

Sample Identifier and Country of Origin Calliphora , Calliphora , Calliphora , H.Illucens , Sample 1 Sample 2 Sample 3 Sample 1 Compound Acenaphthylene 4.91 2.36 1.60 2.29 Acenaphthene 2.15 2.55 7.92 13.92 Fluorene 2.33 6.14 3.97 10.74 Phenanthrene 22.73 17.07 45.55 43.03 Anthracene 1.94 1.21 2.63 2.70 Fluoranthene 17.35 3.38 6.85 7.75 Benzo[c]fluorene 0.19 0.65 0.12 <0.03 Pyrene 11.41 3.34 6.62 4.28 Benzo[ghi]fluoranthene 0.63 <0.09 1.04 0.11 Benz (a) anthracene 1.71 0.12 0.76 0.13 Benzo[b]naphtho[2,1- d]thiophene <0.42 <0.07 <0.07 <0.07 Cyclopenta[c,d]pyrene <0.02 <0.01 0.10 <0.02 Chrysene 1.96 0.16 0.76 0.20 5-methylchrysene <0.01 <0.01 <0.01 <0.01 Benzo[b]fluoranthene 1.15 <0.15 0.43 <0.08 Benzo[j]fluoranthene 0.56 0.01 0.22 <0.1 Benzo[k]fluoranthene 0.63 <0.02 0.16 <0.07 Benzo[e]pyrene 1.01 <0.1 0.52 0.08 Benzo[a]pyrene 0.77 <0.05 0.28 <0.08 Indeno[1,2,3-cd]pyrene 0.55 <0.06 0.31 <0.08 Dibenz[ah]anthracene 0.12 <0.03 <0.06 <0.04 Benzo-[g,h,i]perylene 0.58 0.07 0.39 <0.1 Anthanthrene <0.1 <0.1 <0.1 <0.1 Dibenzo[a,l]pyrene <0.1 <0.1 <0.1 <0.1 Dibenzo[a,e]pyrene <0.1 <0.1 <0.1 <0.1 Dibenzo[a,i]pyrene <0.1 <0.1 <0.1 <0.1 Dibenzo[a,h]pyrene <0.1 <0.1 <0.1 <0.1 Coronene <0.1 <0.1 <0.1 <0.1

PAH 4 Sum † 5.59 0.28 2.23 0.33 † PAH 4 sum comprises of benz (a) anthracene, chrysene, benzo[b]fluoranthene and benzo[a]pyrene.

Table S21. Results of mycotoxins screen of Musca larvae samples. Units reported are µg/kg

