REPORT OF THE STATE ENTOMOLOGIST 1918 233 
Odontodiplosis americana Felt 
1908 Felt, E.P. N.Y. State Mus. Bul. 124, p. 404 
This pale yellowish male was taken July 3, 1906 on alder, Alnus 
viridus, and the 24th on low blackberry, Rubus villosus, 
at Albany, N. Y. The female, provisionally associated with this 
species, was taken on the same date. 
Male. Length 1 mm. Antennae one-fourth longer than the body, 
thickly haired, pale straw; fourteen segments, the fifth with stems 
each three times their diameter; terminal segment, distal node 
stout, subcylindric, with a length about four times its diameter and 
at the distal fourth tapering to a narrowly rounded apex. Palpi; 
the first segment short, stout, irregularly ovoid, the second rather 
stout, with a length over three times its diameter, the third a little 
' longer and more slender than the second; face yellowish, eyes dark 
reddish. Mesonotum fuscous yellowish. Scutellum pale yellowish, 
postscutellum dark brown. Abdomen pale yellowish, dark brown 
basally and apically. Wings hyaline, costa pale straw; halteres 
yellowish transparent. Legs a nearly uniform pale straw; tarsi 
slightly lighter, the terminal segments darker; claws long, slender, 
strongly curved, the pulvilli nearly as long as the claws. Genitalia; 
basal clasp segment long, slender, a. rudimentary lobe at the basal 
third; terminal clasp segment long, slender; dorsal plate short, broad, 
broadly and triangularly emarginate, the lobes diverging, broadly 
rounded; ventral plate short, broad, broadly rounded. Harpes 
convolute, rather short, approximate, the margin dentate; style long, 
slender, narrowly rounded. Type Cecid. 451. 
Female. Length .75 mm. Antennae about as long as the body, 
sparsely haired, light brown; probably fourteen segments, the fifth 
with a stem fully as long as the cylindric basal enlargement, which 
latter has a length over twice its diameter, and is slightly constricted 
near the basal third; terminal segments cylindric, with a length four 
times their diameter, obtusely rounded apically; mouth parts slightly 
produced. Palpi; first segment irregularly subquadrate, the second 
narrowly oval, with a length three times its diameter, the third 
one-half longer than the second, more slender. Mesonotum dark 
brown, submedian lines sparsely setose; scutellum pale orange; 
postscutellum fuscous orange. Abdomen yellowish orange with 
indistinct fuscous markings laterally. Wing membrane rather 
thickly clothed with narrow, hairlike scales; costa dark brown; 
halteres pale yellowish basally, whitish transparent apically. Legs 
fuscous yellowish. Ovipositor short, the lobes with a length six 
times the width. 
Odontodiplosis montana Felt 
1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 404 
This fuscous yellowish male was taken July 27, 1906 on hemlock, 
Tsuga canadensis, at Newport, N. Y. 
