No. (J4J DIFTERA OF COXNECTICIT: TAXONOMY 407 



brownish yellow, narrowly darkened laterally: outer se^nnents nitire 

 infuscated; liypopy<riinn i)rownish yellow. IVIale liypopy<riinn (Fi^^ 

 45, P) with the outer dististyle a heavily ehitinized' curved hook, the 

 apex simple; at about the basal third, the style l)ears a small lateral 

 branch; inner dististyle more or less hammer-shaped. 6. L. 7.0-7.8 

 mm.: w. 7-7.3 mm. 9. L. about 8 mm.: w. 7-7..") imu. 



(July, Aug.) N. J., southw. to w. Fla. 



L. {Limnophila) laricicola Alex. (Fi<r. 45, Q). 

 1912. Limnophila laneicola Alexaudei- ; Psyche, 1I> : Km . 



Figs.— Alexander, Ibid., 19, pi. 13, fig. 4 (wing) ; 1912. Alexander, Cfls. X. Y., 

 1, pi. 38, fig. 120 (wing) ; 1919. 



General coloration of mesonotum polished rusty-red. without 

 markings. Antennae ( 6 ) elongate, if bent backward extending to be- 

 yond base of abdomen; flagellar segments swollen on ventral face, 

 black, the incisures a little paler. Halteres with darkened knobs. 

 Legs obscure yellow, the outer tarsal segments darkened. Wings with 

 a strong yellow tinge, the stignui a trifle darker; Sci ending about op- 

 posite r-?n; E-^+s + i long, exceeding rn-cu\ R\j^2 and R_. subecjual: m-cu 

 at or beyond midlength of cell 1st M-^- Abdomen conspicuously hairy, 

 brownish yellow, darkened laterally; in $ with a dark brown subter- 

 minal ring; hypopygium large; obscure yellow. Male hypopygium 

 (r'ig. 45, Q) with the tergite produced into two slender lol)es that 

 are separated by a broad U-shaped notch; outer apical angle of basi- 

 style produced into a ehitinized spine; outer dististyle conspicuously 

 bifid, one arm a slender ehitinized spine; inner dististyle elongate, ex- 

 panded outwardly, shallowly bifid at apex; aedeagus elongate, i. 

 L. 5.5-G mm.; w. 5.5-6.5 mm. 9. L. 7.5-8 nnn.; w. ().5-7 mm. 



(June) Vt., Mass., N. Y., westw. to Mich., southw. to Va. and Temi. 



Connecticut.— Phoenixville, June 14. 1933 (C. P. A.): Putnam. June 15. 1933 (C.V. 

 A.); Staflford Springs, June 14, 1933 (C. P.A.). 



The general appearance, especially of the female, is (jtiite like that 

 of a small, inconspicuous species of Phylldorea^ such as novde-aiKjIjac. 

 and care must be taken in the determination. The nuile hypopygium 

 is very distinctive. 



L. {Limnophila) niveitarsis O. S. (Fig. 45. K). 

 1869. Limnophila niveitarsis Osten Sacken : Mon. Dipt. N. Aiiier.. 4: 

 209-210. 

 Fig.— Alexander, Cfls. N. Y., 1, pi. 38. fig. 118 (wing) ; 1919. 



Praescutum without evident praescutal stri))es: tuberculate pits 

 lacking. Antennae {$) very long, if bent backward extending to 

 near two-thirds the length of abdomen; scape short, black: flagellum 

 dark brown, the segments with a delicate, erect, pale pubesceiice: 

 antennae in $ shorter, extending about to base of abdomen. Head 

 light gray. Halteres yellow. Legs with femora and libiae obscure 

 brownish yellow, the tips darkened: tarsi dark brown, the posterior 

 tarsi snowV-white, especiallv the setae. Wings with a famt brownish 



