
REPORT OF THE STATE ENTOMOLOGIST IQI7 I4I 
Halteres yellowish basally, reddish brown apically. Coxae and 
‘emora basally, pale yellowish; femora distally, tibiae and tarsi a 
variable fuscous straw; claws long, slender, strongly curved, the 
pulvilli nearly as long as the claws. Type Cecid. ar722. 

| BREMIA Rond. 
1860 Rondani, C. Soc. Sci. Nat. Milano Atti, 2:4 
1895 Rtbsaamen, E.H. Ent. Nachr., 21:186 
1896 Kieffer, J. J. Wien. Ent. Zeit., 15:92, 95 
1897 ——————_ Syn. Cecid. de Eur. & Alg., p. 27 
1900 —————_ Soc. Ent. Fr. Ann., 69: 447 
1904 —————_ Soc. Sci. Brux. Ann., 28:19-22 
1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 394 
1910 Rubsaamen, E.H. Zeitsch. Wissenschaft. Insektenbiol., 15:288 
1911 Felt, E.P. N. Y. Ent. Soc. Jour., 19:53 
1912 Kieffer, J. J. Ent. Soc. Fr. Bul. 6, p. 137-38 
ug == Gen. Insect., fasc. 152, p- 165 
This genus was erected with C. decorata Winn. as the 
type, it being distinguished from all other known Diplosids by the 
greatly produced hairs on one side of the antennae. C. aphidi- 
myza Rond., a zoophagous species, was also noticed and assumed 
to belong to the same genus. Later Kieffer showed there were 
marked structural differences between the two forms and that these 
morphological variations were accompanied by a divergence in 
habits. ; 
This genus, like Aphidoletes, has the antennal setae and circumfili 
greatly prolonged on the dorsal face of the segments. The male 
may be distinguished from all other Cecidomyiidae known to us 
by the low rudimentary circumfilum occurring on the base of the 
distal enlargement of the flagellate antennal segments (figure 48). 
The pulvilli are very short or rudimentary, the anterior claws only 
being unidentate. The wing is illustrated on plate 8, figure 7. 
The ventral plate in the male tapers distally, presenting a very 
different appearance from that obtaining in Aphidoletes. Members 
of this genus are said by Kieffer to be xylophagous. Recent changes 
in generic grouping do not appear to be justified by American forms 
and have therefore not been followed. 

Key to Species 
a Distal enlargement of the fifth antennal segment of the male produced, with 
length one-half greater than its diameter, the terminal clasp segment 
distinctly enlarged subapically 
b Abdomen dark yellowish brown, length 1.3 mm; stems of the fifth antennal 
segment in the male one and one-half and three and one-half times their 
diameters, respectively... ..----+--++-+00 borealis Felt, C. 1497 
