March. 1911.] Felt: Generic Synopsis of Itonid^. 



55 



Diadiplosis cocci, new species. 



Male— Length i mm. Antenns one half longer than the body, thickly 

 haired light brown; 14 segments, the fifth having the basal portion of the 

 stem with a length one half greater than its diameter, the distal part with a 

 length twice its diameter, the basal enlargement subglobose, with a sparse sub- 

 basil whorl of stout setje, the circumfilum with stout loops extending to the 

 base of the distal enlargement, which latter is subcylindric, has a length one 

 half greater than its diameter, a scattering whorl of stout sets and basal and 

 apical circumfili, the loops of the latter extending to the apex of the segment ; 

 terminal segment produced, the basal portion of the stem with a length three 

 nme^ its diameter, the distal enlargement subcylindric, with a length twice its 

 diameter and a long, fingerlike process apically. Palpi ; first segment very short 

 subquadrate. with a length three fourths its diameter, the second quadrate, 

 with a length one half greater than its diameter, the third slender, about twice 

 as long as the second. Face yellow. Mesonotum dark red. the submedian lines 

 sparsely haired. Scutellum dark red, postscutellum reddish. Abdomen dark 

 red the genitalia fuscous. Wings hyaline, costa dark brown, subcosta uniting 

 therewith near the basal half, the nearly straight third vein at the apex of the 

 wing, the fifth joining the posterior margin at the distal fourth, its branch near 

 the basal half. Halteres reddish transparent, fuscous apically. Coxae orange 

 yellow femora fuscous yellowish; tibis darker; tarsi nearly brown; claws 

 stout strongly curved basally, the anterior unidentate, the pulvilli about half 

 the length of the claws. Genitalia : basal clasp segment short, greatly swollen, 

 with a length about one fourth greater than its diameter; terminal clasp 

 segment short, slender, apically with a stout claw; dorsal plate short, deeply 

 and triangularly emarginate, the lobes tapering, broadly rounded and sparsely 

 setose; ventra. plate short, broad, broadly and roundly emarginate, sparsely 

 setose • style short, stout, narrowly rounded apically. 



Female— Length i mm. Antenns extending about to the fifth abdominal 

 segment sparsely haired, light brown; 14 segments, the fifth with a stem about 

 one fourth the cylindric basal enlargement, which latter has a length two and 

 one half times its diameter, a sparse subbasal whorl of stout set^ and a 

 scattering subapical band of shorter, curved sets; terminal segment shghtly 

 produced with a length three times its diameter and a short, knob-like process 

 apically. Palpi : first segment short, quadrate, with a length three fourths its 

 diameter, the second narrowly oval, with a length twice its diameter, the third 

 a little longer than the second, more slender. Color characters nearly as m 

 the male, except that the abdomen is deep red. Ovipositor short, the terminal 

 lobes with a length twice the diameter, broadly rounded apically and thickly 



setose 



Pupa— Length 1.5 mm., stout, yellowish red, darker apically. The antennal 

 sheaths extend to the base of the abdomen, the wing cases to the third 

 abdominal segment, those of the legs nearly to the fifth. 



Larva— Length 1.75 mm., rather stout, pale orange, the segmentation deep. 

 Head moderately long, broad, tapering, the antennae slender, uniarticulate, with 

 a length fully four times their diameter; breast-bone small, the shaft short. 



