CHARLES W. METZ, 123 



Anterior tibise in front basal third of middle and hind tibise, and 

 basitarsi yellow ; remaining tarsi brown. 



Genitalia. — Armature rather stout; cardo short, broadly rounded at 

 apex ; stipes stout, superior lobe not abrupt but rounding at distal 

 end, rather short ; apical portion stout, rounded, with long hairs ; 

 sagittal rods appearing narrow from above when in their normal posi- 

 tion, ending about even with stipites ; volsella comparatively small, 

 (fig. 12). Eighth ventral plate short, simple, hairless; basal piece 

 normal ; distal pedicel short, truncate, slightly broadened at apex, 

 (fig. 25). Seventh ventral plate stout ; wings short, pointed at apex, 

 without membranous flap ; basal lobe prominent, almost as large as 

 remainder of wing ; apical portion with few long hairs, especially near 

 tip ; extremity of basal lobe with a tuft of short hairs, (fig. 69). 



Typical Fetnale. — Rather large, about 6 mm. long ; stout, face 

 broad ; lateral areas below comparatively broad, as in the male ; 

 supraclypeal area below antennal sockets twice as broad as long, much 

 broader than lateral areas at same level ; scape long narrow. 



Sculpture. — Similar in general to that of male. Occiput almost 

 smooth ; mesoscutum with quite small punctures ; mesopleura with 

 small sparse punctures, separated by twice the diameter of one punc- 

 ture. Abdomen impunctate ; first segment polished. Otherwise as in 

 male. 



Yellow Markings. — Lateral areas of face each with a broad, short 

 irregular blotch, extending from level of antennal socket down almost 

 to the narrowest point of the lateral area, not touching eyes or clypeus, 

 (fig. 136). Tubercles, two lines on collar, and base of tibia? j'ellow. 



Var. MiNYRA (Lov.). 

 Male. — Difi^ers from the typical form in being_very small, only about 

 4 mm. in length, and in having long upper extensions of lateral face 

 marks of almost uniform width, (fig. 100). 



Var. iLLiNOiENSis (Rob.). 

 Male. — Differs from typical form in having face marks not pointed 

 on eye margin, but slightly separated at apex, and often stouter. 



Habitat. — Practically all of North America except the 

 Pacific coast. 



Specimens examined : about 250. Localities include Wise, 

 Me., Ind., Pa., Mass., Mich., 111., Neb., Colo., Tex., Va. and 

 Queb. Males dissected : about 30. Plants recorded as visited 

 by this species : Aralia, Solidago, Rubus, and Eupatorimri . 



This is an exceedingly variable species in size, markings, 

 sculpture, and somewhat in genitalia. Some specimens 

 from Texas, a number from Wisconsin, and a few from other 



TRANS. AM. ENT. SOC, XXXVII. 



