ENTOMOLOGICAL SOCIETY OF BRITISH COLUMBIA, PROc. (1 956 ) , VOL. 53, FEB. 15, 1957 39

Sarcophaga (Acridiopbaga ) falciform is Ald. Plagiprospherysa parvipalpis (Wlp.) Sanopbaga (Boellcberia) cimbicis (Tns.) T acbinomyia apicala Cn. Sarcophaga (Boellcheria) latiJterna (Park.) Tachinomyia nigricans ·Webb. Sarcophaga (Fletcherimyia) fleJcheri Ald. T achinom,ria variala Cn. Sarcophaga (Kellymyia) k ellyi Ald. Goniinae Sarcopbaga (Protodexia) bunleri Hough. Aehaetoneura frenehii (Will.) Sarcophaga (Sapromyia) cooleyi Park. Aplomya tbee/arum (Scudd.) Sarcophaga (Sarcopbaga) exubercms Pand. Belvosia canadensis Cn. Sarcophaga (Sarcophaga ) nearctica Park. Careelia reciinata (A. & W.) Sarcophaf!.a (Sarcolachinella ) sinuala Mg. Cyzenis jestinans (A. & W.) Sarcophaga (Tephromyiella ) atlantis Ald. D olichotarsus griseus Brks. Sarcophaga (Thelylepticocnema) ineltrlJa Ald. Euexorista jUlilis (O.s.) ~liltogramminae Eujronlina speclabi/is (Ald.) Euhilarella / ulvicornis (Coq.) Eumea caesar (Ald.) Euhilarella pilosijrons (All en) Gonia (Knabia ) fronlosa (Say) Euselenomyia Irilineata (WIn.) Huebneria imitalor (Sell.) M elopia leucocephala Rossi LeschenauiJia (Ri/eymyia) americana B. & B. Paramelopia laleralis (Macq.) Lydella nivrila (Tns.) Taxigramma heleroneura (Mg.) Madremyia saundersii (Will.) Nemorilla pysle (Wlk.) Cuterebridae Phrrxe pecosensis (Tns.) CUlerebra leneb rosa Coq. Pseudoperichaeta ereCla (Coq.) Larvaevoridae Winthemia militaris (WIsh.) Winlbemia rujonotala (Big.) Phasiinae C)·Iindromyia ealijomiea Big. L arvaevorinae GymnoclYlia occidenlale 'Ins. Archylas (Nemochaela ) lateralis (Macq.) H emyda aurala Desv. .l{rg enloepalpus rufipes Brks. Leueosloma (Paradionaea ) atfa T ns. Argentoepalpus signijerus (\\llk. ) NeoCl'liIera d(lSiades (Wlk.) Bombyliom)'ia flavipalpia (Macq.) Paraphasia niJi ra Brks. Cuphocera (Deopalpus) cOnligua Rnh. Rhodogyne filiola (Lw.) Ernestia (Pseudomeriania) nigrocornes (Toth.) Seiasma neb ulosa Coq. nigra Cn. Elltrichogena polita Brks. Dexiinae Fabrieiella (Fabriciodes ) polisa Toth. M ochlosoma valid/wz B. & B. Fabriciella (Melapolachina) brevirostris Toth. Plilodexia neotibialis (West) Fabriciella (Metapolachina) latifacies Toth. Rhamphinina ,'on/usa W est Fabriciella (Nowiekia ) hispida Toth. Troehilodes skinneria Coq. Fabrieiella (Rhachogasler) algens (W d.) Phoroceratinae Fabriciella ( U podemoeera) nitida (Wlp.) Admonlia (Xenadmonlia) degeefOid(s (Coq.) Lypha sp. Bessa harveyi ('Ins.) Mericia nigropalpis (Toth.) Croeula sp. (=Siphona auCII.) M etopomusco pleryx libialis (Coq.) Cryplomeigenia nigripilosa Cn. Neolhelaira ehaeloneura (Coq.) D exod es nana Cn. Pararchylas deeisa (Wlk.) ExoriSla mel/a (Wlk.) PeleJeria (Peleteriopsis ) ilerans (Wlk.) H omalaelia harringtoni (Coq.) Peleleria (SphYfOmyia ) apicalis (Wlk. ) Lasioneura bieolor (Cn.) Peleleria (Sphyromyia ) bryanli Cn. Patelloa pachypyga (A. & W.) PeleJeria (Sphyromyia ) malleola Big. Palelloa reinhardi (A. & W.) Sit!hophyJO neomexicana Tns. Phylacleropoda sp. helyma ( Wlk.)

AcI

Scavengers and Parasites from a Used Wasps' Nest In October 1955 Professor Kenneth Vespula arenaria (Fab.), a common wasp at Graham brought in from L angley an un­ the coast. usually large wasps' nest of the current During the autumn months some eight season's making a nd kept it in a glass recognizable specimens of what was appar­ chamber. The nest was deserted so it was ently Epheslia el"lell.:l (Hubner) and some not possible to determine which species of small ichneumon emerged and died in yell ow jacket constructed it; it \\'as probably the container. These were given to me by 40 ENTOMOLOGICAL SOCIETY OF BRITISH COLUMBIA, FROc. (1956 ), VOL. 53, F EB. 15, 1957

Professor Graham the following spring. acted as scavengers, feeding on the deposit Unforunately, Professor Graham needed o f wasp larval frass that is always plastered this unusually large wasp nest fo r demon­ against the base of each cell when the in­ stration purposes, so I could not cut it up sect pupates. This deposit may be from to determine the true status of the hymen­ o ne to three layers deep, depending upon opterans. how many larvae were reared in each cell, The small ichneumons were either para­ and is also fed upon by scavenging larvae sitic upon the m oth caterpillars o r were of both the black carpet beetle and a Sphecophaga burra (Cresson), a parasite of derm estid, Perimegatoma vespulae Milliron, that wasp larvae. This , when it pupates develops in both and plant remains. spins across the wasp cell a silken sheet I have found that moths invade wasps' coloured like a poached egg with a brown nests late in the season and develop in the instead of a yellow centre. The sheet upper, that is, the older comb layers. The is always slightly oblique a nd not straight ichneumon parasites usually develop in across a cell. weak colonies; o r if in strong colo nies, only From a sm'lll V espula nest taken in the at the end of the season w hen the wasp forest at 3100 ft. above Kamloops, I once population is declining. Neither m oth larvae obtained a number of small caterpillars nor ichneumons seem to be interfered with which died without pupating. By cutting up by wasps.-G. J. S tJellcer, Ullill ersity of British the nest it was found that the larvae had Columbia.

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