June-Oct., 1921 Bulletin of the Brooklyn Entomological Society 95 



It is related to two other oak midges, both with an unusual 

 number of antennal segments, namely, Lasioptera querciperda 

 Felt, which has the third vein uniting with the anterior margin of 

 the wing at the basal third, 28 antennal segments, the tibiae and 

 tarsi mostly reddish or dark brown, unhanded and a cluster upon 

 the lobes of the ovipostor consisting of two exceptionally heavy 

 and many very slender hooks, and L. querciflorae Felt, which has 

 the third vein uniting with the anterior margin at the basal half, 

 33 antennal segments, yellowish or yellowish brown, unhanded, 

 and a cluster on the lobes of the ovipositor consisting of numerous 

 very slender hooks. 



The following description is based upon a specimen mounted in 

 a balsam slide in the National Museum collection and labeled 

 3-2-19, No. 2972 °3, February 10, '83. The structural characters 

 are taken from the preparation and the colorational features 

 drafted from Mr. Pergande's notes, the whole being kindly placed 

 at our disposal by Dr. Howard. 



Female : Length i mm. Antennae extending to the second 

 abdominal segment, sparsely haired, dark brown, 39 seg- 

 ments, the fifth with a length about ^4 its diameter ; terminal 

 segment somewhat produced, with a length a little greater 

 than its diameter and tapering to a broadly rounded apex; 

 palpi, first segment with a length nearly three times its 

 diameter, the second a little longer, more slender, the third a 

 little longer than the second, more slender, the fourth about 

 1/3 longer than the third, more slender. Color when living 

 as follows: "Thorax, underside, abdomen, femora, base of 

 wings and halteres cinnamon brown covered with a whitish 

 pubescence, upper side of thorax with medial two lateral 

 darker lines — three lines freer from pubescence than other 

 portions of the body, wings with costa black except a small 

 whitish spot about midway to apex. Upper side of abdomen 

 black with two large triangular spots of gray upon each seg- 

 ment. Legs and antennae dark with whitish pubescence, 

 former annulated at joints with white." (Pergande.) 



In addition, it may be stated that the basal abdominal segment 

 appears to be white as in related species, and the preparation does 

 not very satisfactorily justify the white annulations unless the 

 latter are restricted mostly to the femoro-tibial and the tibio- 



