REPORT OF THE STATE ENTOMOLOGIST 1907 339 
Ulmus (elm) 
lees Boyne eee Neh y oasiheiccne NRG ee wcldiw nice Dasymetra milmea, Ch eso 
: Vaccinium (cranberry) 
Westie Olde gall tse ss oe se DASWMEUTA WAaACCIMiIn Sema, Cy O87 
Vitis (grape) 
Biccrernecleml Catgro alleviates cere ta ear h du aett: DASWMOUira WitelS, AMOS 
Bib comtcledeavtea cca lleirmh assy eet gree. ec shar seace cuts APMOLGIA Witis, ais 
Wood, decaying 
Pimentel oo soagooc eu oes ous DASWMROUMPA HlaAvOUlDialis, simisa 
Yucca 
DASVYRCUPA WUCCae, C, 1x3 
Key to genera 
@ Palko preyrnvenl ENS cise car actors Od noo pine ee eee Diarthronomyia n. g. 
aa Palpi quadriarticulate 
b AMSNIAS WH TA SSBINEIMIS s ooocococoucdoopouvodnooUnK Arnoldia Kieff. 
bb Antennae usually with more than 12 segments 
c 3d vein uniting with costa distinctly before the wing apex, straight or 
curved anteriorly and tapering but little distally....Dasyneura Rond. 
cc 3d vein uniting with costa very near or at the wing apex, straight and 
mSswalliy taperine GChiSthy, 5oconc0000b00950000006 Rhabdophaga Westw. 
DIARTHRONOMYIA N. g. 
This genus presents a general resemblance to Rhopalomyia 
and like it has biarticulate palps and a great similarity in the 
structure of the male genitalia. The minutely unidentate claws 
associate it with Rhabdophaga and its allies. The wing is illus- 
trated on plate 34, figure 9. 
Type ID. Artemisia 
Diarthronomyia artemisiae n. sp. 
Male. Length 2 mm. Antennae nearly as long as the body, 
rather thickly haired, yellowish brown, 18 segments; mesonotum 
dark reddish brown, the submedian lines sparsely haired; scutel- 
lum reddish brown, postscutellum darker; abdomen sparsely 
haired, reddish brown; halteres yellowish transparent; legs a 
variable light straw, lighter distally. 
Female. Length 3 mm. Antennae extending to the 3d abdom- 
inal segment, sparsely haired, pale yellowish, probably composed 
of 18 segments; color characters about as in the opposite sex. 
