;378 CONNECTICUT GEOL. AND NAT. HIST. SURVEY [Bull. 



General coloration above gray to brownish gray, clearer gray 

 laterally and on pleura; in most specimens with a capillar^' dark 

 brown praescutal vitta. S . L. 7-7.5 nnn. ; w. 7.5-9 mm. 9 . L. 

 7.5-8 mm.; w. 8-8.5 mm. 



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

 southw. to Fla., Ala., Miss, and La. The most common member of the genus, 

 especially characteristic of helophytic associations. 



Connecticut.— East River, Sept. 1910 (Elv) ; Granby, June 8. 1929. Sept. 4, 1928 

 (C. P. A., G. C. C.) : Manitic Lake, May 16, 1931, Aug. 6, 1929 (C. P. A.) ; Xatchaug 

 State Forest, June 14, 1933 (C.P.A.); Storrs (C. S.C.). 



P. noveboracensis (Alex.) (Fig. 43, 1). 



1911. LjmnopMJa novehorac&nsis Alexander; Psyche, 18:196-198. 



Figs. — Alexander, Ibid., pi. 16, fig. 3 (ven.). Needham, 23rd Rept. X. Y. St. 

 Ent. for 1907, pi. 18, fig. 6 (ven.); 1908 (as quadrata). Alexander, Cfls. N. Y., 1, 

 pi. 40, fig. 150 (ven.) ; 1919. Dickinson, Cfls. Wise, p. 202, fig. 95 (wing) ; 1932. 



General coloration yellowish brown, the notum without distinct 

 markings; pseudosutural foveae pale, inconspicuous; thoracic pleura 

 yellowish. Wings with a pale yellowish tinge, the stigmal area a 

 little darker; fti-cu somewhat variable in position, often close to fork 

 of M. S. L. 5.2-6 mm.; w. 6-6.5 mm. 2. L. about 7-8 mm.; w. 

 7-7.8 mm. 



(June-Aug.) Ont., Que., Me., N. H., Vt., Mass., N. Y., westw. to Wise, N. D. and 

 Alta., southw. to N. C. and S. C. Especially characteristic of shaded humid wood- 

 lands near flowing water ; occasionally in bogs. 



Connecticut.— East River, July 4-Aug. 11, 1910 (Ely). 



5. Subtribe Limnophilakia 

 Limnophila Macquart 



1834. LiiiiHophUa Macquart; Suit, a Button, 1, His^t. Xat. Ins. Dipt.: 



95. 



Key to Subgenera 



1. Apical cells of wing with scanty macrotrichia (Fig. 43, J, K) Lasiomastix 



No macrotrichia in apical cells of wing 2 



2. Supernumerary crossveins in either cell Rz or cell M of wing 3 



No supernumerary crossveins in any cells of wing 5 



3. A supernumerary crossvein in cell Rs (Fig. 43, L) Dicranophragma 



A supernumerary crossvein in cell M (Fig. 43, Al, N) 4 



4. Wings with an interrupted cross-banded pattern ; Rs long-spurred at origin : 



antennae of malq elongate (Fig. 43, Al) Idioptera 



Wings with a spotted pattern, or else immaculate; Rs slightly if at all spurred 

 at origin; antennae short in both sexes (Fig. 43, N) Elaeophila 



5. Cell i?3 sessile; cell Mi lacking (Fig. 43, O) Idiolimnophila 



Cell R3 petiolate ; cell Mx present 6 



6. Very large species (wing over 16 mm.) ; wings with the branches of .1/ 



leaving the main stem at a strong angle, cell 1st M2 thus being strongly 



hcxagonal (Fig. 43, P) Eutonia 



Smaller species (wing under 14 mm.) ; wings with the branches of M not 

 strongly divergent, especially Ms+i, cell 1st M2 being more nearly rectangular 

 in outline (Fig. 44, A) 7 



7. Wings with i?2+3+4 short, subequal to the basal deflection of R5; Rs elongate, 



exceeding four times R2+s+i (Fig. 44, A) ; coloration polished black (viun- 



