144 



GUIDE TO CALIFORNIA INSECTS. 



8YRPHINA 



The larvae of these wasplike flies are parasitic on Hymenoptera. 



CONOPID>E. 



baroni Wil. 

 loraria Lew. 

 Physocephala affinis Wil. 



burgessi Wil. 

 Zodion fulvifrons Say. 

 triste Big. 



Dalmannia picta Wil. 



vitiosa Coq. 

 Myopa conjuncta Thorn. 



pictipennis Wil. 



pilosa Wil. 

 Oncomyia abbreviata Loew 



SYRPHID/E. 



The syrphus flies feed as larvag in decaying vegetation and those of the 

 genus Syrphus and its allies feed on plantlice. 



Allograpta fracta O.S. 



obliqua Say. 

 Ascemosyrphus mexicanus Macq. 



oculierus — mexicanus. 



baptista — clavata. 



clavata. Fabr. 



lemur O.S. 



obscuricornis Loew. 

 Barachopa vacua O.S. 

 Brachymyia lupina — Criorhina. 



nigripes — Criorhina. 

 Catabomba pyrastri — Lasiophthicus. 

 Cerea tridens Loew. 

 Chilosia baroni Wil. 



chalybescens Wil. 



occidentalis Wil. 



pacifica Hun. 



pallipes Loew. 



townsendi Hun. 



wiilistonii Snow. 

 Chrysochlamys crcesus O.S. 

 Chrysogaster bellula Wil. 



nigrovittata Loew. 



stigma Wil. 

 Chrysotoxum derivatum Walk. 



villosum — derivatum. 

 Copestylum marginatum Say. 

 Criorhina coquilletti Wil. 



humeralis Wil. 



lupina Wil. 



nigripes Wil. 

 Crioprora alpex O.S. 



cyanella O.S. 

 Didea laxa Fabr. 

 Eristalis asneus Fabr. 



hirtus Loevi/. 



latifrons Loew. 



stipulator — latifrons. 



temporalis Thorn. 



tenax Linn. 

 Eurhinomamallota lupina — Criorhina. 



metalica — Criorhina lupina. 



nigripes — Criorhina. 

 Eupseodes volucris O.S. 

 Helophilus latifrons Loew. 



mexicanus — Ascemosyrphus. 

 ' polygrammus — Ascemosyrphus 



mexicanus. 



simiiis Macq. 

 Mesogramma gemmata Say. 



marginata Say. 

 Mesograpta marginata — Mesogramma. 

 Microdon xanthophilis Town. 

 Musca pipiens — Syritta. 



ribesii — Syrphus. 



tenax — Eristalis. 

 Myolepta varipes Loew. 

 Ischgrosyrphus tricolor — Syrphus vel- 



utinus. 

 Lasiophthicus pyrastri Linn. 

 Mallota sackeni Wil. 

 Melanostoma bicruciatum Big. 



pachytarsis Big. 



p.ctipes Big. 



stegnum Say. 

 Nausigaster punctulata Wil. 

 Orthoneura nigrovitta — Chrysogaster- 



sinuosa — Chrysogaster stigmata. 

 Paragus angustus Loew. 



auricaudus — Paragus tibial iss. 



bicoloi' Fabr. 



pisticodes Wil. 



tibialis Kail. 

 Pipiza auricaudatus — Paragus tibialis. 



