54 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 125 
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Grenada, in Florida, and in Central America. It is closely related to — 
O. puertoricensts Flint and O. azteca Mosely. From both it differs in 
the male sex in the long narrow ninth sternum. 
Aputt.—Length of forewing 2-3 mm. Color various shades of 
brown and white. Seventh sternum with a small spine posteromesally. 
Male genitalia: eighth segment surrounding most of genital capsule, 
divided ventromesally, with dorsolateral lobe surpassing ventro- 
lateral lobe; ventral part of ninth segment narrow, scooplike much 
surpassing eighth segment, dorsal structure Y-shaped; aedeagus a 
single spinelike structure resting in fork of the Y. Female genitalia: 
eighth sternum with posterior margin bilobate; bursa copulatrix with 
anterior processes twice length of bursa. 
LarvA, PUPA, CASE.— Unknown. 
MatTeErtAL.—Dominica, Clarke Hall, 11-20 Jan. 1965, W. W. Wirth, 2 39; 
same, but 21-30 Jan. 1965, 1c’ 49 ; same, but 27 Jan. 1965, J. F. G. Clarke, 2 9 ; 
same, but 1-10 Feb. 1965, W. W. Wirth, 19; same, but 11-20 Feb. 1965, 2¢ 
13 9 ; same, but 18 Feb. 1964, D. F. Bray, 1? ; same, but 21-28 Feb. 1965, W. W. 
Wirth, 29; same, but 25 Feb. 1964, D. F. Bray, 49; same, but 1-10 March 
1965, W. W. Wirth, 69; same, but 11-20 March 1965, 39; same, but 21-30 
March 1965, 39 ; same, but 10-20 April 1964, O. 8S. Flint, Jr., 129 ; same, but 
21-29 April 1964, 7c 619 ; same, but 1-10 May 1964, 1 19; same, but 11-20 
May 1964, 3o° 199 ; same, but 1-15 June 1964, 11 9 ; same, but 15-30 June 1964, 
11¢ 1069; Layou Valley, 23-25 July 1963, O. S. Flint, Jr., 19; Springfield 
Estate, 20-26 July 1963, O. S. Flint, Jr., 59; Fond Figues, 13 March 1965, 
W. W. Wirth, 2° 329 ; same, but 6 April 1964, O. S. Flint, Jr., 1c; same, but 
7 May 1964, 1c 29; Grand Bay, 13 March 1964, D. F. Bray, 19 ; same, but 13 
April 1964, O. S. Flint, Jr., 39 ; Pont Casse, 1.6 miles west, 24 April 1964, O. S. 
Flint, Jr., 19 ; same, but 28 April 1964, 19 ; same, but 19 May 1964, 107 49; 
same, but 16 June 1964, 2o7 49? ; Pont Casse, 3.5 miles north, 5 Dec. 1964, P. J. 
Spangler, 39 ; Pont Casse, 1.3 miles east, 10 May 1964, O. S. Flint, Jr., 19; 
same, but 12 May 1964, 1? ; Pont Casse, 2.2 miles east, 1 May 1964, O. S. Flint, 
Jr., 49; same, but 19 June 1964, 109; Pont Casse, 3 miles east, 13-16 Oct. 
1966, A. B. Gurney, 1c 39; Pont Casse, .4 mile east, 6 May 1964, O. S. Flint, 
Jr., 29; Sylvania, 23 Jan. 1965, W. W. Wirth, 70 149. St. Lucia, Vergallier 
River, near Marquis, 31 July 1963, Flint and Cadet, 19; Cul de Sac River, at 
mile post 9, 27 July 1963, Flint and Cadet, 59. Grenada, 2 miles west of Grand 
Ktang, 4-8 Aug. 1963, O. S. Flint, Jr... 7799. 
Brotogy.—Although the immature stages of this species have not 
been taken, they will probably be found in most flowing water habitats. 
Adults have been attracted to lights at most elevations on many of 
the islands. 
Oxyethira azteca (Mosely) 
FIGurEs 138-139, 149 
Lozotrichia azteca Mosely, 1937, p. 165. 
Oxyethira azteca (Mosely).— Ross, 1944, p. 295. 
This species described from Mexico, where it is quite common, will 
undoubtedly be found to be widely distributed in Central and northern 
South America. It is here recorded from Grenada for the first time. 
