340 NEW YORK STATE MUSEUM 



Described from several specimens bred June i6, 1883, from 

 sage bush, Artemisia tridentata, at Fort Garland, Col. 

 This species may possibly be identical with the R h a b d o - 

 phaga tridentatae Rubs, which was bred from this plant, 

 though this last named form is credited with having but 16 

 antennal segments and the stem being but Yi the length of 

 the basal enlargement, v^^hereas in the form under consideration 

 the stem is at least ^ the length of the basal enlargement. 



Type C. 989, U. S. National Museum 3120 



ARNOLDiA Kiefif. 

 Males 



a Stem of antennal segment about ^ longer than the basal enlargement 

 h Abdomen pale orange, palp 2 segmented, ventral plate broadly and 

 romidly emarginate, dorsal plate broad and roundly emarginate . 



u n g u 1 a t a Felt, C. 1221 

 hh Abdomen pale brown, palp 4 segmented, ventral plate slightly emar- 

 ginate, dorsal plate triangularly emarginate 



hi s p i d a Felt, C. 519 

 hhh Abdomen dark yellowish fuscous, palp 4 segmented, ventral plate 



emarginate distally, dorsal plate slightly emarginate 



(Dasyneura) cerasi Felt, C. 343 

 aa Stem of antennal segment about as long as the basal enlargement 



h Abdomen yellowish brown, palp 3 segmented, ventral plate broadly 



rounded vitis Felt, C. aii65a 



hh Abdomen reddish yellow, tibiae and tarsi dark brown, palp 3 seg- 

 mented, ventral plate roundly emarginate 



absobrina Felt, C. ai555x 



hhh Abdomen light yellowish or yellowish orange, tibiae fuscous straw, 



tarsi dark brown or black, palp 4 segmented, ventral plate roundly 



emarginate fraxinifolia Felt, C. ai572a 



aaa Stem of antennal segment ^ the length of the basal enlargement 



h Abdomen dark brown, palp 5 segmented, dorsal plate triangularly 

 incised minor Felt, C. 431 



Females 



a Abdomen pale yellowish, 5th antennal segment with a length about thrice 



its diameter, palp 3 segmented absobrina Felt, C. ai555x 



aa Abdomen light fuscous yellow, 5th antennal segment with a length about 

 2^ times its diameter, palp 4 segmented vitis Felt, C. aii65a 



DASYNEURA Rond. 



This genus comi:iriscs a large number of medium and rather 

 small usually dark brown insects which breed by preference in 

 leafy tissue. This group intcrgrades with Rhabdophaga and the 



