06 NEW YORK STATE MUSEUM 



Professor Mik in the Wiener Ent. Zeitung, 1894, p. 164, says: 



" Dieses Geader lasst sicli ohne Miihe auf jenes der Gattung 



C o r y n o n e 11 r a TMnnertz znruckftihren (Vergi, V. d. 



Wiilp Dipt.— Neederl. 1877. ri.VIIT. fig.6), ohne dass ich 

 hiermit ehva den Bestand der Gattnng Tersestlies anzweifeln 



niochte " Upon comparison of this description with 



that of Leptoconops Sknse, and of pl.35, tig.lO, with flg.14, 

 it will be seen that these genera are certainly very closely related 

 if not identical. The only marked difference is that Lepto- 

 c o n o [( s has two small basal palpal joints while Tersesthes 

 is said to have bnt one (i. e. L e p t o c o n op s has four-jointed 

 and T e r s e s t h e s three-jointed palpi) . Only one species. 



Tersesthes torrens Townsend 

 1893. Tersesthes Town. Psyche. 371 



Female. General color blackish; eyes dark brown; antennal 

 excavations cinnamon color, nearly three times the diameter of 

 first antennal joint; front, face and lancets shining black, the 

 front with four blackish hairs on vertical margin arising from 

 four papillae; antennae black, clothed with Avhitish pubescence; 

 palpi blackish, labium brownish with some whitish pubescence 

 terminally; occi]»ital orbits Avith a few black hairs. Thorax and 

 scutelhim deep shining black, smooth, glabrous, except that the 

 thorax has some scattered black hairs anteriorly. Abdomen soft 

 ()I)aque brown, varying to light brown, in some of the specimens 

 ilavous or rnfous at base; balsam mounts showing two oval black 

 spots (bodies?) at base of fifth segment; ovipositor brownish. 

 Legs blackish, tarsi brownish, tibiae slightly so. AMngs grayish 

 hyaline, with hardly a smoky flavous tinge, the delicate fringe 

 of hind margin somewhat longest on anal angle where it termi- 

 nates abruptly; v<Mns i)ale, excej)t first and second longitudinal 

 veins, which are brown and end in a broAvn stigma on costal 

 margin (the first vein becomes obsolete just before reaching 

 sfigma) ; halteres brownish, knobs Avhitish. 



Lenglh of body (inc. ()\i}tositor ) , one and three-fiftlis milli- 

 meters (empty) to two and one-fiftli millimeters (abdomen 

 distended \\itli Itlood) ; of wing one and one-fifth millimeters. 

 Fi'esh and alcoholic Sjiecimens are slightly longer. Descrilied 

 from both dried and alcoholic sjiecimens and balsam mounts. 

 8ix specimens collected -June 21, on Continental divide, Socorro 

 countv N. Mex., 7000 ft. 



