REPORT OF THE STATE ENTOMOLOGIST [916 



137 



Smith, J. B. 



N 



Lasioptera nodulosa Bcutm. 

 N. J. Agric. Exp't Sta. Bui. N., p. 13-14 

 J. Agric. Exp't Sta. i_uh Rep't, 189: 



F. M. Ohio Agric. Exp't Sta. Bui. 45, p. 



p. 382-84 

 188-89 (L. 



J3:397 



1891 



1891 

 (L. f a r i n o s a) 



1893 Webster, 

 f a r i n o s a) 



1907 Beutenmueller, William. Amer. Mus. Nat. Hist. Bui 



1908 Felt, E. P. N. Y. State Mus. Bui. 124, p. 325 



1909 Jarvis, T. D. Ent. Soc. Ont., 39th Rep't, p. 78 



1910 Stebbins, F. A. Springf. Mus. Nat. Hist. Bui. 2, p. 36 



The gall produced by this insect is common in the vicinity of 

 New York City and has erroneously been considered as the work of 

 Lasioptera farinosa. It was first noticed and described 

 by Dr J. B. Smith in 1891, and in 1892 Professor Webster found 

 specimens of the gall quite abundant in the vicinity of Wooster, 

 Ohio. Midges in the National Museum were reared May 24, 1883 

 from material taken at Cadet, Mo. Adults 

 were reared and described by Professor Beu- 

 tenmueller in 1897. This species makes a very 

 characteristic gall on the smaller twigs of the 

 high blackberry and is much more abundant 

 in the vicinity of New York City than in the 

 neighborhood of Albany. Galls of apparently 

 the same species were taken on the stem of 

 a trailing blackberry at Bath, N. Y., April 

 4, 1907. The work of this insect was very 

 common at West Nyack, N. Y., in 1907. 

 The larvae winter in the galls, the adults 

 appearing the latter part of May. The midge 

 may be distinguished from L. farinosa 

 by its nearly uniform, dark brown tarsi and 

 the larger number of antennal segments in 

 both sexes. Reared specimens of this species 

 and L. farinosa were submitted to L'abbe 

 Kieffer, the distinguished European authority 

 on this group. He states that this form is near 

 the European Lasioptera rubi Heeg., Fig. 16 

 which make a very similar gall on blackberry, 

 and that the female of our American species 

 differs therefrom in the absence of hooks on 

 the lobes of the ovipostor. He also indicated several differences 

 between L. farinosa and the species under discussion. P o 1 y g - 

 notus rubi Ashm. and Torymus ostensackeni D. T. 

 have been reared from this fly. 



Lasioptera 

 nodulosa, a series 

 of three ga 1 ls, natural, 

 size (original) 



