Ohio EPA Macroinvertebrate Taxonomic Level December 2019 Table 1. Current taxonomic keys and the level of taxonomy routinely used by the Ohio EPA in streams and rivers for various macroinvertebrate taxonomic classifications. Genera that are reasonably considered to be monotypic in Ohio are also listed. Taxon Subtaxon Taxonomic Level Taxonomic Key(ies) Species Pennak 1989, Thorp & Rogers 2016 Porifera If no gemmules are present identify to family (Spongillidae). Genus Thorp & Rogers 2016 Cnidaria monotypic genera: Cordylophora caspia and Craspedacusta sowerbii Platyhelminthes Class (Turbellaria) Thorp & Rogers 2016 Nemertea Phylum (Nemertea) Thorp & Rogers 2016 Phylum (Nematomorpha) Thorp & Rogers 2016 Nematomorpha Paragordius varius monotypic genus Thorp & Rogers 2016 Genus Thorp & Rogers 2016 Ectoprocta monotypic genera: Cristatella mucedo, Hyalinella punctata, Lophopodella carteri, Paludicella articulata, Pectinatella magnifica, Pottsiella erecta Entoprocta Urnatella gracilis monotypic genus Thorp & Rogers 2016 Polychaeta Class (Polychaeta) Thorp & Rogers 2016 Annelida Oligochaeta Subclass (Oligochaeta) Thorp & Rogers 2016 Hirudinida Species Klemm 1982, Klemm et al. 2015 Anostraca Species Thorp & Rogers 2016 Species (Lynceus Laevicaudata Thorp & Rogers 2016 brachyurus) Spinicaudata Genus Thorp & Rogers 2016 Williams 1972, Thorp & Rogers Isopoda Genus 2016 Holsinger 1972, Thorp & Rogers Amphipoda Genus 2016 Gammaridae: Gammarus Species Holsinger 1972 Crustacea monotypic genera: Apocorophium lacustre, Echinogammarus ischnus, Synurella dentata Species (Taphromysis Mysida Thorp & Rogers 2016 louisianae) Crocker & Barr 1968; Jezerinac 1993, 1995; Jezerinac & Thoma 1984; Taylor 2000; Thoma et al. Cambaridae Species 2005; Thoma & Stocker 2009; Crandall & De Grave 2017; Glon et al. 2018 Species (Palaemon Pennak 1989, Palaemonidae kadiakensis) Thorp & Rogers 2016 1 Ohio EPA Macroinvertebrate Taxonomic Level December 2019 Taxon Subtaxon Taxonomic Level Taxonomic Key(ies) Informal grouping of the Arachnida Hydrachnidia Smith 2001 water mites Genus Morse et al. 2017 Baetidae: Acerpenna, Baetis, Species Morse et al. 2017 Heterocloeon, Plauditus Morse et al. 2017, Webb & Baetidae: Acentrella Species Burian 2017 Baetidae: Anafroptilum Species Klubertanz 2016 McCafferty & Waltz 1995, Baetidae: Labiobaetis Species Morse et al. 2017 Baetidae: Paracloeodes Species Bolton 2010, Morse et al. 2017 Indicate if the taxa have Baetidae: Procloeon hind wing pads or not. Baetidae: Procloeon Species Morse et al. 2017 viridoculare Heptageniidae: Heptagenia Species Burks 1953, Mayfly Central 2019 Ephemeroptera Bednarik & McCafferty 1979, Heptageniidae: Maccaffertium Species Morse et al. 2017 Specimens ≤3 mm may not have their gill shape sufficiently developed to separate genera, specifically Leptophlebia and Leptophlebiidae Paraleptophlebia. Identify these specimens as: small Leptophlebiidae. Ephemerellidae: Dannella Allen & Edmunds 1962, Morse Species simplex et al. 2017 Caenidae: Brachycercinae Species Morse et al. 2017 Pescador & Berner 1981, Morse Baetiscidae: Baetisca Species et al. 2017 Ephemeroidea: Ephemera, McCafferty 1975, Morse et al. Species Ephoron 2017 monotypic