90 PROC. ENT. SOC. WASH., VOL. 20, NO. 4, APR., 1918 



small, widely separated puncture ; punctures of the scutum closer and some- 

 what larger; scutellum wider than long, angulate posteriorly, with large 

 well denned punctures which are closer posteriorly; mesepisternum with 

 punctures similar in size but closer than those on the scutum; tergum 

 highly polished dorsally but laterally with some poorly defined punctures; 

 nates shining, with some scattered punctures; sheath seen from below 

 with its apical width less than the distance from the base of pad-like brush 

 to apex of sheath, the pad-like area elongate and well separated from tHe 

 median ridge; inner tooth of claw erect and well removed from the base; 

 tarsi of normal length, the hind basitarsis distinctly longer than its apical 

 width. Black; apex of clypeus, labrum, palpi, angles of pronotum and 

 upper part of mesepisternum dirty white; legs black, apices of coxae, and 

 femora, bases of tibiae and all of the tarsi whitish; wings hyaline, irides- 

 cent, venation dark brown. 



The female varies as follows: Antennae 17-19-jointed; middle fovae 

 faintly indicated; vertex slightly piceous; ventral aspect of tergites some- 

 times whitish; sheath beneath more or less ferruginous. 



Male. Length 4.5 mm. Depressed margin of the clypeus narrower than 

 antennae 22-jointed; sternites, including hypopygidium, with distinct 

 in female and only slightly emarginate; head and thorax about as in female; 

 punctures; hypopygidium obtusely rounded apically. Black; labrum, 

 four anterior femora beneath apically, tibiae and tarsi whitish. 



In the male the legs may be pale beyond the coxae. 



Type-locality. Boulder Junction, Wisconsin. Described from 

 three females (one type) and two males (one allotype) reared from 

 larvae collected on Jack pine (Pinus banksiana) by S. A. Rohwer, 

 and recorded under note number Hopk. U. S. 10188. 



Type. Cat. No. 21774, U. S. Nat.Mus. 



Date of Publication, September 27, 1918 



