304. NEW YORK STATE MUSEUM 
cc Abdomen dark brown or brownish black 
d The 5th antennal segment with the basal portion of the stem 
having a length equal to its diameter, the distal portion of 
the stem with a length 3 times its diameter; the 4th palpal 
segment 14 longer than the 3d. Bred from Negundo...... 
“MESCMGINONNA ww So, C. C7 
dd The 5th antennal segment with the 2 portions of the stem 
having a length 1% greater than the diameter; the 4th palpal 
segment 4 longer than the 3d. Bred from melon tip...... 
setigera Lintn. 
ddd The 5th antennal segment with the 2 parts of the stem 
having a length 2% times greater than the diameter; the 
4th palpal segment twice the length of the preceding. 
BrobablyabnedsinonahincxcI0tl Speer er eee carne 
Caiadensits =nesp.. Gamoz7 
DICHRODIPLOSIS Kieff. 
A few somewhat diverse species have been referred to this genus 
because they have all the claws unidentate. It is probable that 
several forms at least are not cogeneric with the type of the above 
named genus. 
Key to species 
a Abdomen fuscous yellowish, length 1.25 mm; fifth antennal segment having 
the stems with a length 3% and 4% times their diameters; palpi quadri- 
articulates, bred irommassubelopularmleanrcal leon poplanseneaeeeeeeee 
DOM mM Go, CC, aww 
aa Abdomen reddish brown 
b Fifth antennal segment having the stems with a length 2 and 3% 
times their diameters; length 1.5 mm....androgynes n. sp., C. 6 
bb Fifth antennal segment having the stems very short, the basal stem with 
a length only about % its diameter 
c Antennal swellings elongate, coalescing; length 1.5 mm; probably bred 
from oak leaves..... (Cecidomyia) quercina Felt, C. 1006 
cc Antennal swellings stout, well separated, length 1.5 mm.............. 
(CECiIGomYyia) untwlliitiia Pek, C. woz 
BREMIA Rond. 
This genus, like Aphidoletes, has the antennal setae and hairs 
greatly prolonged on the dorsal face. ‘The male may be distin- 
euished from all other Cecidomytidae known to us by the low 
rudimentary circumfilum occurring on the base of the distal en- 
largement of the antennal segments |[fig. 44]. The pulvilli are 
very short or rudimentary, the anterior claws only being uniden- 
1Possibly the same asCecidomyia negundinis Gill, 