genera: Cloeon dipterum, Diphetor hageni, Iswaeon anoka, Stenonema femoratum, Choroterpes basalis, Habrophlebia vibrans, Teloganopsis deficiens, Litobrancha recurvata Merritt et al. 2019, Needham et Genus al. 2010, Tennessen 2019 Coenagrionidae (except Argia) Family Merritt et al. 2019 Anisoptera: Boyeria, Lanthus, Needham et al. 2000, Tennessen Odonata Species Neurocordulia 2019 Gomphidae: Gomphurus, Gomphus complex Ware et al. 2016 Phanogomphus 2 Ohio EPA Macroinvertebrate Taxonomic Level December 2019 Taxon Subtaxon Taxonomic Level Taxonomic Key(ies) monotypic genera: Archilestes grandis, Basiaeschna janata, Epiaeschna heros, Nasiaeschna Odonata (continued) pentacantha, Hagenius brevistylus, Progomphus obscurus, Stylogomphus albistylus, Didymops transversa, Helocordulia uhleri, Erythemis simplicicollis, Pachydiplax longipennis, Perithemis tenera, Plathemis lydia Stewart & Stark 2002, Merritt et Genus al. 2019 Perlidae: Acroneuria, Hitchcock 1974, Morse et al. Species Paragnetina 2017 Poulton & Stewart 1991, Morse Perlidae: Agnetina Species et al. 2017 Perlidae: Perlinella Species Poulton & Stewart 1991 Plecoptera Frison 1942, Hitchcock 1974, Perlodidae: Isoperla Species Poulton & Stewart 1991, Morse et al. 2017 Perlodidae: Diploperla Species Kondratieff et al. 1981 Perlodidae: Malirekus Species Stewart & Stark 2002 monotypic genera: Nemoura trispinosa, Paraleuctra sara, Eccoptura xanthenes, Clioperla clio, Haploperla brevis Belostomatidae, Naucoridae, Nepidae, Pleidae, Genus Merritt et al. 2019 Notonectidae Hemiptera Hilsenhoff 1995, Merritt et al. Corixidae Genus 2019 monotypic genus: Nepa apiculata Genus Merritt et al. 2019 Corydalidae: Chauliodes Species Rasmussen & Pescador 2002 Megaloptera Neunzig 1966, Rasmussen & Corydalidae: Nigronia Species Pescador 2002 monotypic genus: Corydalus cornutus Rasmussen & Pescador 2002, Neuroptera Genus Merritt et al. 2019 Wiggins 1996, Merritt et al. Genus 2019, Morse et al. 2017 Philopotamidae Species Ross 1944 Hydropsychidae: Diplectrona Species Wiggins 1996 Trichoptera Schuster & Etnier 1978, Schefter Hydropsychidae: Ceratopsyche Species & Wiggins 1986, Morse et al. 2017 Schuster & Etnier 1978, Morse Hydropsychidae: Hydropsyche Species et al. 2017 3 Ohio EPA Macroinvertebrate Taxonomic Level December 2019 Taxon Subtaxon Taxonomic Level Taxonomic Key(ies) Hydropsychidae: Species Ross 1944, Morse et al. 2017 Macrostemum Hydropsychidae: Parapsyche Species Flint 1961, Morse et al. 2017 Prather and Morse 2001, Morse Rhyacophilidae: Rhyacophila Species et al. 2017 Phryganeidae: Oligostomis Species Lloyd 1921 Brachycentridae: Species Flint 1984, Morse et al. 2017 Brachycentrus Parker & Wiggins 1987, Morse Odontoceridae: Psilotreta Species Trichoptera (continued) et al. 2017 Leptoceridae: Ceraclea Species Resh 1976, Morse et al. 2017 Glover & Floyd 2004, Morse et Leptoceridae: Nectopsyche Species al. 2017 Leptoceridae: Oecetis Species Floyd 1995, Morse et al. 2017 Leptoceridae: Triaenodes Species Glover 1996, Morse et al. 2017 monotypic genera: Dolophilodes distinctus, Lype diversa, Psychomyia flavida, Cyrnellus fraternus, Potamyia flava, Leucotrichia pictipes, Mayatrichia ayama, Fabria inornata, Hydatophylax