NO. 2105. NEW SPECIES OF HYMENOFTERA—ROHWER. 207 



and posterior tarsi stramineous: wings yellowish hyaline, venation 

 except the yellow costa black. 



El Paso County, Colorado. Described from one female collected 

 June 14. 1914, by A. B. Champlain. 



Type.— eat. No. 18556, U.S.N.M. 



Genus TENTHREDELLA Rohwer. 

 TENTHREDELLA TURNERI, new species. 



This species is related to TenthredeUa mordax (Konow) but may be 

 differentiated from that species by the yellow angles of the pronotum 

 and yeUow tegulae. From TenthredeUa cyanata (Konow) to which it 

 is probably closest, this species may be separated by the color of the 

 wings and different vertex which can not be said to be "quadrato, 

 medio-sub-carinato." 



Female. — Length, 11.5 mm. Anterior margin of the labrum ob- 

 tusely pointed; clypeus convex, apical margin with a U-shaped 

 emargmation, the lobes broad, truncate; supraclypeal area depressed; 

 supraclypeal foveae obsolete; antemial foveae well defined dorsaUy 

 but reduced ventraUy; antennal furrows shallow beyond the foveae; 

 frontal basm deep, well defined, the bottom glabrous, the waUs extend- 

 ing dorsaUy to the anterior ocellus; ocelli in an equilateral triangle; 

 postoceUar area weU defined laterally, wider by one-fourth than the 

 cephal-caudad length; postocellar furrow obsolete; head subopaque, 

 finely granular, the median area around the basin and the posto- 

 cellar area with coarser granulation: antennae long, filiform, third 

 and fourth joints subequal in length: mesoscutum and prescutum 

 granular, opaque; scutellum strongly convex, granular but more 

 closely so than the scutum; scutellar appendage without a well defined 

 longitudinal carina; mesepisternum sculptured like the scutum; 

 stigma narrow, tapering; third cubital cell longer than the first two 

 combmed, its apical width as great as two-thirds its length on the 

 radius; abdomen finely transversely aciculate; sheath parallel-sided, 

 narrow, apex sub truncate. Black, abdomen blue; clypeus, labrum, 

 mandibles except teeth, spot below the eye, posterior angles of the 

 pronotum and tegulae, pale stramineous; legs stramineous; apex of 

 the four anterior femora, the four anterior tibiae above, apex of the 

 posterior femora above, the four anterior tarsi, the posterior tibiae 

 and their tarsi, black wings dusky hyaline, the posterior pair paler; 

 venation black. 



Male. — Length, 9.5 mm. Differs from the female only in having 

 the four anterior femora with the black line complete. 



Shillong, Assam. Described from one female, type, and one male, 

 allotype, collected September, 1903, by R. E. Turner, for whom the 

 species is named. 



Type.—Csit. No. 18532, U.S.N.M. 



