REPORT OF THE STATE ENTOMOLOGIST I918 1/9 



ee Lobes of the dorsal plate strongly divergent 



/ Abdomen pale yellowish, length 1.25 mm; fourth palpal 

 segment three-fourths longer than the third, the fifth 

 antennal segment having the two parts of the stem 

 with a length three and three and one-half times their 

 diameters; dorsal plate lobes very large, divergent, 

 the distal third setose and as long as the ventral plate 

 explicata Felt, C. 515 

 (l /f Abdomen bright orange, length i mm; dorsal plate lobes 



divergent, distinctly constricted subapically and bear- 

 ing a few stout setae apically; ventral plate twice the 

 length of the dorsal plate; reared from wheat heads. . 



t r i t i c i Felt 

 cc Stems of the fifth antennal segment plainly unequal 



d Stems each with a length about three and four and one-half times 

 its diameter 

 e Abdomen reddish yellow, length 1.5 mm; reared from flowers 



of Apocynum apocyni Felt, C. ai684a 



ee Abdomen fuscous yellowish, distally deep orange, length 



1.5 mm; reared from apical bud galls on spiraea 



spiraeina Felt, C. ai 759X 

 eee Abdomen greenish bronze, length 1.5 mm; reared from 



flowers of spiraea spiraeaflo rae. Felt, ai68ib 



• eeee Body yellowish or yellowish orange, length i mm 



uliginosa Felt, C. i486 

 dd. Stems each with a length one and one-half and two and one-half 

 times its diameter 



e Abdomen dark or reddish brown, length 2 mm 



hudsoni Felt, C. i 



ee Abdomen reddish yellow, length 1.5 mm 



setariae Felt, ai72i 

 ddd Stems with a length of one and one and three-fourths times their 

 diameters respectively 



e Abdomen dark brown; length 2 mm 



r e f 1 e X a Felt, C. 1422 

 ' diid Stems each with a length of one and one and one-half times their 

 diameters respectively 

 e Abdomen yellowish orange; length 1.5 mm; reared from 



decaying birch wood putrida Felt, a2264 



hhh Ventral plate truncate or nearly so 



c Abdomen pale yellowish orange, length 1.6 mm; fifth antennal seg- 

 ment having the basal part of the stem with a length twice its 



diameter nixoni Felt, C. 510 



cc Abdomen dark fuscous yellowish, length 1.25 mm; fifth antennal 

 segment having the basal part of the stem with a length one-half 



greater than its diameter tolhurstae Felt, C. 721 



hhhh Ventral plate broadly rounded, dorsal plate long, the lobes rounded 



c Abdomen pale orange, with a fuscous spot basally, length .5 mm; 

 fifth antennal segment having the stems with a length two and one- 

 fourth and three times their diameters . .quercina Felt, C. 342 

 12 



