REPORT OF THE STATE ENTOMOLOGIST I912 I33 



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; 



separate, p. 7 (Furcinerva), 10 (Mimosciara) 



1856 — Dipt. Ital. Prodr., 1:198 (Yposatoea) 



i860 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 :4I3 



1870 Winnertz, J. Vehr. z.-b. Ges. Wien, 20:30 



1876 Bergenstamm, J. E c , & Low, Paul. Syn. Cecidomyidarum, p. 17 



1888 Skuse, F. A. A. Linn. Soc. N. S. Wales, Proc, 3:144 



1892 Theobald, F. V. Acct. Brit. Flies, p. 52, 87 



1897 Kieffer, J. J. Syn. Cecid. Eur. & Alg., p. 52 



1900 Soc. Ent. Fr. Ann. 69:437, 442 (Mimosciara), 



443 (Cecidogona, Furcinerva) 



1904 Meunier, F. Soc. Sci. Brux. Ann. 28:9, 31 



1908 Felt, E. P. N. Y. State Mus. Bui. 124, p. 308, 310 



1911 N. Y. Ent. 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 n 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. 

 Type L. c i n e r e a 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 a Meign. occurs in decaying beech wood and it is 

 very probable that our American forms breed largely in rotting 

 ligneous tissues. 



