1920] Melander: Nearctic Tetanoceridce 311 



Wings with marginal cell, apex and crossveins distinctly marked with 

 dark brown; first posterior cell two-thirds as wide as the submarginal 

 along the costa; no distinct posterior setae on middle tibiae. Idaho,* 

 Alaska* maculipennis, n. sp. 



Wings not pictured; middle tibias with distinct posterior setae 2 



2. Third vein recurved, ending beyond wing-tip, the submarginal cell twice 

 as wide as the first posterior along the costa; pilosity of arista very 

 fine and rather sparse. N. Y.,* B. C. (Cresson, 34) dayi Cresson 



Third vein less recurved, the first posterior cell two-thirds as wide as 

 the submarginal along the costa; arista blackish and distinctly pilose; 

 hypopygium large. Vt.* ferruginea, n. sp. 



Dryomyza maculipennis new species. 



Length 5-7 mm. Entirely shining luteous, the tarsi black, front 

 opaque orange, pubescence fine, of front and notum blackish, of sterno- 

 pleurse and abdomen long and yellow, of tarsi blackish. Arista loosel}^ 

 hairy, black except at base. Three hair-like black sternopleurals. 

 Middle tibiae with at most one posterior seta. Veins yellow, but black 

 around the infuscations which include the costal cell, the apex of the 

 wing and the anterior, posterior and anal crossveins. anal crossvein 

 reflexed, third vein gently curving back, ending just behind the wing- 

 tip, parallel with the fourth vein, costal sections beyond the humeral 

 crossvein proportioned 3 : 4 : 5 : 3 : 2. 



Nineteen specimens; Avon, Moscow, Waha, Idaho;* Doug- 

 las, Alaska* (Jenne). 



Dryomyza ferruginea new species. 



Male — Length, 5 mm. Ferruginous, shining, middle of abdomen 

 brown, front opaque reddish yellow, pubescence fine, abundant, colored 

 as in the other species. Two fronto-orbitals ; antennas reddish. Two 

 long black sternopleural hairs. Hypopygium large, the paramera 

 hook-like, the penis thick, black, and when exserted curved around the 

 right side of the hypopygium. Middle tibige with two or three small 

 posterior setce, less distinct in the female. Halteres testaceous. Wings 

 with a yellowish tinge, veins yellowish brown, a slight indication of 

 clouding at the apex and about the anterior and posterior crossveins, 

 third vein gently curved, parallel with the fourth and ending at the 

 wing-tip, costal sections proportioned 5 : 5 : 6 : 4 : 3, anterior crossvein 

 nearly transverse. 



Two specimens. Lyndon, Vermont,* August 22, 1900. 

 Neuroctena Rondani. 



First vein entirely hairy; yellow species 2 



First vein bare toward base; wings uniformly infumated; arista uniformly 

 pubescent; reddish species with blackened abdomen. Col., N. Mex., 



Mont.,* Id.,* Wash..* B. C fumida Coquillett 



2. Crossveins and apices of third and fourth veins clouded; arista nearly 

 bare; a small black spot beneath calypteres. Eur.;* Mass.,* N. H.', 

 Ct., Vt.,* N. Y.,* N. J., Queb.,* Ont..* Mich., Wis., S. D. (Aldrich), 

 Wash.,* Or. (Cole), B. C.,* Alaska.* (Dryomyza pallida Day). 



anilis Fallen 

 Veins not clouded except faintly about posterior crossvein; arista closely 

 plumose; pteropleural spot weak. Mid. States; Pa. (Hough); N. Y., 

 N. J., Ont.* {Dryomyza) simplex Loew 



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