96 NEW YORK STATE MUSEUM 



Professor Mik in llie Wiener Ent. Zeitung, 1894, p.l64, says: 



" Dieses Geader liisst sich ohne Miihe auf jenes der Gathing 



(; o r y n o n e 11 r a W'innertz znruckfiihren (Vergl. V. d. 



^Yulp Dipt.— Neederl. 1877. ri.YTTT. fig.6), ohne dass idi 

 hiermit etwa den Bestand der Gattnng Tersestlies anzweifeln 



mochte " Upon comparison of this description with 



that of Le])toconops Skuse. and of ii].35, fig.lO, with fig.14. 

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

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

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

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

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



Tersesthes torrens Town send 

 1893. Tersesthes Town. Psj^che. 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 whitish pubescence; 

 palpi blackish, labium brownish with some whitish pubescence 

 terminally ; occi])ital orbits with a feA^• black hairs. Thorax and 

 scutelhim deep shining black, smooth, glal»rous, except that the 

 thorax has some scattered black haiis anteriorly. Abdomen soft 

 ojiaque brown, varying to light brown, in some of the specimens 

 flavous or rufous at base; balsam mounts showing two oval black 

 sj»ots (Iwdies?) at base of fifth segment: ovipositor brownish. 

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

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

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

 nates abrujttly; veins ])ale, except first and second longitudinal 

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

 margin (the first vein l^ecomes obsolete just before reaching 

 stigma) ; lialtei-es brownish, knobs whitish. 



Length of body (Jtic. oviiiosit(»r t , om^ and fliree-fifths milli- 

 meters (empty) to two and onc-tiflli millimeters (abdomen 

 distended with blood) ; of w ing one and one-fifth millimeter. 

 Fi-esh and al((»li(»lic specimens are slightly longer. Described 

 from both dried und alcoholic sjtecimens and balsam mounts. 

 Six specimens coUccted -Tune 21, on Continental divide. Socorro 

 count v N. Mex., 7000 ft. 



