ceropalinae: tribe ceropalini 263 



Mount Holly Springs, New Cumberland, Philadephia, and West Fair- 

 view); Prince Edward Island (Brackley Beach in the Canadian 

 National Park); Quebec (Hemmingford, Hull, and Rigaud); Texas 

 (Bexar County, Bui-leson County, College Station, Cypress Mills, Dal- 

 las, Fedor, Giddings, Hunt County, Liberty Hill, Victoria, Waco, and 

 Wolfe City) ; and Virginia (Arlington, Falls Chiu-ch, and Glencarlyn) . 



Most dates of collection are in August and September, a few in July 

 and in the first half of October, and some scattered records earlier in 

 the season. Records outside of July, August, and September are: Apr. 

 16 and 19 at Columbus, Ohio; May 16 at Victoria, Tex.; May 20 in 

 Hunt County and at Wolfe City, Tex. ; May 28 at Liberty Hill, Tex. ; 

 June 4 at Riverton, N. J.; June 8 in Riley County, Kans.; June 25 

 at Baldmn, Kans.; June 26 at Leavenworth, Kans.; Oct. 6 at New 

 Haven, Conn.; Oct. 10 in Brazos County, Tex., and at Arlington, 

 Va.; Oct. 11 at Castle Rock, Pa.; and Oct. 17 at Raleigh, N. C. The 

 seasonal data indicates a single annual generation over most of the 

 range, and two in Texas. Flower records comprise Ampelopsis arborea 

 (three collections). Euphorbia marginata, Stillingia sylvatica, Poly- 

 taenia nuttallii, Aster paniculatus, and Solidago spp. (five collections). 



This subspecies occurs in the Alleghenian and Carolinian faunas. 

 Adults fly mostly in August and September. They are commonly 

 collected on Solidago flowers. 



FEMORALIS GROUP 



Forewing 2.5 to 5.7 mm. long; head large; abdomen small; antenna 

 short and stout; femora rather stout and flattened; longer hairs of 

 frons reclined, long, and conspicuous; longer hairs on mesoscutum 

 long and conspicuous; second to fom'th segments of fore and middle 

 tarsi of male not unusually short, the second segment of the middle 

 tarsus distinctly longer than wide ; last segment of fore tarsus of male 

 with a subapical swelling on the front side; claws on fore and middle 

 tarsi of male with a large, appressed, obliquely truncate tooth, the 

 tooth postmedian on the claws of the middle tarsus and on the hind 

 claw of the front tarsus, and shorter, more pointed, and subbasal on 

 the front claw of the front tarsus; claws on fore and middle tarsi of 

 female with a large, appressed, obliquely truncate, postmedian tooth; 

 male subgenital plate small, elongate with a rounded apex, the lateral 

 edges turned up; female subgenital plate in profile rather triangular 

 with a pointed apex, sometimes mth only a suggestion of a projecting 

 apical part; seventh tergite of male very convex and enclosing the 

 terminalia and cerci. 



This group includes the Nearctic femoralis, hatoda, rugata, and 

 pacijica, and the Mexican C. mexicana Cresson, 1869. The species 

 femoralis occurs south to Panamd. The size, color, and structure of 

 these five are so uniform that without close observation all might 

 pass as a single species. 



