REPORT OF THE STATE ENTOMOLOGIST 1918 gt 
stems one and one-half and two times their diameters, respectively ; 
terminal segment with the distal enlargement produced, having a 
length nearly twice its diameter and a short, stout process apically. 
Palpi; first segment subquadrate, the second narrowly oval, with a 
length three times its diameter, the third as long as the second, 
slender, the fourth one-fourth longer than the third, more slender. 
Face yellowish. Mesonotum fuscous yellowish. Scutellum, post- 
scutellum and abdomen pale yellow. Wings rather broad, costa 
light brown. Halteres and legs yellowish: claws very long, slender, 
evenly curved, the pulvilli shorter than the claws. Genitalia: basal 
clasp segment short; terminal clasp segment slightly swollen basally; 
dorsal plate short, deeply and triangularly incised, the lobes narrowly 
rounded; ventral plate short, truncate. Type Cecid. ar72ob. 
Arthrocnodax sambucifolia Felt 
1908 Felt, E.P. N.Y. State Mus. Bul. 124, p. 404 
nQLS) —————————  N.*¥? State’ Mus! Bul? 20>) p. 188 
This presumably pale yellowish male was reared at Albany, N. Y.., 
September 13, 1907 from rolled elder leaves, Sambucus 
canadensis. 
Gall. Reared from rolled elder leaves. 
Larva. Length 1.5 mm, pale yellowish, slender. Head long, 
tapering, with a length over twice its diameter; antennae slender, 
with a length one-half greater than the diameter of the anterior 
fourth of the head. The chitinous rods supporting the head one-half 
longer than the head, converging posteriorly, the second segment 
with a diameter twice that of the basal portion of the head, the third 
with a diameter twice the posterior width of the second segment; 
the second, third and fourth segments at least, with long, well devel- 
oped, submedian, sublateral and lateral setae, those of the fifth 
visible only on the lateral margins and on the following segments 
apparently rudimentary. Skin coarsely shagreened; posterior 
extremity roundly emarginate, with obscure submedian tubercles. 
Male. Lengthrmm. Antennae one-fourth longer than the body, 
rather sparsely haired, pale yellowish; fourteen segments, the fifth 
with stems two and one-half times the diameter; terminal segment 
produced, the distal enlargement cylindric, with a length two and 
one-fourth times its diameter; apical process rather short, stout. 
Palpi; first segment subquadrate, the second with a length three 
times its diameter, the third as long as the second, slender, the 
fourth one-fourth longer than the third, slender. Thorax and 
abdomen probably pale yellowish. Wings hyaline, costa light straw. 
Halteres and legs probably pale yellowish; claws very long, slender, 
evenly curved, the pulvilli shorter than the claws. Genitalia; basal 
clasp segment long, slender; terminal clasp segment swollen basally; 
dorsal plate very short, deeply and narrowly emarginate, the lobes 
truncate; ventral plate long, broad, broadly and slightly emarginate. 
Type Cecid. a1723. 
