ART. 11. FLIES OF THE FAMILY CLUSIIDAE MELANDER AND ARGO. 11 



13. CLUSIA CZERNYI Johnson. 



(Fig. 3.) 



Clusia czemyi Johnson, Psyche, vol. 20, p. 100 (1913). — Malloch, Proc. Ent. 

 Soc. Wash., vol. 20, p. 4 (1918). 



Mostly yellow, face of male black, of female with curving suban- 

 tennal stripes, antennae, palpi and lower orbits pale yellow, arista 

 very finely pubescent; an entire horizontal black vitta beneath noto- 

 pleural suture; bristles of head and thorax strong and black; abdo- 

 men black and centrally yellowish, or yellow and laterally blackish, 

 hypopygium globular and black, valves small and luteous, ovipositor 

 yellow; legs yellowish, flexor bristles of front and middle femora of 

 male moderate, those of posterior row longer than those of anterior; 

 basal half of wings subhyaline, apical half marked with a blackish 

 cloud paler in middle part of first and most of second posterior 

 cells, sections of fourth vein nearly 1:1:2, of fifth vein 3.5:1. 

 Length 5 mm. 



Distribution. — Types from Maine, in collection of Boston Society 

 of Natural History. Recorded from New Hampshire, Vermont, 

 Massachusetts, New York, and Pennsylvania. Specimens, all taken 

 during May or June, are before us from Waubamic, Ont.; Ithaca, 

 Labrador Lake and McLean, N. Y.; Plummer Island, Md.; Dead 

 Run, Va. 



14. CLUSIA FLAVA Meigea. 



Heteromyza Jlava Meigen, Syst. Bes., vol. 6, p. 46 (1830). — Walker, Ins. Brit. 



Dipt., vol. 2, p. 163 (1853). 

 Heteroneura spurca Haliday, Ent. Mag., vol. 1, p. 171 (1838). — Loew, Wien. 



ent. Monatsch., vol. 1, p. 51 (1857). 

 Stomphastica Jlava Loew, Zts. Entom. Bresl., p. 11 (1859); Berl. ent. Zte., vol. 



7, p. 337 (1864). 

 Macrochira Jlava Zetterstedt, Ins. Lapp., p. 784 (1838); Dipt. Sc, vol. 7, p. 



2683, (1848). 

 Peratochaetus lutescens Rondani, Bull. Soc. ent. Ital., vol. 6, p. 250 (1874). 

 • Clusia Jlava Haliday, Ent. Mag., vol. 1, p. 171 (1838); Ann. Nat. Hist., vol. 2, 



p. 188 (1839).— BoiE, Stett. ent. Zts., vol. 8, p. 331 (1847).— Schiner, Faun. 



Austr., vol. 2, p. 36 (1864).— Brauer, Zweifl. Mus. Wien., p. 92 (1883).— Mik, 



Wien. ent. Ztg., vol. 5, p. 101 (1886).— Czerny, Wien. ent. Ztg., vol. 22, p. 88 



(1903). 



Yellow, face, cheeks and mouthparts whitish, palpi of female 

 apically dark, upper edge of third antennal joint blackish, arista 

 evidently pubescent. Thorax testaceous, sometimes with brownish 

 dorsocentral stripes, pleurae sometimes brown above. Abdomen 

 usually' yellow, sometimes a pair of spots on middle of segments two 

 to five. Legs yellow, the somewhat broadened front tarsi of the 

 female black. Wings light brownish, darker along costa, especially 

 about end of second vein and apex, posterior crossvein clouded, 

 sections of fourth vein 1 : 2.5, third and fourth veins parallel, be- 



