FLIES OF THE GENUS ODINIA — SABROSKY 227 



brown stripe, which forks opposite the third dorsocentral and continues 

 caudad as two broad brown spots; mesopleuron with brown stripe 

 above, and narrow broad margin adjacent to sternopleuron, the latter 

 dark brown above; mesonotal bristles and hairs black, the sterno- 

 pleural bristles pale distaUy, and propleural bristle yellowish. Ab- 

 domen gray, the numerous hairs and marginal bristles set on small 

 brown spots; second tergum with broad brown band along hind 

 margin, the third to fifth terga each with four brown spots, on the 

 third tergum each submedian spot usually narrowly connected with 

 the adjoining lateral spot. Legs predominantly yellow, more or less 

 mottled with brown: Fore coxa yellowish, browned toward base; 

 femora brown to blackish with some yellow areas, occasionally almost 

 black except at knees, especially on outer surfaces of fore and hind 

 femora; tibiae with subbasal and distal black bands, which vary 

 somewhat in width and in depth of color ; tarsi yellow, slightly browned 

 toward apex. Wing hyaline, brown or black-brown spotted (fig. 1), 

 with the usual spots on the veins and crossveins plus two spots in the 

 marginal cell, and spots about the apices of second and third veins. 

 Halteres whitish yellow. 



Front relatively narrow, the breadth at vertex slightly greater 

 than the length, 1.27 times the width of an eye and 0.40 times the 

 width of the head, the anterior margin slightly concave, revealing the 

 lunule ; frontalia and anterior orbits with a few minute hairs, but none 

 between the posterior orbital and the vertical bristles; vibrissa and 

 oral bristles slender, not broadly flattened. 



Middle tibia ventrally with only a single strong bristle, which is 

 over half the length of the mid basitarsus ; hind femur with one strong, 

 partly or entireh'" yellow, preapical an tero ventral bristle. 



Length of body and of wing, 2.75-3 mm. 



Holotype female (USNM 64272), Peter Rest, St. Croix, Virgin 

 Islands, Oct. 13, 1956, R. Delgado. Paratypes, all females (USNM): 

 3, St. Croix, Virgin Islands, July 18, Sept. 15 (at Christiansted) and 

 Sept. 29, 1956, Delgado; 1, St. Thom.as, Virgin Islands, July 28, 1957, 

 Delgado; 1, Isla Verde, Santurce, Puerto Rico, Oct. 9, 1956, A. L. 

 Brown; 2, San Juan, Puerto Rico, May 17 and Aug. 8, 1953, B. B. 

 Sugarman. All specimens were collected in fruit fly traps. I have 

 also seen one female in poor condition, Miami, Fla., Jan. 24, 1957, 

 H. N. McCoy, "in medfly trap." 



The upper part of the face in some specimens shows a tinge of 

 brown, and it is possible that normally the face is brown-banded as 

 in the other Neotropical species. AU available specimens were 

 mounted out of fluid, and are probably paler than in life. 



The wing pattern is the most distinct in the genus, and there should 

 be no difficulty in recognizing the species. The single strong ventral 



