148 Journal New York Entomological Society. f^oi. xx. 



Oligotrophus betheli, new species. 



Gall. — Length 7 mm., brown, fleshy, conical and containing an orange 

 or yellowish larva in a central cavity some 3 mm. long. 



Female. — Length 1.5 mm. Antennse hardly extending to the base of the 

 abdomen, sparsely haired, pale yellowish, variably tinged with red; 14 sessile 

 segments, the fifth with a length one half greater than its diameter and with 

 a basal whorl of moderately long, stout spines ; terminal segment slightly 

 produced, with a length nearly twice its diameter. Palpi ; first segment sub- 

 globose, the second narrowly oval, with a length about twice its diameter, 

 the third about three fourths the length of the second, narrowly oval. Meso- 

 notum yellowish orange, variably tinged with reddish. Scutellum yellowish 

 orange, postscutellum reddish orange. Abdomen deep red, the distal seg- 

 ments yellowish. Wings hyaline, costa light straw. Halteres yellowish basally, 

 slightly fuscous apically. Coxae pale yellowish, femora and tibiae fuscous, 

 the yellowish tarsi a variable fuscous, the posterior tarsi somewhat lighter. 

 Claws slender, simple, the pulvilli distinctly longer than the claws. Ovipositor 

 short, stout, the terminal lobes broadly oval and sparsely setose. 



Male. — Length 1.5 mm. Antennae with 14 segments, the fifth probably 

 subsessile and with a length about twice its diameter. Genitalia; basal clasp 

 segment short, stout ; terminal clasp segment moderately long, stout, slightly 

 curved. Other characters indistinct. Described from a nearly matured fly in 

 the puparial envelope. 



Exuvise whitish transparent, antennal sheaths short, stout ; wing pads 

 short, stout, the leg cases extending to the third abdominal segment. Typi 

 Cecid a2303. 



This species was reared June 25. 1912, from a fleshy, apical, 

 conical gall on Juniper us utahcnsis collected by Prof. E. Bethel at 

 McCoy, Col., June 18. The relatively longer antennal segments and 

 the much lighter color differentiate this species from 0. bctulce Winn. 



Janetiella coloradensis, new species. 



Gall. — Length 4 to 5 mm., diameter 3 mm. This is a more or less regular, 

 oval swelling at the base of the needles, containing near the center, a smooth, 

 oval cell some 3 mm. long. 



Larva (dried). — Length i mm., broadly oval, yellowish orange. Head 

 broad, moderately well chitinized. Antennae tapering, uniarticulate. Skin 

 smooth. Breastbone indistinct. 



Female. — Length 1.5 mm. Antennae extending to the second abdominal 

 segment, sparsely haired, probably light brown; 16 sessile segments, the fifth 

 cylindric, with a length 2^ times its diameter and with a sparse whorl of short 

 hairs subbasally and near the middle ; terminal segment reduced, broadly oval. 

 Palpi ; first and second segments stout, subglobose, the third slender, with a 

 length five times its width, the fourth three fourths the length of the third, 

 somewhat dilated. Mesonotum brownish black, the submedian lines sparsely 



