RKPORT OF Tin- 



SPATI-: i:xToMor.oc;iST 1906 163 



Choristoneura erigerontis 11. sp. 



Male. Length 2.25 mm. Antennae very short, not cxtenchng 

 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 

 larg3, submedian lunate spots on the posterior margin of each 

 segment, incisures pale salmon, genitalia fuscous; A'-enter 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. ai427a, N. Y. State Museum. 



Choristoneura modesta n. sp. 



Female. Length 2 mm. 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. ai427, N. Y. State Museum. 



