REPORT OF THE STATE ENTOMOLOGIST I9Q1I2 133 
Lestremia Macq. 
1826 Macquart, J. M. Dipt. Nord. de la France, 1, 123 
1826 Meigen, J. W. Syst. Beschr., 5:308 
1834 Macquart, J. M. Hist. Nat. Ins. Dipt., 1:157 
1840 Westwood, J. O. Introduct. Class. Ins. Syn., p. 127 
1844 Loew, H. Stett. Ent. Zeit., 5:324 (Cecidogona) 
1846 Rondani, Camillo. Nouvi Ann. Sci. Nat. Bologna, ser. 2, v. 6; 
mparate,p.7 (Purcinerva),i0(Mimosciara) 
a Dipt. Ital Prodr., 1:1908 (Yposatoea) 
i) ———— — ‘Atti Soc. Ital. Sci. Nat. Milano, 2:287(Molobraea ) 
1862 Osten Sacken, C. R. Dipt. N. Am. Mon., 1:178 
1864 Schiner, J. R. Fauna Austriaca Dipt., 2:413 
1870 Winnertz, J. Vehr. z.—b. Ges. Wien, 20:30 
1876 Bergenstamm, J. E., & Low, Paul. Syn. Cecidomyidarum, p. 17 
fecowokuse, F. A.A. Linn. Soc. N. S. Wales, Proc.,-3:144 
1892 Theobald, F. V. Acct. Brit. Flies, p. 52, 87 
na07 mielfer, J..J. Syn. Cecid. Eur. & Alg., p. 52 
Pte SoC. Ent Fr. Ann. 69:437, 442 (Mimosciara ), 
merccecidogona, Furcinerva) 
1904 Meunier, F. Soc. Sci. Brux. Ann. 28:9, 31 
moe pelt, EP. N. Y. State Mus. Bul. 124, p. 308, 310 
Pee. Ve nt. SOC. Jour, 19:31 
This genus is easily recognized by the characteristic fork of the 
fourth vein, by costa not attaining the apex of the wing, and by 
the antennae being well developed, those of the male having 16 
and those of the female 11 segments. Certain European species 
are credited with having 15 antennal segments in the male and 12 
in the female. The antennal segments in the female are short, sub- 
cylindric or subconical and in some species at least, ornamented 
distally with thick rows of short, stout, chitinous sensory processes. 
The male antennae are provided with a distinct stem nearly as 
long or longer than the basal enlargement, which latter is orna- 
mented by one or more crenulate whorls from the base of which 
arise long, curved setae. The genitalia are very characteristic. 
Biype L. cinerea Macq. 
Nothing is known concerning the life history and habits of mem- 
bers of this genus, aside from the fact that they are most abundant 
in the vicinity of forests. Kieffer states that the European L. 
leucophae@ Meign. occurs in decaying beech wood and it is 
very probable that our American forms breed largely in rotting 
ligneous tissues. 
