REPORT OF THE STATE ENTOMOLOGIST 1918 83 
aa 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 
Briophyes galls. iiss oe eB a 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.................. 
incisa 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. Lengthimm. Basal clasp segment with 
a rounded lobe basally. Ventral plate short, broad, rounded..... 
acerina Felt, C. 149 
ecce Abdomen pale yellowish. Length 1 mm. Dorsal plate short, deeply 
and narrowly emarginate. Ventral plate long, broad, slightly 
emarginate Reared from rolled elder leaves...............+-2-- 
sambucifolia Felt, C. a1723 
ecccc Abdomen dark red. Length 1 mm. Dorsal plate deeply and tri- 
angularly emarginate. Ventral plate long, broad, rounded........ 
fraxind Helt Ce 170 
ccccce Abdomen fuscous. Length .75 mm. Dorsal plate long, narrowly 
mcised. WVentral plate;short. broad, roundeds Js49e)00. ae eee 
obscura Felt, C. 399 
Arthrocnodax incisa Felt 
1907 Felt, E, P. N. Y. State Mus. Bul. rro, p. 140; separate, p. 43-44 
{Cecidomyia) 
1908| ————_—._N. Y. State Mus. Bul. 12a, 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; 
rather thickly haired, light brown; fourteen segments, the fifth with 
stems each thrice their diameters. Palpi; the first and second 
segments short, irregularly subquadrate, the third and fourth, each 
about as long as the two preceding combined, the third a little 
stouter than the following. Mesonotum dark brown. Scutellum 
orange brown, postscutellum 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. Gen1- 
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 
