FUNGUS GNATS OF NORTH AMERICA. 'J'] 



scutellar set^e brown. Abdomen fulvous, shining, each segment 

 with a brown triangular "saddle," broadest posteriorly, indis- 

 tinctly divided along the median line; hypopygium shining 

 fulvous, prominent, superior claspers slender, curved, each with 

 curved black spine at the tip and a long stout subapical seta. 

 Coxae and legs yellow, tarsi darker, hind tibi^ each with 2 

 ranges of setae. Wings yellow hyaline, veins fulvous (Fig. 

 215). Kearney, Ont., (M. C. Van Duzee), July. 



28. Genus Opistholoha Mik. 



Wien. Ent. Zeit. X. 87, 1891. 

 Ocelli three,. laterals contiguous to the eye margin, middle 

 one very minute ; hypopygium very large and conspicuous, much 

 broader than the abdominal segments, husk-like (Fig. 60). 

 Ventral posterior margin of the sixth abdominal segment in the 

 female provided with a row of long setae which project beyond 

 the tip of the abdomen. In other respects like Mycetophila. 



Opistlioloba ocellata Johannsen. 



Genera Insectorum, Fasc. 93, 126. 1909. 



Male. Length 3 mm. Head shining black, antennae fuscous, 

 4 or 5 basal joints and the palpi yellow. Thorax and abdomen 

 deep brown or black ; large quadrangular spot on each humerus, 

 a minute spot on each posterior angle of the mesonotum, and 

 the large hypopygium, yellow. Hypopygium when seen from 

 the side, subtriangular, folded under the abdomen, nearly 

 reaching the middle of the fourth abdominal segment (Fig. 60. 

 See also pi. 7, fig. 18, Genera Insectorum, Fasc. 93). 



Coxae and legs yellow, the tarsi slightly darker, tips of hind 

 femora blackish ; middle tibiae each with one short and two long 

 setae on the flexor surface. Wings grayish hyaline, with a 

 central spot and a short preapical fascia, cubitus forks slightly 

 proximad of the fork of the media (Fig. 185). Halteres yel- 

 low. Ithaca, N. Y. May. Aug. 



29. Genus Bpicypta Winnertz. 



Verb. Zool-bot. Ges. Wien. XIII. 909, 1863. 

 Head round, flattened in front, the anterior margin of the 

 thorax produced over it; front broad, its anterior margin pro- 