Musca Sample Identifier Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Compound Acetyl-Deoxynivalenol < 50 < 50 < 50 < 50 < 50 Aflatoxin_B1 Ω < 2.5 < 2.5 < 2.5 < 2.5 < 2.5 Aflatoxin_B2 < 2.5 < 2.5 < 2.5 < 2.5 < 2.5 Aflatoxin_G1 < 2.5 < 2.5 < 2.5 < 2.5 < 2.5 Aflatoxin_G2 < 2.5 < 2.5 < 2.5 < 2.5 < 2.5 Aflatoxin_M1 < 2.5 < 2.5 < 2.5 < 2.5 < 2.5 Aflatoxin_M2 < 2.5 < 2.5 < 2.5 < 2.5 < 2.5 Altenuene < 50 < 50 < 50 < 50 < 50 Alternariol < 50 < 50 < 50 < 50 < 50 Alternariol_Monomethyl_Ether < 50 < 50 < 50 < 50 < 50 Beauvericin < 5 < 5 6.9 < 5 < 5 Citrinin < 50 < 50 < 50 < 50 < 50 Cyclopiazonic_Acid < 50 < 50 < 50 < 50 < 50 Cytochalasin_A < 50 < 50 < 50 < 50 < 50 Cytochalasin_B < 50 < 50 < 50 < 50 < 50 Cytochalasin_D < 50 < 50 < 50 < 50 < 50 Cytochalasin_E < 50 < 50 < 50 < 50 < 50 Cytochalasin_H < 50 < 50 < 50 < 50 < 50 Deepoxy-Deoxynivalenol < 50 < 50 < 50 < 50 < 50 Deoxynivalenol † < 50 < 50 < 50 < 50 < 50 Deoxynivalenol-3-Glucoside < 50 < 50 < 50 < 50 < 50 Diacetoxyscirpenol < 50 < 50 < 50 < 50 < 50 Emodin < 50 < 50 < 50 < 50 < 50 Enniatin_A 12.5 < 5 < 5 < 5 < 5 Enniatin_A1 7.3 < 5 < 5 < 5 < 5 Enniatin_B < 5 < 5 < 5 < 5 < 5 Enniatin_B1 < 10 < 10 < 10 < 10 < 10 Ergocornine < 25 < 25 < 25 < 25 < 25 Ergocorninine < 5 < 5 < 5 < 5 < 5 Ergocristine < 25 < 25 < 25 < 25 < 25 Ergocristinine < 5 < 5 < 5 < 5 < 5 Ergocryptine < 25 < 25 < 25 < 25 < 25 Ergocryptinine < 5 < 5 < 5 < 5 < 5 Ergometrine < 25 < 25 < 25 < 25 < 25 Ergometrinine < 5 < 5 < 5 < 5 < 5 Ergosine < 25 < 25 < 25 < 25 < 25 Ergosinine < 5 < 5 < 5 < 5 < 5 Ergotamine < 25 < 25 < 25 < 25 < 25 Ergotaminine < 5 < 5 < 5 < 5 < 5 Fumonisin_B1 § < 50 < 50 < 50 < 50 < 50 Fumonisin_B2 § < 50 < 50 < 50 < 50 < 50 Fumonisin_B3 § < 50 < 50 < 50 < 50 < 50 Ω Maximum allowed content of 5µg/kg stipulated in 2002/32/EC, † Maximum allowed content of 900 µg/kg stipulated in 2006/576/EC. § Maximum allowed content 1000 µg/kg of sum of fumonisin stipulated in 2006/576/EC.

Table S21 (continued).

Musca Sample Identifier Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Compound Fusarenon_X < 50 < 50 < 50 < 50 < 50 Fusaric_Acid < 50 < 50 < 50 < 50 < 50 Gliotoxin < 250 < 250 < 250 < 250 < 250 HT2_Toxin ♦ < 50 < 50 < 50 < 50 < 50 T2_Toxin ♦ < 50 < 50 < 50 < 50 < 50 Meleagrin < 50 < 50 < 50 < 50 < 50 Moniliformin < 50 < 50 < 50 < 50 < 50 Mycophenolic_Acid < 50 < 50 < 50 < 50 < 50 Neosolaniol < 50 < 50 < 50 < 50 < 50 Nivalenol < 50 < 50 < 50 < 50 < 50 Ochratoxin_A ψ < 25 < 25 < 25 < 25 < 25 Patulin < 250 < 250 < 250 < 250 < 250 Penicillic_Acid < 50 < 50 < 50 < 50 < 50 Penitrem_A < 50 < 50 < 50 < 50 < 50 Phomopsin_A < 50 < 50 < 50 < 50 < 50 Roquefortine_C < 5 < 5 < 5 < 5 < 5 Sterigmatocystin < 2.5 < 2.5 < 2.5 < 2.5 < 2.5 Tentoxin < 50 < 50 < 50 < 50 < 50 Wortmannin < 50 < 50 < 50 < 50 < 50 ♦ Maximum allowed content 250 µg/kg of sum of T toxins stipulated in 2013/165/EU. Ψ Maximum allowed content of 50 µg/kg stipulated in 2006/576/EC

Table S22. Results of mycotoxins screen of other larvae samples. Units reported are µg/kg.

Sample Identifier Calliphora , Calliphora , Calliphora , H.Illucens , Sample 1 Sample 2 Sample 3 Sample 1 Compound Absence of all compounds as described above in Table S21.