REPORT OF THE STATE ENTOMOLOGIST 1916 1 63 



Female. Length 2 mm. Antennae short, dark brown, comp 

 of 23 to 24 segments, the fifth with a length about three-fourths 

 its diameter; terminal segments indistinctly fused. Palpi; first 

 segment probably short, stout, the second presumably narrowly 

 oval, stout, the third subrectangular, with a length about twice 

 its diameter, the fourth twice the length of the third, slender. Color 

 and other characters about as in the male, except that the abdomen 

 is somewhat lighter and with broader, white bands. Ovipositor 

 half the length of the abdomen, the terminal lobes long, slender, 

 narrowly oval. Type Cecid. 901. 



Lasioptera inustorum Felt 

 1916 Felt, E. P. N. Y. Ent. Soc. Jour., 24:182 



Midges were reared in May 19 15 by Mr C. N. Ainslie from black- 

 ened leaf sheaths of Panicum virgatum collected at Elk 

 Point, S. D. This species runs in our key to L. impatient i- 

 f olia Felt, a form which also produces a carbonaceous discolor- 

 ation of the vegetable tissues. The most striking difference between 

 the two is in the much produced lobes of the ovipositor in the western 

 midge. The leaf sheath of infested plants is marked by a diffuse 

 blackening near the base. The affected area may have a length of 

 3 cm and extend more than half way around the stem, the latter 

 being unaffected. Larval cells occur within the blackened tissues, 

 the larvae sheltering in tubular, silk-lined cavities some 5 to 6 mm 

 long. 



Lasioptera neofusca Felt 



1908 Felt, E. P. N. Y. State Mus. Bui. 124, p. 327 



This insect was taken May 25, 1906 on a train entering Albany, 



N.Y. 



Female. Length 1.5 

 mm. Antennae dark 

 brown; 22 segments, 

 the fifth with a length 

 about three-fourths its 

 diameter; terminal seg- 

 ment slightly pro- 

 longed, ovoid. Palpi; 

 the first segment short, 

 irregularly rectangular, 

 slightly swollen dis- 

 tally, the second one- Fig. 29 Lasioptera neofusca, basal 

 half longer than the portion of ovipositor showing the dorsal chitinous 

 preceding, the third bars, enlarged (original) 

 more slender, slightly 



longer, the fourth one-third longer than the preceding, more slender; 

 face yellowish brown, eyes large, black, margined on the sides' 

 6 



