312 Annals Entomological Society of America [Vol. XIII,. 



Sciomyza Fallen. 



Sciomyza Fallen, not of authors, which becomes Melina Desv. 

 Bischofia Hendel, Abhandl. z. b. Ges. Wien, II, 52, (1902). 



Largely shining black, the head, pleurae, scutellum and abdomen laterally 

 reddish to yellow; legs black, the middle pair yellow, except femora 

 apically, the hind femora yellow toward base; arista sparsely plumose; 

 veins bordered with brown, anterior crossvein beyond end of first vein; 

 mesopleuras bare. Queb., Ottawa. {Bischofia varia Coq., Can. Ent. 

 XXXVI, 12, 1904) varia Coquillett 



Largely reddish species with reddish legs, the front pair with black tibiae 

 and tarsi, blackened femoral spot toward apex and paler knees; wings 

 hyaline or apically infumated, anterior crossvein opposite end of first 



vein; mesopleurse with posterior row of setulae 2 



2. Center of face polished and blackish; palpi apically blackish; plumosity 

 of arista dense; 1 or 2 pteropleural bristles. Ottawa, Que., Me.,* 

 N. H., N. Y., Mich. {Dryomyza) aristalis Coquillett 



Face white pruinose and yellow; a pruinose stripe above notopleural 

 suture, center of notum olivaceous, lower pleurae pruinose; palpi yellow; 

 plumosity of arista loose; usually 3 pteropleurals. Eur.; Mont.,* 

 Wash.* {Sciomyza simplex Fall., Dipt. Suec. Sciomyz. 12, (1820); 

 Meigen, Syst. Bes. VI, 10 (1830); Macquart, Suit. Buff. II. 405, (1835); 

 Zetterstedt, Dipt. Sc. V. 2090, (1846); Schiner, Faun. Austr. II, 46 

 (1864); Rondani, Prodr. Dipt Ital. VII. Sciomyz. 39 (1868); Hendel, 

 Abh. z. b. Ges. Wien, II. 53 (1902) ) simplex Fallen. 



Pteromicra Lioy. 



Pteromicra Lioy, Atti. Instit. Veneto, IX, 1011 (1864). 



Dichrochira Hendel, Abhandl. z. b. Ges. Wien, II, 57 (1902). 



Two fronto-orbitals; wings only slightly longer than abdomen and nar- 

 row, the anal vein about one-third the length of the underside of the 

 discal cell; front tarsi black. Subgenus Pteromicra Lioy. Eur.; Siberia; 

 Alaska. {Sciomyza) glabricula Fallen. 



One fronto-orbital; wings longer and usually broader, the anal vein 

 about half the length of the underside of the discal cell. Subgenus 

 Dichrochira Hendel 2 



2. Arista thickly pubescent; head entirely black except on the pruinose 



facial orbits; palpi black 3 



Arista loosely pubescent; head more or less reddish at least near frontal 

 suture 4 



3. Arista bushy, black, the antennae reddish; front tarsi entirely black; 



hypopygium large; wings broad. Yellowstone Park.*. . . melanothrix, n. sp. 

 Arista white, the third antennal joint black; last 2 or 3 joints of front 

 tarsi white; hypopygium small; wings narrow. Wash.,*, .leucothrix, n. sp. 



4. Palpi yellow; last 1 or 2 joints of front tarsi white 5- 



Palpi and third antennal joint black; apical 3 joints of front tarsi white. 



Mass. {Dichrochira albicalceata Cresson, 39) albicalceata Cresson. 



5. Head largely yellow; front femora yellow only on basal portion; humeri. 



notopleural suture, scutellum and pleurae brownish. H. B. T.; Wash.,* 



Mass., D. C. {Sciomyza) apicata Loew 



Head largely black; front femora two-thirds yellow; thorax altogether 

 black. Eur.; Pa., 111., Wise.,* Wyom.,* Mont.,* Id.,* Wash.* {Scio- 

 myza nigrimana Mg., Syst. Bes. VI, 14 (1830); Schiner, Faun. Austr. 

 II, 45 (1864); Rondani, Prodr. Dipt. Ital. VII, Sciomyz, 42 (1868); 

 Hendel, Abh. z. b. Ges. Wein, II, 58 (1902). Dichrochira plenralis 

 Cresson, 39) nigrimana Meigen 



