ART. 10 TROPICAL AMERICAN DIPTERA VAN DUZEE 17 



Described from two males, taken by Nathan Banks, June 20 and 

 21, 1924, at Barro Colorado Island, Panama Canal Zone. 



Tyye. — In the Museum of Comparative Zoology. 



This is very much like digitatus Van Duzee; it differs from that 

 form in having the hypopygial lamellae broad and rounded, while 

 in digitatus they are short and linear. 



Genus DIAPHORUS Meigen 



Diaphorus Meigen, Syst. Beschr., vol. 4, 1824, p. 32. — Loew, Mon. North 

 Amer. Diptera, p. 2, 1864, pp. 159, 169 {Diaphorus and Lyroneurus). — 

 Aldrich, Kausas Uniy Sci. Bull., vol. 1, 1902, p. 85, table of North 

 American species. — Van Duzee, Bull. Buffalo Soc. Nat. Sci., vol. 11, 1915, 

 pp. 161-194, table of species. 



DIAPHORUS OPACUS Loew 



Diaphorus opactts Loew, Mon. North Amer. Diptera, pt. 2, p. 160, 1864. 



J. M. Aldrich took this May 16, 1926, at La Providencia, Obispo, 

 Guatemala. 



DIAPHORUS COERULESCENS Loew 



Diaphorus coerulescens Loew, Mon. North Amer. Diptera, pt. 2, p. 170, 1864. 



J. M. Aldrich took two May 1, 1926, at El Salto, Antigua, 

 Guatemala. 



DIAPHORUS SPECTABILIS Loew 



Diaphorus spectabilis Loew, Mon. North Amer. Diptera, pt. 2, p. 162, 1864. 



J. M. Aldrich took a number of these Apriji 1-4 and 16, 1926, at 

 La Providencia, Obispo, Guatemala. 



DIAPHORUS SIMPLEX Aldrich 



Diaphorus simplex Aldrich, Trans. Entom. Soc. London, 1896, p. 333. 



J. M. Aldrich took two May 7, 1926, at Quirigua, Guatemala; 

 Xathan Banks took one pair July 3 and 29, 1924, at Barro Colorado 

 Island, Panama Canal Zone. 



DIAPHORUS CURVISPINA, new species 



Male. — Length 3.5 mm. Face wide, green with silvery white 

 pollen. Front shining green, about as wide as the face. Palpi 

 black with white pollen. Antennae black, third joint flattened at 

 tip, about three times as wide as long; arista apical. 



Thorax and abdomen green, a little dulled with grayish white 

 pollen; hairs of the abdomen black. Hypopygium and its ap- 

 pendages small, bristles at tip of abdomen stout but not very long. 

 2613—28 2 



