390 NEW EASTERN ANTHOMYIIDAE 



FANNIA R. D. 



The more or less approximate eyes of the male and the rela- 

 tively short second abdominal segment are characteristics of this 

 genus. 



Fannia parallela n. sp. 



Male. Length 4.5 to 5 mm. Head in profile hemispherical, genae and 

 buccae scarcely visible from the side; frontal triangle small; orbits silvery, 

 separated by a narrow, black, frontal line about as wide as one of the orbits; 

 eyes bare; antennae two-thirds as long as the face, fuscous, the third segment 

 grayish pruinose, arista with a pubescence just visible under twenty diameters; 

 palpi black. Thorax black, shining, only faintly pruinose when viewed from 

 the side; inner d. c. (acrostichals) in two rows, small, except the posterior 

 pair; "pra" long. Abdomen narrow, more distinctly tapering than in F. 

 canicularis, shining black, the three basal segments somewhat translucent 

 yellow at the sides, as in the species just mentioned but less conspicuously. 

 Hypopygium as figured (figs. 5, 6). Legs black, the knees more or less yellow- 

 ish; fore tibia with a short seta on the extensor surface at the apical fifth; 

 basal two-thirds of middle femur on flexor side with three rows of setae, of 

 which the setae of the anterior and the median rows gradually increase in 

 length, suddenly interrupted for a short space, then both rows continued in six 

 or seven closely set setae; middle tibia but slightly thickened on the apical 

 third, ciUate on inner side, the hairs gradually increasing in length at the apex 

 where they are about as long as the diameter of the segment; on the apical 

 fourth anteriorly are three or four setae and posteriorly there is another one; 

 hair on the inner side of the hind femur even less conspicuous than in F. cani- 

 cularis; the setae on the outer flexor surface with about ten in the row, those 

 on the outer extensor surface more numerous and more irregularly placed; 

 hind tibia usuaUy with two setae on the outer extensor side at three-fifths and 

 four-fifths of the tibial length from the base respectively, and one longer one 

 on the median extensor side at the apical third. Wing with a strong smoky 

 tinge, more yellowish at the base; costal spine scarcely differentiated; R4+6 and 

 Mi+2 parallel or slightly converging; the penultimate section of M1+2 about 

 half as long as the ultimate; the last segment of Cu, a little over half as long 

 as the m-cu crossvein. Squamae yellowish with a smoky tinge, the upper 

 covering the lower. Halteres yellowish. Ithaca, New York, August 30. 

 Four males. 



This species goes to F. difficilis in the key given by Stein.^ 



It differs chiefly in the arrangement of the setae of the middle 



femur and in lacking the dense hair on the inner surface of j:he 



hind pair. From F. canicularis it may readily be distinguished 



by the narrower front and darker thorax and abdomen. 



* Die Anthomyidengruppe Homalomyia, 1895. 



