388 NEW YORK STATE MUSEUM 
d Palpi biarticulate 
e Abdomen dark reddish brown; the 2d palpal segment not 
3 times the length of the Ist; ventral plate long, broad, 
roundly and slightly emarginate, male; bred from 
WeobaeR tS fezaNh Oral VaWwanellananClaiee oo050000000000000000 500 
Canadensis. n. sp, arse 
ee Abdomen dark reddish; the 2d palpal segment 3 times 
the length of the Ist, female; bred from a terminal 
budecallmonmspinaieaseenrraseet clarkei n. sp. at7soa 
dd Palpi triarticulate | 
eé Abdomen shiny black; ventral plate spatulate, truncate 
dorsallyasmaleasee een eee johnsoni Felt, C. 821 
ee Abdomen dark red; ventral plate short, broad, broadly 
emarginate, male; bred from cockscomb gall on Cra- 
TACK USE leaves ace Cr at aecitho lias Helt. angoz 
aa Wings broad, broadly rounded posteriorly, the width about % the length 
OL 47% ine, Ble Palpi | tri or quadriarticulate 
b Palpi triarticulate 
c Abdomen dark salmon or deep red; 5th antennal segment with a 
broad, smooth area and slightly constricted near the basal 3d; 
3 circumfili, the loops heavy, rather short, broad; ventral plate 
roundly emarginate, male; bred from tubular gall on oak leaves 
(CECiadCeimyie) EhDicOla O. S, CG wie, anraso 
cc Abdomen light yellowish; 5th antennal segment cylindric, taper- 
ing at both extremities, with 3 circumfili, the loops heavy, 
rather short, broad, male; bred from melon-shaped, with de- 
pressed center, hickory leaf gall..thompsoni n. sp., C.1116a 
bb palpi quadriarticulate 
c Abdomen fuscous or deep carmine; 5th antennal segment having 
the basal stem with a length 34 its diameter, the distal stem 
with a length % its diameter, the basal enlargement slightly 
produced, with a length twice its diameter and tapering at 
both extremities; circumfili indistinct, short, the loops with a 
length about equal to the distance separating their insertions ; 
dorsal plate broadly and roundly emarginate............-..... 
(SCECidomiyve) Caryvyae Os So GQ worry 
cc Abdomen orange or deep carmine; 5th antennal segment with the 
basal portion of the stem hardly apparent, the distal part very 
short, the basal enlargement subcylindric, with a length about 
YZ its diameter, the distal enlargement cylindric, with a length 
YZ greater than its diameter; circumfili heavy, the loops thick, 
the basal loops reaching to the insertion of the 2d circumfilum, 
the loops of the distal circumfilum to the base of the following 
segment; dorsal plate nearly truncate, very slightly and broadly 
emarginate; bred from smooth subglobular, nippled gall on 
HiGKOR Vis hein ee Sate eee ees ARCUAT Ila mm Qo, C. wiezdz 
