REPORT OF THE STATE ENTOMOLOGIST 1918 87 
slender; dorsal plate long, deeply and triangularly incised, the lobes 
tapering, narrowly rounded; ventral plate long, broadly rounded. 
Type Cecid. 641, N. Y. State Museum. 
Arthrocnodax obscura Felt 
1908 Felt, E.P. N.Y. State Mus. Bul. 124, p. 404 
This dark male was taken June 26, 1906 on blueberry, Vaccinium, 
at Karner, N. Y. 
Male. Length .75 mm. Antennae longer than the body, thickly 
clothed with fine hairs, brown; fourteen segments, the fifth with 
stems each with a length two and one-half times its diameter; ter- 
minal segment with the distal enlargement somewhat produced, 
elongate-oval. Palpi; the first and second segments subequal, with 
a length about two and one-half times the diameter, the second and 
third each probably a little longer and more slender; head black. 
Mesonotum, scutellum and postscutellum dark fuscous, abdomen 
fuscous. Wings hyaline, costa probably light brown; halteres 
fuscous. Femora pale, tibiae fuscous, tarsi darker; claws slender, 
strongly curved. Genitalia; basal clasp segment long, truncate; 
terminal clasp segment slightly swollen at the base; dorsal plate 
broad, deeply and narrowly incised, the lobes obliquely truncate; 
ventral plate broad, truncate. Type Cecid. 399. 
Arthrocnodax apiphila Felt 
1907 Felt, E. P. New Species of Cecidomyiidae II, p. 20 


~ 1908 N. Y. State Mus. Bul. 124, p. 301, 404 
1914 ————__ Econ. Ent. Jour., 7:458 
1915 ————— N.Y. State Mus. Bul. 175, pl. 2, fig. 12 
1918 —————_ N.Y. State Mus. Bul. 200, p. 159 
Both sexes were received October 10, 1907 from Dr Burton N. 
Gates, then expert in apiculture, United States Bureau of Ento- 
mology, with the state- 
ment that the larvae ap- 
peared to subsist on the 
chaff material and excre- 
ment in the bottom of the 
breeding box. It is pos- 
sible they were preying 
upon mites. Midges were 
reared from brood comb 
afiected by American foul 
brood and _ originating i 
in Tulare county, Cali- Fig. 4 Arthrocnodax apiphila, palpus of 
fornia, August 2d. The male (enlarged, original) 
comb contained much sealed brood when delivered and was found 
to have decayed. In addition to the midge larvae there were 

