REPORT OF THE STATE ENTOMOLOGIST I917 



163 



rounded ; ventral plate narrow, deeply incised, the lobes long, slender. 

 Harpes stout, excavated basally, the distal portion prolonged as a 



Fig. 63 L o b o d i - 

 p 1 o s i s a c e r i n a, 

 fifth antennal seg- 

 ment of male (en- 

 larged, original) 



Fig. 64 Lobodiplosis 

 acerina, side view of 

 anterior claws of male (en- 

 larged, original) 



halberdlike chitinous blade, the apex acute. Type Cecid. 243, (See 

 plate 8, fig. 10, plate 11, fig. 2) 



Lobodiplosis triangularis n. sp. 



The male was taken March 7, 19 13 by Owen Bryant at Grey- 

 lock, Mass. It is easily distinguished from related forms by the 

 characteristic shape of the lobe on the basal clasp segment. 



Male. Length i mm. Antennae twice the length of the body, 

 light brown, 14 segments, the fifth with stems having a length twice 

 and two and one-half times their diameters, respectively. Terminal 

 segment with a long irregular spindle-shaped appendage. Palpi; 

 first segment short, irregular, the second nearly twice the length 

 of the first, the third a little longer than the second, more slender, 

 the fourth a little longer than the third. Mesonotum dark brown. 

 Scutelltmi and postscutellum light yellowish brown. Abdomen 

 dark brown, genitalia fuscous yellowish. Halteres yellowish. Legs 

 mostly yellowish brown. Claws rather long, irregularly curved, 

 the anterior unidentate, the pulvilli about one-half the length of the 

 claws. Genitalia; basal clasp segment moderately long, stout and 

 with a narrowly triangular, sparsely setose apical lobe. Terminal 

 clasp segment rather short; dorsal plate moderately long, broad, 

 broadly and roundly emarginate, the lobes short, broadly rounded 

 and sparsely setose; the ventral plate long, moderately broad, tri- 

 angularly emarginate, lobes short, broadly rounded. Style long. 

 Type Cecid. 1443. 

 6 



