REPORT OF THE STATE ENTOMOLOGIST I907 35 1 



bbbbbbbb 18 antennal segments 



c Abdomen red, antennal segments with the stem as long 

 as the basal enlargement in the male, sessile in the 



female. Bred from an apical bud gall on alder 



^serrulatae O. S. 



RHABDOPHAGA WcStW. 



This genus comprises a number of large, usually reddish 

 brown forms breeding mostly in woody galls, particularly those 

 on willow. It intergrades with Dasyneura and the more typical 

 members may be distinguished by the usually tapering 3d vein 

 uniting with the margin at or very near the apex of the wing [pi. 35, 



fig. I]. 



Key to species 



a 14 antennal segments 



b Segments sessile ; abdomen reddish brown ; claws rather stout. 



Bred apparently from a Rigidae gall 



sodalitatis n. sp., ai074b 

 aa 15 to 17 anten-nal segments 



. b Females ; antennae short, segments sessile 



c 3d vein uniting with the costa at the apex ; the ovipositor 

 shorter than the body 

 d 17 antennal segments, the 5th with a length twice its 

 diameter ; the 4th palpal segment }i longer than the 

 3d ; the lobes of the ovipositor with a length 3 times 

 the width. Bred from Triticoides and Hordeoides 



galls of Walsh 



triticoides Walsh, aio87x, aio73x 



dd 16 antennal segments, the 5th with a length twice its 



diameter, tapering distally; the 4th palpal segment 



with a length }^ greater than its diameter; the lobes 



of the ovipositor with a length 3^ times their width. 



Bred from an apparently typical Strobiloides gall 



persimilis n. sp., aiSii 

 ddd 15 antennal segments 



e 5th antennal segment with a length ^ greater than 

 its diameter ; ovipositor lobe with a length >4 

 greater than its width ; abdomen dark red, yel- 

 lowish basally. Bred from nodular gall at base 

 of willow twigs. . . . .~. . .n o d ul a Walsh, ai4i2 

 ee 5th antennal segment with a length 2^ times its 

 diameter ; ovipositor lobe with a length 3 times 

 its width; the 3d and 4th palpal segments equal. 



Bred from willow twig 



r a m u s c u 1 a n. sp., ai449a ? G. 1242 

 cc 3d vein uniting with the costa a little before the apex; ovi- 

 positor long 



1 Location provisionaL 



