104 INSECUTOR INSCITI^ MENSTRUUS 



Greeleyella potentillae, new species. 



Male. — Length 5 mm. Black, head and thorax with rather 

 abundant long whitish pubescence; clypeus, knees, anterior 

 tibiae in front and all tarsi, light yellow; process of labrum 

 large, broadly rounded ; clypeus with large scattered punctures, 

 rest of head almost impunctate, except along lower inner 

 orbits ; head, except clypeus, finely lineolate, medially above 

 antennae almost granular; antennae reaching beyond tegulae, 

 flagellum reddish, somewhat dusky above ; mesothorax lineo- 

 lated, the notum with fine scattered punctures ; propodeum 

 almost granular, basally with a few rugae ; tegulae dark with a 

 light spot ; wings almost hyaline, stigma and nervures honey 

 color, margin of stigma darker, the costa and subcosta dark 

 brown ; second submarginal about two-thirds as long as first ; 

 first recurrent interstitial (or slightly before or beyond base 

 of second submarginal cell) ; legs black with white pubescence; 

 abdomen finely lineolate, with scattered minute punctures, with 

 scanty short, slightly ochraceous pubescence. 



Female allotype. — Length 5.5 mm. Similar to male but with- 

 out yellow markings ; face below antennae with large scattered 

 punctures, above with fine scattered punctures ; flagellum red- 

 dish, darker above, mesonotum with scattered rather large 

 punctures ; wings slightly dusky, nervures darker than in male ; 

 spot on knees yellow, tarsi testaceous; scopa slightly ochra- 

 ceous ; sculpture of abdomen as in male, hair at apex of abdo- 

 men yellow. 



Type locality, Camp Springs, Maryland, May 11, 1916. 



Other localities : Cabin John, Maryland, May 23, 1911 (two 

 males, P. R. Myers, coll.) ; Accotink, Virginia, May 18 (one 

 female, on Potentilla, S. A. Rohwer, coll.). 



Type, Cat. No. 20621, U. S. Nat. Mus. 



Described from 6 males and 17 females, the types a pair 

 in coitu ; 7 females and 1 male taken on Potentilla pumila by 

 the author, 8 females on the same^ flower by Mr. A. H. Pottin- 

 ger, the types and 2 males taken by the author without flower 

 record. 



