THK CANADIAN ENTOMOLOGIST «)5 



Abdomen bronze green and clothed wiih a yellowish pile which is reclinate 

 on the last four segments and thicker on the dorsum near the posterior margins 

 of the segments. The abdomen is swollen in appearance and much larger than 

 the thorax (broken at the l)ase in this specimen). Venter much the same 

 colour as the dorsum. Genitalia yellowish brown. 



Legs honey yellow, the claws black. Wing membrane infuscated, darker 

 toward the base. Veins blackish. Venation near the North American 0. 

 diligens O. S. Besides the characteristic outer cross-vein in the cell above the 

 discal, there is a supernumerary cress-vein in one wing of this specimen just 

 inside this \em. Length 8.5 mm. 



Habitat. — One specimen collected at Harima, Japan, on May 19, 1916. 

 The type is in the Cornell University collection. 



A NEW SPECIES OF HYLEMYLA FROM CANADA 

 (DIPTERA, ANTHOMYIID^). 



BY J. R. MALLOCH, F.E.S., URBANA, ILL. 



The species described in this paper belongs to the genus Hylemyia, sub- 

 genus Pogonomyza S. and D. There are three other North American species 

 of the subgenus known to the writer, all of which occur in the northeastern 

 United States. The type specimen of the species described in this paper is in 

 the Canadian National Collection of Insects, at Ottawa. 



Hylemyia (Pogonomyza) spinosissima, sp. n. 



Male. — Black, distinctly shining, entire body Avith rather dense, brownish 

 gray pruinescence. Orbits, face, and cheeks with white, almost silvery, pruine- 

 scence; second antennal joint reddish yellow at apex. Thorax indistinctly 

 vittate. Abdomen with a poorly defined dorso-central black vitta. Wing 

 yellowish, veins pale. Calyptra and halteres yellow. 



Head small; eyes separated by a little more than width of anterior ocellus; 

 orbits sparsely bristled on almost their entire length; arista with dense, very 

 short hairs; parafacial much narrower than third antennal joint; cheek not 

 twice as high as width of parafacial ; proboscis as thick as fore femur. Presutural 

 acrcstichals weak, 2-rowed; prealar bristle about one-third as long as the bristle 

 behind it; sternopleurals 1:2 or 1:3; scutellum bare below. Abdomen narrow, 

 parallel-sided, all dorsal segments with long, strong bristles on posterior margins 

 and in a transverse series on disc; hypopygium of moderate size; fifth sternite 

 with \ery short hairs. Fore tibia with from 2 to 4 bristles on antero-dorsal 

 and on posterior surfaces; mid femur net much swollen, with a series of short 

 bristles on entire antero-ventral surface, and 4 exclusi\'ely long, strong bristles 

 on postero-ventral surface, the one furthest from base directed slightly apicad, 

 situated at middle; mid tibia with 1 antero-dorsal, and 4 irregularly placed 

 posterior bristles; hind femur with a series of bristles on antero-ventral surfeice, 

 and another, weaker, series on basal half of postero-ventral surface; hind tibia 

 with 4 or 5 strong antero-dorsal and 3 strong postero-dorsal bristles, the antero- 

 ventral and posterior surfaces each with some setulose hairs. Costal thorn 

 small; last sections of veins 3 and 4 subparallel. 



April, 1919 



