268 U- S. NATIONAL MUSEUM BULLETIN 209 



The tibial spurs are dusky stramineous and the front legs usually 

 tinged with fulvous, especially on the tibia. 



Specimens: 4cf , 39, from Washington, D. C, July 25, 1948, and 

 Aug. 9, 13, 14, 29, and 31, 1946, M. Vogel (Vogel and Townes). cf , 

 2 9, Washington, D. C, June 7, 1947, July 30, 1948, and Sept. 5, 1948, 

 D. Shappirio (Shappirio). cf , Great Falls (near Washington, D. C), 

 Md., July 12, N. Banks (Cambridge). 9, Rochester, Minn., Aug. 

 23, 1935, C. E. Mickel (St. Paul). &, Farmingville, Long Island, 

 N. Y., Aug. 28, 1937, K. V. l&ombein (&ombein). cf, Arlington, Va., 

 Aug. 31, 1947, K. V. Krombein (Krombein). 2 9 trailing on the 

 ground about 2.5 cm. behind a female of Ageniella partita (not carrying 

 a spider), Dunn Loring (near Vienna), Va., July 13, 1950, K. V. 

 Krombein (Krombein) . 5 cT , on Liriodendron honeydew, Dunn Loring, 

 Va., vSept. 4, 5, and 11, 1949, K. V. Krombein (Krombein and Townes). 

 17 cf, 49, Falls Church, Va., July 12, 14, 16, 21, 22, and 24, and Aug. 

 2, 6, 9, 20, and 28, N. Banks (Cambridge). 



This species has been taken from New York to North Carolina and 

 in Minnesota. Ageniella partita appears to be one of its social hosts. 

 Adults are recorded from June 7 to Sept. 11. 



FULVIPES GROUP 



Forewing 4.5 to 8.5 mm. long; body and legs rather stout; antenna 

 of moderate length; longer haks of frons suberect, rather short and 

 sparse; longer hairs on mesoscutum short, inconspicuous; second to 

 fourth segments of front and middle tarsi of male very short and 

 broad, the second segment of the middle tarsus not or hardly longer 

 than broad; last segment of fore tarsus of male with a strong, rounded 

 swelling on the front side; tarsal claws of male specialized as follows: 

 front claw of front tarsus with a large triangular lobelike, appressed 

 basal tooth; hind claw of front tarsus with a median appressed lobe- 

 like tooth ; front claw of middle tarsus with a large lobelike tooth that 

 is strongly appressed to the claw; hind claw of middle tarsus with a 

 large, erect, triangular, subapical tooth. Claws of fore and middle 

 tarsi of female with an acute upright subapical tooth; male subgenital 

 plate triangular, with an acute apical point; female subgenital plate in 

 profile with a projecting apical part, the apex of which is evenly 

 rounded; male cerci vestigial, concealed within the seventh tergite. 



This group includes the Nearctic brevlcornis, neomexicana, and 

 fulvipes. 



12. Ceropales brevicornis Patton 



Ceropales brevicornis Patton, 1879, Bull. U. S. Geol. Geogr. Surv. Terr. No. 5, 

 p. 368, c?. Tjrpe: cf, northwestern Kansas (lost). 



Forewing 4.5 to 8 mm. long; frons with close, fine punctures and 

 scattered larger punctures that are separated by an average of about 



