O. A. JOHANNSEN 391 



Type and paratypes in the Cornell University Collection. One 

 paratype in the collection of the American Entomological So- 

 ciety of Philadelphia. 



LiMNOPHORINAE 



Lispa, Hehecnema and Limnophora are genera of this subfam- 

 ily represented in the fauna of New York State. 



limnophoHa r. d. 



The more or less narrowed front of the male, the paired ab- 

 dominal spots, and weak setae of the body characterize this genus. 



Limnophora torreyae n. sp. 



Male. Length 4 to 4.5 mm. Head black, orbits brownish-black, contiguous ; 

 frontal triangle and antennae dull black, antennae black, about two-thirds 

 the length of the face, arista pubescent, black; palpi black; face black with 

 grayish reflections, concave; oral margin somewhat produced, genae blackish, 

 barely visible in profile; buccae grayish pruinose, in profile nearly as wide as 

 the length of the third antennal joint. Mesonotum subopaque brownish- 

 black with indications of a divided median, black line; scutellum subopaque 

 brownish-black; pleura and metanotum grayish pruinose; inner dorso-centrals 

 in two rows, setulae-like except a larger pair in front of the scutellum; dorso- 

 centrals 2+3; sterno-pleurals 1-fl; "pra" and the second post-sterno- 

 pleural not differentiated from the setulae; scutellum with the usual two pairs of 

 macrochaetae. Abdomen ovoid, yellowish-gray pruinose, if but four segments 

 are counted, the first wholly black except for the immediate base and the 

 median stripe; the second and third with large black triangles, the posterior 

 corners of which are more or less produced along the posterior margins of the 

 segments; fourth with a median triangle, sometimes divided, extending the 

 full length of the segment; abdominal setae slender, sparse and depressed. 

 Hypopygium as figured (figs. 10, 11). Coxae gray; legs black, claws and 

 pulvilli small. Fore tibia with a fine seta on the outer lateral extensor side near 

 the middle and another, sometimes wanting, a little more distad on the outer 

 lateral flexor side; the middle tibia with two on the posterior extensor side; 

 hind tibia with two on both outer lateral extensor and flexor surfaces, some- 

 times one or the other wanting. Wings grayish hyaline; costal spine very 

 small; Ri ends about opposite the r-m crossvein; m-cu crossvein sUghtly 

 flexed, nearly perpendicular to M1+2, the penultimate section of M1+2 half as 

 long as the ultimate section; m-cu crossvein about one-fourth longer than the 

 last section of Cui. Squamae yellowish-white, margin more yellow, lower 

 scale projecting one-half its width beyond the upper. Halteres yellow. 



Female. P>ont a little broader than one eyo, dark brown; frontal triangle 

 a velvety seal brown, deeply notched almost to the base of the antennae; 

 ocellar spot of the same texture as the frontal stripe; face, genae and buccae 

 whitish-gray pollinose; genae in profile as wide as the width, buccae nearly as 



TRANS. AM. KNT. SOC, XLII. 



