

Only fore tibia black 2 



Cheeks narrow, about 1/5 height of head; face narrow, 

 evenly convex, not prominent in profile; southern Cali- 

 fornia glaphyropus Loew 1878 



Cheeks broader; face broader, about 1/3 width of head, 

 subgibbously prominent in profile; southern and central 

 California melanderi (Cresson) 1922 



Tribe ATISSINI 



Genus Glenanthe Haliday 



litorea Cresson 1925. Imperial County 



Genus Hecamede Haliday 



Bohart and Gressitt (1951) figured the puparium of 

 Hecamede persimilis Hendel, which they found abun- 

 dant on the beaches on Guam and breeding in the 

 sand under a human carcass. Not known to occur in 

 California. 



Genus P elignellus Sturtevant and Wheeler 

 subnudus Sturtevant and Wheeler 1954. Orange County 



Genus Asmeringa Becker 



lindsleyi Sturtevant and San Bernardino County 



Wheeler 1954. 



467 

 Wirth and Stone: Diptera 



to scute Hum then they are to each other; Inyo, Mono, 



San Bernardino, and San Mateo counties 



alkalinella (Cresson) 1942 



Genus Pseudohecamede Hendel 

 (Fig. 14:55i) 



abdominalis (Williston) 1896. 



Riverside County 



Genus Alio trichoma Becker 



Bohart and Gressitt (1951) found a species of Allo- 

 trichoma, apparently livens Cresson, breeding abun- 

 dantly in pig droppings in muddy pens on Guam and 

 figured the puparium. 



Key to Adults of the California Species of Al lotrichoma 



1. Clypeus shining black, contrasting with the pruinose 

 face; California yosemite Cresson 1926 



— Clypeus pollinose, opaque, not contrasting with the 

 face 2 



2. Male with genital appendages rather spatulate and 

 ciliate on their full length from bases; southern and 

 central California lateralis (Loew) 1860 



— Male with genital appendages more or less setiform, 

 with or without dilated tips 3 



3. Genital appendages of male with 3 short bristles at 

 tips; Riverside County trispina Becker 1896 



— Genital appendages of male with about 10 long bristles 

 at tips; California simplex (Loew) 1861 



Key to Adults of the California Species of Atissa 



1. Mesonotal setulae in 6 series between the intra-alars; 

 dark brown species (fig. 14:54d,e); southern and central 



California litoralis (Cole) 1912 



— Mesonotal setulae in 4 series; whitish pruinose species; 

 antennae and legs yellow; southern California .... 

 pygmaea (Haliday) 1833 



Key to Adults of the California Species of 



■ ti lomy ia 



(Fig. 14:551) 



1. Prominent bristles present at about sutural level in 

 both dorsocentral and median acrostichal rows; abdomen 

 shining black; Kern County enigma Coquillett 1900 



— Sutural bristles absent in dorsocentral and acrostichal 

 series; abdomen pollinose 2 



2. Cheeks distinctly broader than width of 3rd antennal 

 segment; face uniformly grayish white pollinose; San 

 Bernardino and Inyo counties 



occidentalis Sturtevant and Wheeler 1954 



— Cheeks narrower than width of 3rd antennal segment; 

 face grayish to brownish 3 



3. Facial series with but 1 ventrally inclined seta; 2nd 

 costal section subequal to 3rd; prescutellars about as 

 far from each other as from scutellum; Imperial, River- 

 side, and San Bernardino counties 



pleuriseta (Cresson) 1942 



— Facial series with 2 such setae; 2nd costal section 

 distinctly longer than 3rd; prescutellars usually closer 



Tribe DISCOCERININI 



Key to Adults of the Californi 

 Polytrichophora 



Speci 



of 



Fore femur with an anteroflexor comb of minute spinules 

 and a few setae on postflexor margin; Alameda, Marin, 



and Orange counties conciliata Cresson 1924 



Fore femur without anteroflexor comb, but with a series 

 of several stout postflexor spines; southern and central 

 California orbitalis (Loew) 1861 



Genus Hecamedoides Hendel 



glaucella (Stenhammar) 1843. 



Kern, Mono 



Key to Adults of the California Specie.s of 

 D itrichophora 



1. Frons with 2 orbitals; frons and mesonotum brown 

 pollinose 2 



— Frons with 1 orbital 3 



2. Tarsi yellowish; Del Norte and San Mateo counties 

 cana Cresson 1940 



— Tarsi black; Shasta County lugubris Cresson 1940 



3. Shining black species; notopleura especially polished; 

 legs yellowish; face pale yellow to gray pollinose; 

 California argyrostoma (Cresson) 1916 



— Mesonotum and frons dull pollinose black; legs black 



4 



