12 



U.S. NATIONAL MUSEUM BULLETIN 256 



INSECTS — Continued 

 Diptera: Lonchaeidae 



Dasiops Rondani 



sal tana (Townsend) 



Lonchaea Fall6n 



alexanderi Br^thes 



Hymenoptera: Ghalcididae 



Rileya Ashmead 

 opuntiae Gahan 



INSECTS — Continued 

 Hymenoptera: Ghalcididae — Gont. 

 Torymus Dalman (=GaIlimome 

 Spinola) 

 bifasciipennis (Gahan) 



MITES 



Acarina: Tetranychidae 

 Tetranychus Dufour 

 opuntiae Banks 



Acarina: Eriophyidae 



Eriophyes Von Siebold, sp. 



Scavengers Feeding on Cactus 



Diptera: Syrphidae 



Gopestylum Macquart 



marginatum Say 

 Volucella Geoffrey 

 avida Osten-Sacken 

 deceptor (Curran) 

 esuriens Fabricius 

 eugenia Willis ton 

 fasciata Macquart 

 fornax Townsend 

 fraudulenta Williston 

 pusilla Macquart 



Diptera: Syrphide — Gont. 



Volucella Geoffrey — Continued 

 satur Osten-Sacken 

 scutellata Meigen 

 spinigera Wiedemann 



Diptera: Stratiomyiidae 

 Hermetia Latreille 

 aurata Bellardi (== 



chrysophila (Loew)) 

 illucens Linnaeus 

 hunteri Goquillett 



Predators on Dactylopius Species 



Lepidoptera: Phycitidae 



Laetilia coccidivora Gomstock 



(=Zophodia dilatifasciella 



Ragonot) 

 Laetilia coccidivora quadri- 



colorella (Dyar) 



(=Valdivia quadricolorella 



Dyar) 

 Salambona analamprella (Dyar) 



Goleoptera: Coccinellidae 

 Gybocephalus nigritulus 



Le Conte 

 Gryptolaemus montrouzieri 



Mulsant 

 Hyperaspis trilurcata Schaeffer 



Goleoptera: Coccinellidae — Gont. 

 Hyperaspis fimbriolata 



Melsheimer 

 Scymnus hornii Gorham 

 Scymnus intrusus Horn 



Diptera: Syrphidae 

 Baccha Fabricius 

 Salpinogaster conopida 



(Philippi) (=nigriventris 

 Bigot) 



Diptera: Agromyzidae 



Leucopis bellula Williston 



Neuroptera: Hemerobiidae 



Sympherobius amiculus Fitch 



