466 



U. S. NATIONAL MUSEUM BULLETIN 216 



PART 3 



Figures 256, 257.- 



-Localities: 256 (left), Messatoporus discoidalis; 257 (right), 

 M. compTessicornis. 



leg whitish, sometimes mth a fuscous stripe on upper side of coxa, 

 with a brown stripe on upper side of femur, and last segment of tarsus 

 light brown; middle coxa, trochanters, and femur light fulvous, the 

 coxa with whitish areas; middle tibia and tarsus stramineous, the 

 last segment of tarsus brown; hind trochanters and femur fulvous, the 

 second trochanter brownish fulvous; hind tibia fulvous, its apical 

 0.3 ± progressively more strongly infuscate toward apex; hind tarsus 

 white, the basal 0.2 of first segment fuscous. 



There is some doubt about the type of discoidalis. It may be a 

 specimen of M. rufiventris with unusual coloration. 



Specunens (34 cf, 409): From Georgia (Satolah at 2,600 ft.); 

 Illinois (Rockford) ; Kansas (Lawrence and Riley Co.) ; Maryland 

 (Plummers Island, Silver Spring, and Takoma Park) ; Michigan (Ann 

 Arbor) ; Minnesota (St. Louis Co.) ; Missouri (Columbia) ; New Hamp- 

 shire (Wilton) ; New Jersey (MoorestoAvn) ; New York (Bemus Point, 

 Bethany, Greene Co., Ithaca, and Ludlowville) ; North Carolina 

 (Maxton and Wake Co.); Ohio (Puritas Springs in Cuyahoga Co. 

 and Westerville) ; Pennsylvania (Carlisle Junction, Lancaster Co., and 

 Paupack) ; Quebec (Montreal Island) ; South Carolina (McClellan- 

 ville and Mountain Rest); Texas (Victoria); Virginia (Arlington, 

 Galax, Vienna, and Westmoreland State Park) ; West Virginia (Cheat 

 Mt. in Randolph Co. at 2,000 ft.); and Wisconsin (Madison). 



This species emerges later than M. rufiventris. It is on the wing 

 from early summer to mid-faU. Early and late dates of collection are : 

 May 8 at Lawrence, Kans.; May 17 and 18 at McClellanville, S.C.; 

 June 7 at Takoma Park, Md.; June 17 at Westerville, Ohio; June 24 

 at Ithaca, N.Y.; September 29 at Ithaca, N.Y. ; October 6 at Silver 

 Spring, Md.; and November 8 on Plummers Island, Md. 



