428 U. S. NATIONAL MUSEUM BULLETIN 216 



Male: Indistinguishable from the male of M. atrata lineata. 



Female: Upper hind corner of pronotum sometimes with a small 

 yellow mark, the thorax otherwise entirely black; wings blackish or 

 strongly infuscate. 



Specimens (2719): From Arkansas (Clinton); Connecticut (Litch- 

 field); District of Columbia (Rock Creek Park); Florida; Georgia 

 (Atlanta); Illinois (Moline and Willow Springs); Indiana (Elkhart, 

 Hanover, and Oliver Lake in Lagrange Co.); Iowa (Iowa City and 

 Madison Co.); Kansas (Baldwin City, Lawrence, Madison, and 

 Ottawa); Maryland (Plummers Island and Takoma Park); Massa- 

 chusetts (Cambridge and Forest Hills) ; Michigan (Ann Arbor, Clare 

 Co., Clinton, East Lansing, George Reserve in Livingston Co., Huron 

 River in Washtenaw Co., Ingham Co., Midland Co., Oakland Co., 

 Oceana Co., Scio Township in Washtenaw Co., Warren Woods in 

 Berrien Co., and Wayne Co.); Minnesota (Beltrami Co., Crookston, 

 Duluth, Excelsior, Farmington, Garrison, Glenwood, John Latsch 

 State Park in Winona Co., Lyon Co., Mendota, Minneapolis, Missis- 

 sippi bluffs in Houston Co., Newport, Norman Co., Polk Co., Preston, 

 Roseau, St. Paul, Spring Grove, Staples, Waterville, and Winnebago 

 Creek Valley in Houston Co.); Missouri (Creve Coeur Lake in St. 

 Louis Co., Van Buren, Webster Groves, and Willard); New Jersey 

 (Allaire State Park in Monmouth Co., Boonton, Branch ville, Engle- 

 wood, Moorestown, Paterson, and Princeton); New York (Bronx- 

 ville, Fort Montgomery, Greenwood Lake, North Beach on Long 

 Island, Poughkeepsie, Rockland Co., Taughannock Falls near Ithaca, 

 Van Courtland Park in New York City, West Farms in New York 

 City, and Wyandanch); North Carolina (Raleigh and valley of the 

 Black Mts.); Ohio (Cedar Point, Columbus, Hinckley in Medina Co., 

 Logan Co., and Put-in-Bay); Ontario (Pelee Island); Pennsylvania 

 (Angora in Philadelphia Co., Camp Deer Creek, Charter Oak in 

 Huntingdon Co., Easton, Eberly's Mill in Cumberland Co., Guyasuta 

 Run in Pittsburgh, Jeannette, Linglestown, Manor, Markleton, 

 Mount Blaine near Canonsburg, Ohiopyle, Overbrook, Philadelphia, 

 Pittsburgh, Portersville, Rockview in Centre Co., Slippery Rock, and 

 Spring Brook) ; South Dakota (Black Hills and Yankton) ; Tennessee 

 (Chattanooga); Texas (Dallas); Virginia (Allegheny Springs, Dead 

 Run in Fairfax Co., Great Falls, Petersburg, and Stone Creek in 

 Lee Co.) ; West Virginia (Lost River State Park in Hardy Co., along 

 mountain ridge near Crumpler in McDowell Co., and Preston Co.); 

 Wisconsin (Madison and Worden Township in Clark Co.); and 

 Wyoming (Sheridan) . There are a large number of males taken with 

 these females, or in the same general area. They can be assigned to 

 the subspecies on the basis of locality, but are not listed because they 

 are indistinguishable as specimens from the subspecies lineata. 



