REPORT OF THE STATE ENTOMOLOGIST I915 53 



lowish transparent. Legs a pale straw, the pul villi a little longer 

 than the long, slender claws, the latter with a long, slender tooth 

 basally. Genitalia; basal clasp segment moderately long, stout; 

 terminal clasp segment short, stout, with a distinct spur; dorsal 

 plate short, deeply and roundly emarginate, the lobes short, broad, 

 obliquely truncate apically; ventral plate short, deeply and roundly 

 emarginate, the lobes rather long and tapering to a narrowly rounded 

 apex. 



Female. Length 1.75 mm. Antennae extending to the third 

 abdominal segment, sparsely haired, fuscous yellowish; 16 or 17 

 segments, the fifth with a stem about one-third the length of the 

 cylindric basal enlargement, which latter has a length a little over 

 twice its diameter; terminal segment reduced, sometimes compound 

 and tapering to a narrowly rounded apex. Palpi; the first segment 

 subquadrate, the second subconical and with a length a little greater 

 than the first. Mesonotum fuscous brown, the submedian lines, 

 the posterior median area, the scutellum and post scutellum mostly 

 fuscous yellowish, the apex of the scutellum narrowly fuscous. 

 Abdomen reddish orange, apically fuscous yellowish, the ovipositor 

 about one-half the length of the body; terminal lobes short, broad, 

 broadly rounded and sparsely setose apically. Other characters 

 practically as in the male. 



Life history. This insect, like allied greenhouse species, probably 

 breeds continuously when conditions are favorable and presumably 

 displays a marked preference for buds or tissues just unfolding from 

 the buds. The transformations of this midge occur within the gall 

 and it is probable that hibernation or aestivation may take place 

 either in the adult or possibly as larvae in slowly developing, sub- 

 terranean, presumably root stalk galls. 



April 13, 191 5 a number of infested plants were received from 

 Michigan, a few midges emerged the following day and others were 

 observed in the cages from day to day until the 26th. April 27th 

 several males and females were put on a clean plant at about 10 a.m., 

 and at 2.35 p.m. two females were observed investigating various 

 leaves; one appeared to be much agitated and repeatedly thrust 

 her long, slender ovipositor among the leaf hairs along the surface 

 of the leaf. An examination of this leaf under a three-fourths 

 inch compound objective revealed an elongate, oval, pale orange 

 egg lying on the surface, almost horizontally and nearly completely 

 hidden by the overlying leaf hairs. One female found dead in a 

 cage had attached to her a string of extruded eggs, there being over 

 forty and possibly nearly fifty, and on examination under a high 

 power, streaming movements were observed in certain of the eggs, 

 which lead us to believe that the egg stage is probably twenty-four 

 hours or less. Owing to unfavorable conditions it was not possible 

 to carry the insect through a life cycle, though the probabilities are 



