REPORT OF THE STATE ENTOMOLOGIST I918 83 



<ia Basal and distal portions of the stems of the fifth antennal segments of the 



male equal or nearly so 



b Basal portion of the stem with a length one-half greater than its diameter, 



the distal part with a length one-fourth greater. Abdomen yellowish. 



Length .6 mm. Ventral plate long, broad, rounded. Reared from 



Eriophyes galls meridionalis Felt, C. a2335 



bb Basal portion of the stem with a length two or two and one-half times its 

 diameter 

 c Abdomen orange yellow. Length .75 mm. Dorsal plate short, 



incised. Ventral plate long, narrowly rounded 



i n c i s a Felt, C. 67 

 cc Abdomen yellowish. Length .25 to .75 mm. Dorsal plate broadly 

 and triangularly emarginate. Ventral plate long, broad, rounded. . 



abdominalis Felt 

 ccc Abdomen yellowish brown. Length i mm. Basal clasp segment with 



a rounded lobe basally. Ventral plate short, broad, rounded 



a c e r i n a Felt, C. 149 



cccc Abdomen pale yellowish. Length i mm. Dorsal plate short, deeply 



and narrowly emarginate. Ventral plate long, broad, slightly 



emarginate Reared from rolled elder leaves 



sambucifolia Felt, C. ai723 

 ccccc Abdomen dark red. Length i mm. Dorsal plate deeply and tri- 

 angularly emarginate. Ventral plate long, broad, rounded 



f r ax ini Felt, C. 179 

 cccccc Abdomen fuscous. Length .75 mm. Dorsal plate long, narrowly 



incised. Ventral plate short, broad, rounded 



o b s c u r a Felt, C. 399 



Arthrocnodax incisa Felt 



1907 Felt, E, P. N. Y. State Mus. Bui. no, p. 140; separate, p. 43-44 

 {Cecidomyia) 



1908 N. Y. State Mus. Bui. 124, p. 403 



This orange-brown male was taken May 21, 1906, on soft maple, 

 Acer rubrum, at Albany, N. Y. 



Male. Length .75 mm. Antennae half as long as the body. 

 Tather thickly haired, light brown; fourteen segments, the fifth with 

 stems each thrice their diameters. Palpi; the first and second 

 segments short, irregularly subcjuadrate, the third and fourth, each 

 about as long as the two preceding combined, the third a little 

 stouter than the following. Mesonottun dark brown. Scutellum 

 orange brown, postscutellimi darker. Abdomen orange brown, 

 somewhat darker dorsally on the second, third and fourth abdominal 

 segments. Wings hyaline, costa light brown; halteres yellowish 

 transparent. Legs a variable yellowish brown; posterior coxae 

 reddish, femora and tibiae light brown, slightly darker distally, 

 tarsi rather dark brown; claws slender, uniformly curved. Geni- 

 talia; basal clasp segment long, slender; terminal clasp segment 

 swollen at the base; dorsal plate broad, deeply and narrowly incised, 

 the lobes narrowing, broadly rounded apically ; ventral plate narrow, 

 long, subtruncate. Type Cecid. 67. 

 6 



