412 CONNECTICUT GEOL, AND NAT. HIST. SURVEY [BulL 



P. osborni (Alex.) 



1914. LimnophUa osborni Alexander: Proc. Acad. Xat. Sci. Phil- 

 adelphia. 1914: 596-597. 



Figs. — Alexander, Ih'id., pi. 25, fig. b (.wing) ; 1914. Alexander, Cfls. N. Y., 1, 

 pi. 40, fig. 154 (wing) ; 1919. Dickinson, Cfls. Wise, p. 206, fig. 104 (wing, as 

 recondita), 1932. 



General coloration of niesonotum rich reddish brown, the poste- 

 rior sclerites slightly pruinose; lateral portions of praescutum and 

 scutum brownish black; pleura reddish yellow with a black lon- 

 gitudinal stripe. Femora yellowish brown, the tips weakly darkened. 

 Wings with a brownish tinge, produced chiefly by vague seams along 

 the veins; stigma a little darker; Ro clo.se to fork of ^2+3 + 4- Abdom- 

 inal tergites brown, becoming still darker on outer segments: a black- 

 ened subterminal ring; hypopygium obscure yellow. $. L. 6.3-6.5 

 mm.; w. 7.4-7.5 mm. 



(Late Aug., Sept.) Me., westw. to Wise, and the Rocky Mts. of Wyo. and Colo. 

 This species is closely allied to the European P. mcridiana (Staeger). 



P. quadrata {O. 8.) (Fig. 44. G). 



1859. LimnophUa quadrata Osten Sacken; Proc. Acad. Xat. Sci. Phil- 

 adelphia, 1859 : 241. 



Figs.— Osten Sacken, Mon. Dipt. N. Amer., 4, pi. 2, fig. 9 (wing) ; 1869. Snod- 

 grass. Trans. Amer. Ent. Soc, 30, pi. 9, fig. 18; pi. 10, fig. 34 (hvp.) : 1904. Alex- 

 ander, Psyche, 18, pi. 16, fig. 2 (ven.) ; 1911. Alexander, Cfls. N. Y., 1, pi. 40. 

 fig. 153 (wing) ; 1919. 



Praescutal stripes lacking or ill-defined. Antennae Ijlack through- 

 out. Femora obscure yellow, passing into brown at tips. Wings 

 (Fig. 44, G) with a brownish yellow suifusion, the base and costal re- 

 gion clearer yellow ; stigma pale ; Scy ending about opposite two-thirds 

 Rs\ Bo close to fork of B2+S+4. Abdomen black, sparsely pruinose; 

 hypopygium rusty-red. S. L. 7-8 mm.; av. 8-9 mm. ?. L. 10-11 

 mm.; w. 9-10 mm. 



(May-early Aug.) Ont., Que., N. B., Me., N. H., Vt., Mass., N. Y., westw. to 

 Mich, and la., southw. to Ga., n. Fla. and Tenn. 



Connecticut.— Granby, June 8, 1929 (C. P. A.) ; Hamden, June 11, 1914 (W. E. B.); 

 Natchaug State Forest, June 14, 1933 (C. P. A.); New Haven. May 31, 1929 (R. 

 B. F.); Putnam, June 15, 1933 (C.P. A.); Southington, May 28, 1930 (R. B. F.): 

 Tunxis State Park. June 12, July 23, 1931 (C. P. A.) ; Tyler Lake, June 13, July 23, 

 1931 (C.P. A.); Winsted, June 10, 1928 (R. B. F.). 



P. recondita (O. S.) 



1SG9. LimnophUa recondita Osten Sacken: Mon. Dipt. X. Amer., 4: 

 212-213. 



Figs.— Alexander, Cfls. N. Y., 1, pi. 38, fig. 123 (ven.) : 1919. Dickinson. Cfls. 

 Wise, p. 206, fig. 105 (wing, as osborni) ; 1932. 



Antennae obscure yellow, the outer segments darkened. Halteres 

 and legs obscure yellow. Wings with stigma scarcely differentiated: 

 8ci ending shortly before to nearly opposite the fork Of Rs\ R,, some 

 distance beyond fork of ^2+3 + 4; cell M^ deep. Abdomen, including 



