330 NEW YORK STATE MUSEUM 
and by the antennal segments being almost invariably stalked 
in the males. 
A large number of forms are referable to this group, the 
_two important genera being Dasyneura and Rhabdophaga. The 
former are medium sized, usually brownish or yellowish. The 
insects breed very largely in leaf folds, leaf buds or loose leafy 
bud galls. The genus Rhabdophaga comprises a number of 
larger, usually reddish or reddish brown forms, which display 
a marked preference for woody tissues, a considerable number 
of species living in willow galls. The genus Arnoldia repre- 
sents a number of forms having 12 segmented antennae. One 
form breeds in the tumid vitis gall on grape, while several others 
which were reared probably came from decaying vegetable 
matter. The peculiar, synthetic Diarthronomyia arte- 
misiae is a western form and was reared from galls on sage 
bush. 
HOST PLANTS AND GALLS OF DASYNEURIARIAE 
Abies (spruce) 
Seed sett sade ose eee eee eee Dasyneura canadensis, a1428 
Agrostis vulgaris (Red top or June grass) 
QOVDOMINE Ol, osccoocccescecvescoos DASWMEBiA Gramimis, ©, wo 
Alnus (alder) 
BrCl TG oe ie Re PRA ere ener y Meemeerae Dasymeura serrunilatae ©, S, 
Anemone canadense 
Odser buds, Galles. 23 tahenpect, o: Wersareew emer Dasynewra anlemiom ec, 21522 
Artemisia tridentata (sage bush) 
Stein scaly Reet vane DiAvrrMnrOnOumyia ArECiMniISiac, G Oso 
Cephalanthus (button bush) 
ae wikew Callie bart Ge nin ReNeenen: Reha bidrompyhrarceade che pylvauleactutelapi Gan rOAS 
Clematis virginiana (virgin’s bower) 
Ovals 'stemMoal Men ay pent cee see Dasyneura clematidis, a1659 
Corylus (hazel) 
Hairy leatistolds stat) eee ere DASYymNetra COrwit, ausyig 