argus, Helicopsyche borealis, Leptocerus americanus Lepidoptera Crambidae Genus Merritt et al. 2019 Gyrinidae, Haliplidae, Dytiscidae, Noteridae, Hilsenhoff 1995, Merritt et al. Hydrophilidae, Psephenidae, Genus 2019 Dryopidae, Elmidae, Ptilodactylidae, Lutrochidae Dytiscidae: Hydroporini Tribe (Hydroporini) Merritt et al. 2019 Scirtidae Family Merritt et al. 2019 Coleoptera Elmidae: Dubiraphia (except D. Species (adults only) Hilsenhoff 1973 vittata group) Elmidae: Optioservus Species (adults only) White 1978 Downie & Arnett 1996, Epler Elmidae: Oulimnius Species (adults only) 2010 monotypic genera: Agabetes acuductus, Helocombus bifidus, Sperchopsis tesselata, Dicranopselaphus variegata, Psephenus herricki, Ancyronyx variegatus, Macronychus glabratus, Microcylloepus pusillus, Lutrochus laticeps, Anchytarsus bicolor Diptera McAlpine et al. 1981, Merritt et Genus al. 2019 4 Ohio EPA Macroinvertebrate Taxonomic Level December 2019 Taxon Subtaxon Taxonomic Level Taxonomic Key(ies) Ceratopogonidae (except Atrichopogon, Forcipomyia), Dolichopodidae, Syrphidae (except Eristalis, Chrysogaster), Family Merritt et al. 2019 Sciomyzidae, Ephydridae (except Ephydra, Hydrellia, Ochthera, Setacera) Tipulidae: Tipula abdominalis Species Gelhaus 1986 Psychodidae: Pericoma albitarsis, Telmatoscopus Species Johannsen 1934-1937 albipunctatus Ceratopogonidae: Species Johannsen 1934-1937 Atrichopogon Bolton 2012, Andersen et al. Chironomidae Genus/Species1 2013, Epler 2001, 2014 Diptera (continued) Chironomidae: Eukiefferiella, Species group Bode 1983 Tvetenia Chironomidae: Paracladopelma Species Jackson 1977 Muscidae: Limnophora, Species Johannsen 1934-1937 Lispoides monotypic genera: Protoplasa fitchii, Bittacomorpha clavipes, Protothaumalea americana, Apsectrotanypus johnsoni, Brundiniella eumorpha, Clinotanypus pinguis, Nilotanypus fimbriatus, Radotanypus florens, Telopelopia okoboji, Trissopelopia ogemawi, Pagastia orthogonia, Prodiamesa olivacea, Diplocladius cultriger, Doncricotopus bicaudatus, Psilometriocnemus triannulatus, Xylotopus par, Endotribelos hesperium, Gillotia alboviridis, Hyporhygma quadripunctatum, Kribiodorum perpulchrum, Lauterborniella agrayloides, Paralauterborniella nigrohalteralis, Xenochironomus xenolabis, Zavreliella marmorata, Neostempellina reissi, Sublettea coffmani, Zavrelia aristata, Chlorotabanus crepuscularis, Atherix lantha, Lispoides aequifrons Burch 1982, Thorp & Rogers Gastropoda Genus/Species1 2016 Gastropoda: Hydrobiidae Family Burch 1982 Species (Corbicula Bivalvia: Corbiculidae Burch 1972, Smith 2001 Mollusca fluminea) Bivalvia: Dreisseniidae Species Benson et al. 2014 Bivalvia: Sphaeriidae Genus Burch 1972, Smith 2001 Watters et al. 2009, Williams et Bivalvia: Unionidae Species al. 2017 1 After the specimen is identified to genus check the most recent edition of the Ohio EPA Macroinvertebrate Taxa List (located on the Ohio EPA website at: http://epa.ohio.gov/dsw/bioassess/BioCriteriaProtAqLife.aspx ) to see if it should be identified further. 5 Ohio EPA Macroinvertebrate Taxonomic Level December 2019 References Allen, R.K. and G.F. Edmunds. 1962. A revision of the genus Ephemerella (Ephemeroptera: Ephemerellidae).