444 CONNECTICUT GEOL. AND NAT. HIST. SURVEY [Bllll. 



be called cana\ the very numerous American records of hyhrida all 

 pertain to the species considered below. 



Symplecta cana (Walker). (Fig, 47, N). 



1804. Liinonia hyhi^ida Meigen; Klass., 1:57, pi. 3, fig. 17. (Erron- 

 eous for American records). 



1818. Lhimobia functipennis ]\Ieigen ; Syst. Beschr. ZAveifl. Ins., 1 : 

 147. (Erroneous for American records). 



1848. Z. cana Walker; List Dipt. Brit. Mus., 1:48. 



Figs. — Osten Sacken, Mon. Dipt. N. Amer., 4, pi. 1, fig. 20 (wing) ; 1869. 

 Snodgrass, Journ. N. Y. Ent. Soc, 11, pi. 11, fig. 15 (ovipos.) ; 1903. Snodgrass, 

 Tran.s. Amer. Ent. Soc, 30, pi. 8, figs. lO, 12 (hyp.) ; 1904. Needham, 23rd Rept. 

 N. Y. St. Ent. for 1907, pi. 24, fig. 1 (ven.) ; 1908. Williston, Man. N. Amer. 

 Dipt., Ed. 3, fig. 23 (entire insect), fig.: 25, sub 21 (wing) ; 1908. Alexander, Cfls. 

 N. Y., 1, pi. 2,1, fig. 98 (wing) ; 1919. Crampton, Insec. Inscit. Menst., 13, pi. 2, 

 fig. 2; pi. 3, fig. 12 (thorax) ; 1925. Dickinson, Cfls. Wise, p. 194, fig. 78 (wing) ; 

 1932. 



General coloration gray, the praescutum with three brown stripes. 

 Wings subhyaline, with a ver}^ restricted grayish brown pattern that 

 is confined to the vicinity of the veins (Fig. 47, N). $ . L. 4-5 mm.; 

 w. 5-6 mm. $ . L. 5-7 mm. ; w. 5.5-8 mm. 



(Late Feb. and Mar., into Spring; recurring in Fall) Almost universally dis- 

 tributed throughout the United States and Canada. 



Connecticut.— East River, Julv 16, 1911 (Ely); Granby, Sept. 4, 1928 (G. C. C); 

 Hamden, Mar. 30, 1930 (R. B. F.) ; Middletown, Apr. 4-7, 1929 (R. C. N.) ; Nor- 

 folk, June 9, 1929 (C. P. A.) ; Riverton, June 8, 1929 (C. P.A.). 



Trimicra Osten Sacken 



1861. Tri/micra Osten Sacken; Proc. Acad. Nat. Sci. Philadelphia, 

 1861 : 290. 



A small genus, including a single wide-spread species, filipes 

 (Fabr.), with other closely allied species, or perhaps races, in many 

 parts of the World. I am considering the local fly as being a sub- 

 species of pilipes. Similar representatives of the genus occur virtually 

 throughout the entire Globe, including many of the most remote oce- 

 anic islands. The early stages occur in wet earth, near water. 



In many parts of the World, a surprising range in size and relative 

 pilosity is to be found within members of this group. This has led to 

 the belief that even in a restricted area two or more species occur, 

 but all of these seem to refer to the single fly, pUipes. 



Edwards now considers Trimicra as being a subgenus of Erioptera. 



Trimicra pilipes anomala O. S. (Fig. 50, A). 



1861. Tri'trdcra anomala Osten Sacken; Proc. Acad. Nat. Sci. Phil- 

 adelphia, 1861 : 290. 



Figs. — Osten Sacken, Mon. Dipt. N. Amer., 4, pi. 2, fig. 1 (wing) ; 1869 (as 

 pilipes). Snodgrass, Trans. Amer. Ent. Soc, 30, pi. 8, fig. 9 (hyp.) ; 1904. Alex- 

 ander, Cfls. N. Y., 1, pi. 37, fig. 99 (ven.) ; 1919. 



General coloration buffy, the praescutum almost covered by three 

 confluent gray stripes, with an additional velvety-black capillary me- 

 dian vitta. Pleura with brown and yellowish longitudinal lines. Legs 



