FUNGUS GNATS OF NORTH AMERICA. II3 



bb. Wing venation complete, no detached veins. i. Bugnoristc- 



aa. Proboscis not greatly prolonged. 



b. Wing venation defective, several veins detached at base. 



2. Manota. 

 bb. Wings when present with complete venation, no detached veins, 

 c. Female wingless, in the male the media springs from the 

 radius at an angle, the crossvein being obsolete (Fig. 264). 



3. Pnyxia n. g. 

 cc. Both sexes with wings ; crossvein present. 



d. Wings very distinctly hairy; claws not denticulate. 



4. Trichosla. 

 dd. Wings with microscopic setulse but not hairy. 



e. Antennal joints of the male pedicillate and with whorls 

 of hair ; forks of media arcuate. 5. Zygoneura. 



ee. Antennal joints bare or with short hairs. 



f; Forks of media arcuate, and claws toothed. 



6. Metangela. 

 f f. Forks of media not arcuate, or if so, claws not toothed, 

 g. Claws toothed. 7. Phorodonfa. 



gg. Claws not toothed. 



h. Face strongly produced. 8. Rhynchosciara. 



hh. Face not produced. ' 9. Sciara. 



I. Genus Bugnoriste Coquillett. 



Proc. Wash. Ent. Soc. Ill, 321, 1896. 

 Head, small, antennae filiform, pubescent, i6-jointed; pro 

 boscis rigid, filiform, directed downward and backward, longer 

 than the head, palpi 4-jointed, the first joint very short; 3 

 ocelli ; eyes deeply emarginate. Wings bare, venation like 

 Sciara (Fig. 253). Entire insect Sciara-like in appearance 

 except for the elongate proboscis. Structure of eyes as in 

 Sciara. 



Tabic of Species. 



a. Proboscis longer than the head and thorax. i. occidental's. 



aa. Proboscis slightly longer than the head, slender, horny. 



f 2. brevirostris. 



I. Bugnoriste occidcntalis Coquillett. 



Proc. Wash. Ent. Soc. Ill, 321, 1896. 

 Male and Female. Length 2.5 to 3 mm. Head and thorax 

 black, subshining, antennae, proboscis, palpi and halteres black- 

 ish brown, abdomen dark brown ; coxae and legs yellowish to 

 brownish, tarsi darker; hypopygium (Fig. 138). Wings hya- 



