No. 64] DIITERA (Jr CONNECTICUT: TAXONOMY 345 



Key to Species 



1. Dark searn along vein> Cu not extending distad beyond the approximate level 



of the cord: intermediate praescutal stripes broad and almost confluent. 



contermina 

 Dark seam along vein Cu extended distad onto the outer section of vein 

 Ctii ; intermediate praescutal stripes distinct 2 



2. Dark seams along- Cu and the cord broad, the former extending the entire 



length of the vein and thus attaining the wing-margin ; intermediate prae- 

 scutal stripes darker in color than the laterals albivitta 



Dark seams along Cu and the cord narrow, the former ending at about mid- 

 length of the distal section of vein Ciii, not attaining the wing-margin ; 

 intermediate praescutal stripes concolorous with the laterals margarita 



While the i)re.sent report was in press, a fourth species of Pedicia 

 has been added to the present faunal area. This has been described as 

 Pedicm {Pedicia) proctet^iana Alexander (Bull, Brooklyn Ent. Soc, 

 36; April 1939). By the above key, the species runs to contermina, 

 from which it is distino:uished by the very deep cell il/4 of wings and, 

 especially, by the distinct structure of the male hypopvgium. It is 

 known only from Ontario (Ide) and Mount Desert Island, Me. (Wil- 

 liam Procter). This species is on the wing; from late ^lay into July. 



Pedicia {Pedicia) albivitta Walker. 



1848. Pediaa alUvitta Walker; List Dipt. Brit. Mus., 1 : 37. 



Figs.— Aldrich, Psvche, 7:201, text-t^g. (wing); 1895. Necdham, 23rd Rept. 

 N. Y. St. Ent. for 1907, pi. 26, fig. 1 (ven.) : 1908. Williston, Man. N. Amer. Dipt.. 

 Ed. 3:80, fig. 1 (wing); 1908. Alexander, Cfls. N. Y.. 1, pi. 42, fig. 175 (wing): 

 1919. Young, Cornell Univ. Agr. Expt. Sta. Mem. 44:283, pi. 9, figs. 1, 2 (thorax) : 

 1921. Dickinson, Cfls. Wise, (col. frontispiece, ad. $); 1932. 



Mesonotum whitish gray; pleura light gray, the dorso-pleural re- 

 gion blackened. Antennae short, scape brown, flagellum ol)scure yel- 

 low. Head gray, with a small dark vertical tubercle. Halteres pale. 

 Femora yellow, tips conspicuously blackened. Abdomen whitish graj'', 

 the tergites with triangular or diamond-shaped darker gray areas that 

 are bordered by rusty-3'ellow, this color most extensive at incisures. 

 $ . L. 24-28 mm. ; w. 23-24 mm. 9 . L. 30-35 mm. ; w. 23-27 mm. 



(July-Sept.) Ont., Que., N. S., Me., N. H., Vt., Mass., N. Y., Pa., westw. to Man., 

 Minn., Wise, la.. Mo. and Kan., southw. to Va.. N. C, and S. C. 



Connecticut.— Cornwall Bridge, Aug. 9, 1931 (C. P. A.); E. Hartland, Sept. 11. 1928 

 (C. P.A.); East River, Sept. 10 (Ely): New Haven, Sept. 12, 1904 (B. H.W.): 

 New London (O. S.) ; Salisbury, Aug. 27, 1904 (W. E. B.), Sept. 5, 1928 (G. C. 

 C). Sept. 12, 1928 (C. P. A.): Storrs, 1929 (L. S.): Twin Lakes, Sept. 12, 1928 

 (C. P. A.): W. Granby, Sept. 11, 1928 (C. P. A). 



P. {Pedicia) contermina Walk. 



1848. Pedicia contermina AValker; List Dipt. Brit. Mus., 1:38. 



Fig.— Alexander, Cfls. N. Y., 1, pi. 42, fig. 176 (wing) ; 1919. 



Long held to be a mere variation of albivitta, now known to be 

 distinct. Wings with the pale brownish yellow costal border extend- 

 ing to beyond the stigma. S. L. 26-30 mm.: w. 25-26 nnn. 9. L. 

 28-30 mm, ; w\ about 26 mm. 



(Mav-Julv) Que.. N. S., Me.. N. H., Vt., Mass.. N. Y., westw. to Alich.. southw. 

 to N. C. ' 



