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



Mesonotum reddish, unmarked with darker, in cases with black stripes ; 

 male hypopygium with the spine of basistyle large, apical in position ; 

 outer dististyle at midlength bearing a lateral branch ; aedeagus termi- 

 nating in a long straight apical spine immaculata 



3. Wings with cell R2 at margin more extensive than is cell Ri ; thoracic 

 pleura chiefly pale brown, with an indistinct darker brown longitudinal 

 stripe carolinensis 



Wings with cell Rt at margin more extensive than cell R2; thoracic pleura 

 black, with a whitish longitudinal stripe passing beneath the halteres. 



lucida 



Teucholabis {T eucholahis) carolinensis Alex. 



1916. T eucholahis carolmenms Alexander: Can. Ent., 48:44. 



Lateral margins of praesciitmn and the thoracic pleura chiefly 

 yellow, with a dorsal blackish pleural area that extends backward 

 about to tlie level of the wing-root. Wings with branches of Rs ex- 

 tending generally parallel to one another. S. L. 4-4.2 mm.; w. 3.8-4 

 mm. 



(Aug.) S. C. to Fla. (Austroriparian). 



T. (T eucholahis) complexa O. S. (l^'ig- "IT, E). 



1859. Teucholahh complexa Osten Sackeii; Proc. Acad. Nat. Sci. Phil- 

 adelphia, 1859 : 223. 



Figs.— Osten Sacken, Ibid., pi. 3, fig. 10; 1859. Osten Sacken, Mon. Dipt. X. 

 Amer., 4, pi. 1, fig. 12 (wing), pi. 3, fig. 9 (hyp.); 1869. Williston, Man. X. 

 Amer. Dipt.. Ed. 3, fig. 25, sub 30 (wing) ; 1908. Alexander, Proc. Acad. Nat. Sci. 

 Philadelphia, pi. 25, fig. 15 (wing) ; 1916. Alexander, Cfls. N. Y.. 1, pi. 2,?,, fig. 52 

 (wing) : 1919. Crampton, insect. Inscit. Menst., 13, pi. 3, fig. 14 (thorax) ; 1925. 



General coloration obscure yellow, the praescutum with three black 

 to brownish black stripes; scutal lobes chiefly blackened. Pleura 

 chiefly black, with obscure yellow areas on ventral portion. $ . L. 6-7 



mm. ; w. 6.5-8 mm. 



(July, Aug.) Ct., N. J., westw. to Alich., 111. and Okla., southw. to Ga., Fla. and 

 Ala. (Austral). 



Osten Sacken's type record from northern New York is almost certainly in 

 error. 



Connecticut.— East River, July 9, 1910 (Ely). 



T. {T eucholahis) immaculata Alex. 



1922. Teucholabis complexa immaculata Alexander; Occas. Papers 

 Mus. Zool., Univ. Michigan, 127 : 5-6. 



Quite as in the typical form but with the mesonotum .shiny red- 

 dish, unmarked. 



P'or a discussion of complexa and imimaculata^ see Alexander. 

 Amer. Mid. Nat., 24:636-638; 1940. 



(June) Ind., Tenn. (Carolinian). 



T. {Teucholabis) lucida Alex. 



1916. Teucholabis {Teucholabis) lucida Alexander; Can. Ent., 48:43. 



Figs. — Alexander, Proc. Acad. Nat. Sci. Philadelphia, pi. 25, fig. 16 (wing) ; 

 1916. Alexander, Cfls. N. Y., 1, pi. 2,2,, fig. 53 (wing) ; 1919. 



