208 NEW YORK STATE MUSEUM 
Female. Length .75 mm. Antennae extending to the middle of 
the abdomen, sparsely haired, light brown; fourteen segments, the 
fifth with a stem one-fifth the length of the cylindric basal enlarge- 
ment, which latter has a length about three times its diameter; 
terminal segment slightly reduced and apically with a rather short, 
stout appendage. Palpi; first segment with a length twice its diam- 
eter, the second one-half longer, the third as long as the second, 
the fourth a little longer than the third. Face yellowish. Mesono- 
tum black. Scutellum and postscutellum reddish brown. Abdomen 
reddish brown, the distal segment and ovipositor light yellowish, 
the other segments margined posteriorly with dark brown. Costa 
reddish brown, subcosta uniting therewith at the basal fourth, the 
third vein joining the margin well beyond the apex. MHalteres yel- 
lowish or reddish transparent. Coxae and basal portion of femora 
yellowish, distal portion of femora, tibiae and tarsi a variable straw 
brown; claws slender, slightly curved, smple. Ovipositor short, the 
lobes lanceolate, slender, coarsely setose. Type Cecid. 102. 
DYODIPLOSIS Rubs. 
1910 Rubsaamen, E. H. Zeitschr. Wissenschaft. Insektenbiol., 6:287 
1911 Felt, E.P. N. Y. Ent. Sec. Jour., 19:62 
1912 Rubsaamen, E. H. Zeitschr. Wissenschaft. Insektenbiol., 8:49 
1913 Kieffer, J. J. Gen. Insect., fasc. 152 p. 205 
This genus, previously unrecognized in America, presents a general 
resemblance to a typical Hormomyia. It may be distinguished by 
the mesonotum not being produced over the head, the tri- or quadri- 
articulate palpi, the moderately long circumfila, the female being 
noteworthy because of the erect loops and the two connecting filt, 
the simple claws and rudimentary pulvilli, the short ovipositor, the 
heavy genitalia with a broadly lobed dorsal plate and the broad, 
truncate, ventral plate. Type Hormomyia aranariae 
Rubs. 
Dyodiplosis davisi n. sp. 
The male was taken in a trap lantern at Huguenot Park, Staten 
Island, June 22, 1906. It appears to be most closely allied to this 
genus though it differs somewhat from the typical form. Two 
Indian species are known and as the generic type is European, this 
would indicate a wide distribution for the genus or at least closely 
allied forms. 
Male. Length 3.5mm. Antennae probably longer than the body, 
pale straw. yellow, and presumably with fourteen segments. The 
fifth with stems with a length one-half greater and a little greater 
than their diameters, respectively; distal enlargement subcylindric, 
with a length about twice its diameter; circumfila with short, mod- 
erately thick loops. Palpi; first segment with a length over twice 
