REPORT OF THE STATE ENTOMOLOGIST 1906 163 
Choristoneura erigerontis n. sp. 
Male. Length 2.25 mm. Antennae very short, not extending 
to the base of the abdomen, sparsely haired, dark brown, yellowish 
basally, 14 segments; face with a conspicuous patch of silvery 
white scales. Mesonotum dark brown, the submedian lines sparsely 
clothed with yellowish setae. Scutellum dark reddish brown, 
postscutellum dark brown. Abdomen dark brown with rather 
large, submedian lunate spots on the posterior margin of each 
segment, incisures pale salmon, genitalia fuscous; venter suffused 
with silvery white scales. Halteres pale salmon. Legs mostly a 
variable dark brown, the basal two thirds of femora yellowish, 
tibiae and the first and last tarsal segments banded basally, and 
the others narrowly annulate basally and apically with silvery white, 
the annulations broader on the posterior legs. 
Female. Length 2.5; mm. Antennae with 16 segments. Colo- 
rational characters about as in the opposite sex. 
Bred May 29, 1907 from fusiform stem galls on horseweed, 
Erigeron canadense, taken at Albany, N. Y. 
Type Cecid. ar427a, N. Y. State Museum. 
Choristoneura modesta n. sp. 
Female. Length 2mm. Antennae hardly extending to the base 
of the abdomen, sparsely haired, brown, lighter apically, 18 seg- 
ments; face sparsely clothed with light scales. Mesonotum black, 
sparsely margined laterally and anteriorly by pale setae, a few 
light ones before the wings and on the pleurae. Scutellum a little 
lighter than the mesonotum. Abdomen black, the segments 
margined posteriorly with a very narrow line of light scales, inter- 
rupted mesially and with a few scattered light scales laterally. 
Halteres whitish basally, translucent apically, fuscous subapically. 
Legs black above, lighter beneath. 
Male. Length 2.25 mm. Antennae with 14 segments. Color 
characters nearly as in the opposite sex. 
Bred May 20, 1907 presumably from small, oval swellings appear- 
ing much like arrested buds, on the stems of horseweed, Erigeron 
canadense, taken at Albany, N. Y. 
Type Cecid. a1427, N. Y. State Museum. 
