REPORT OF THE STATE ENTOMOLOGIST I916 21 5 



reared in May 1914 by Mr P. H. Timberlake from some swollen 

 leaves of Chrysothamnus graveolens, collected at 

 Salt Lake City, Utah. 



Gall. The narrow leaflet is slightly enlarged or swollen, and 

 in the specimen submitted by Professor Cockerell, the interior 

 was lined with a thin, carbonaceous matter similar to that found 

 so abundant in the gall of Asteromyia carbonifera 

 Felt. Length of gall 5 mm, diameter 1 mm. 



Male. Length 1.5 mm. Antennae dark brown, 16 or 17 segments, 

 the fifth with a length about equal, sometimes a little greater or 

 a little less than its diameter, the terminal segment with a length 

 over twice its diameter, narrowly rounded and variably fused with 

 the penultimate segment. Palpus consisting of one broadly oval 

 segment, the length being scarcely twice its width. Mesonotum 

 rather dull dark brown, sparsely setose, the submedian lines indistinct. 

 Scutellum dark brown, postscutellum a little darker. Abdomen 

 sparsely haired, a nearly uniform yellowish brown. (Timberlake 

 characterizes the mesonotum as black and the dorsum of the abdomen 

 as black, with submedian white marks on the posterior margin 

 of each segment, except the last two, which latter are white; venter 

 suffused with white). Wings hyaline, the third vein uniting with 

 costa just be^^ond the basal half; halteres yellowish, (costa and 

 subcosta yellowish, Timberlake). Legs a nearly uniform yellowish 

 brown, the tarsal segments somewhat lighter. (Timberlake char- 

 acterizes the legs as brownish black, becoming gradually paler or 

 more yellowish distally; coxae, femora, tibiae and first two tarsal 

 segments covered with white scales, especially on the upper side) . 

 Claws stout, strongly curved; the pulvilli as long as the claws. 

 Genitalia; basal clasp segment long, slender; terminal clasp segment 

 swollen basally; dorsal plate short, very broadly, roundly and 

 triangularly emarginate; ventral plate short, broadly rounded. 



Female. Very similar (Timberlake) in coloration to the male, 

 but the submedian white markings are slightly wider next the black 

 median line. Ovipositor short, stout, with a length about one-third 

 that of the abdomen, the terminal lobes orbicular and sparsely 

 setose. Type Cecid. a2055, Cecid. 1640. 



This species approaches Aplonyx with the greatly reduced basal 

 teeth on the tarsal claws and also on account of the short, stout 

 ovipositor. 



Asteromyia nigrina Felt 



1911 Felt, E. P. Econ. Ent. Jour., 4:481 



The fuscous species described earlier was reared in May 1909 from 

 a jar containing inconspicuous blister galls on the leaves of witch- 

 hazel, Hamamelis virginica. The material was col- 

 ected at Magnolia, Mass., the preceding October by Cora H. Clarke. 

 It is possible that this unique form inhabits these blister galls though 



