114 NEW YORK STATE MUSEUM 



aa Abdomen reddish, yellowish brown or pale orange 

 b Third vein uniting with costa at the basal third 



' c Abdomen nearly unicolorous; antennal segments, female 18. ., 



quercina Felt, C. 96 

 bb Third vein uniting with costa near the basal half 



c Abdomen yellowish brown; antennal segments, male 18 



viburni Felt, C. 186 

 cc Abdomen yellowish orange; antennal segments, male 14, the fifth 

 with a length one-half greater than its diameter; reared from blis- 

 ter gall on Spiraea spiraeafolia Felt, C. ai 860 



ccc Abdomen pale yellowish, second to sixth segments basally dark 

 brown, antennal segments, female 26; reared from blister mine in 



Crataegus leaf excavata Felt, ai576 



bbb Third vein uniting with costa at the distal third 



c Abdomen yellowish brown; antennal segments, male 17; reared from 

 wild sunflower seeds murtfeldtiana n. sp., C. 902 



Lasioptera portulacae Felt 



1911 Felt, E. P. Psyche, 18:84-85 



This midge was reared from a stem gall on purslane, Portulaca 

 oleraceae Linn, by William H. Patterson, formerly of the Agricul- 

 tural School, St Vincent, W. I. 



Lasioptera ventralis Say 



1824 Say, Thomas. Long's 2d Expedition, 2:357 

 1883 Complete Writings, 1 1242 



There is no certainty as to the generic position, of this species. We 

 have provisionally referred it to the genus Lasioptera. It was 

 captured in a garden at the University of Pennsylvania. 



Lasioptera allioniae Felt 

 1911 Felt, E. P. Econ. Et. Jour., 4:482 



This dark, white-spotted species with the third vein uniting with 

 costa at the basal third, was reared in June 1908 by Mr E. Bethel 

 from an irregular, subfusiform stem gall on Oxybaphus (Allionia) 

 taken at Boulder, Col., and kindly placed at our disposal by Prof. 

 T. D. A. Cockerell. 



Gall. Length 1.5 to 2 cm, irregularly swollen and apparently 

 always near a joint. The interior is spongy and presumably 

 irregularly mined by the larvae. See above citation for description 

 of the two sexes. 



