REPORT OF THE STATE ENTOMOLOGIST 1907 ° 381 
aaa Abdomen dull red; wings small, narrow; scutellum reddish yellow; 3d 
| antennal segment with a length 2!% times its diameter; female, bred 
HLOMMVAniNAeRed CISD ROWMeleatyaallonpOakeleaiinas seve ctics cere iota on 
| (Cecidomyia) pilulae Walsh, C. 811, 814, 850, 1046, 1105 
-aaaa Abdomen yellowish 
b Abdomen yellowish brown; wings small, broad; antennal segments 
Van © tO Y Gicekimabie wg, Siew Wiroia GueINe 2oossonasodccees 
(Oligotrophus) rhoina Felt, C. 94 
bb Abdomen pale yellow, wings rather small, medium width, 5th an- 
tennal segment with 7 circumfili, finely reticulate, length 2.5 mm, 
male; bred from slight blister swelling on lateral veins of red 
Oakael CAviesty reat ites week ener tg cceomn enemies AWN SKNC AMZ i Sdoy IO 
bbb Abdomen pale orange; wings large, narrow; scutellum pale yel- 
lowish; 3d antennal segment with a length 3% times its diameter; 
Letra etcete acne eres CA¥Sspahtormnidsysliiva) its: o) bin almvays helt) Cs 1168 
bbbb Abdomen reddish yellow; wings large, broad; scutellum fuscous 
yellowish; 3d antennal segment with a length 2% times its 
Giamleteteehemdlewe me.cwehocue ee acarsntces connecta n.sp., C. 822 
DIPLOSARIAE. 
The members of this tribe are easily distinguished by the long, 
slender, thickly haired, 14 segmented antennae, the flagellate segment 
being binodose and usually provided with two or three circumfill. 
The palpi vary from uniarticulate in a European form, to quadri- 
articulate. The third vein may unite with the margin well before 
the apex, as in Arthrocnodax, or at or well beyond, as in some other 
species. The claws are simple or toothed. This group presents 
some exceedingly interesting variations, not only in antennal but 
also in genitalic structures, the latter presenting extreme diversity. 
Owing to time limitations it has not been possible up to the present 
to prepare keys ‘for the separation of the females. 
The members of this group appear to live largely in the more 
tender, leafy or bud tissues, though a considerable number are in- 
quilines, while a few live upon fungus or are zoophagous. 
HOSTS, HOST PLANTS AND GALLS OF THE DIPLOSARIAE 
Agrimonia (agrimony) 
edu hromenlOnets) acs. cc. area COMtACiMLe AGP iMOmMIAe, (C Aiuloos 
Amelanchier (shadbush) 
Bred from truncate leaf gall.... Hormomyia canadensis, C. a1758 
Apis (bee) 
Bred from hive debris ...:....... MEtINPOCHOGAS Apiplnilar, C, ang 
