52 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 125 
Genus Oxyethira Eaton 
Oxyethira Eaton, 1873, p. 143. [Type-species: Hydroptila costalis Curtis, 1834, 
by original designation.] 
Oxyethira is a genus of worldwide distribution, containing numerous 
species in most regions. Each of the Antillean islands support several 
species. 
The immature stages and the cases they make are very similar 
throughout the genus. Nielsen (1948) has given an excellent account 
of the morphology and biology of the immature stages of the type- 
species. 
Key to Species 
ADULTS 
1. With aedeagus, etc.: males. ...... 2 
Without aedeagus: females. ...... 5 
2. Ninth sternum elongate, scooplike, apex pide 3 
Ninth sternum not elongated. ....... vane 4 
3. Ninth sternum deeply and widely divided apical 5 Ges £0); azteen 
Ninth sternum with a short, narrow apical division. . . . . .O. janella 
4. Eighth segment dorsally with a sabre-like process, with a broad lateral flap. 
O. cirrifera 
Eighth segment with a pair of short, flattened dorsal lobes, and erect dorso- 
laterallobe. ... . os a a 2 Os tega 
5. Bursa copulatrix with pated: fone? proaliees antcr ior ad posterior supports. 
O. janella 
Bursa without rodlike supports 21. . 6 % 4.5. 0s ou ee Sa ge? ene 6 
6. Eighth sternum with sclerotized apicolateral invaginations . . O. cirrifera 
Highth sternum without invaginations. . .. . aes Pets 
7. Bursa rounded basally, shield shaped, with partie apical lobes . .O. tega 
Bursa angulate basolaterally and mesally, apical lobes not earlike. 
O. azteca 
Oxyethira janella Denning 
Fiauress 136-137, 148 
Oxyethira janella Denning, 1948, p. 397.—F lint, 1968a, p. 42. 
Oxyethira neglecta Flint, 1964b, p. 57; 1968a, p. 42. 
This species appears to be the most widespread Antillean caddisfly. 
It has been found on Jamaica, Puerto Rico, Dominica, St. Lucia, 
Ficures 136-149.—Oxyethira janella Denning, male genitalia: 136, lateral; 137, dorsal. 
O. azteca Mosely, male genitalia: 138, lateral; 139, dorsal. O. cirrifera Flint, male geni- 
talia: 140, lateral; 141, ventral. O. tega Flint, male genitalia: 142, lateral; 143, ventral. 
O. cirrifera Flint: 144, aedeagus, lateral. O. tega Flint: 145, aedeagus, dorsal; 146, 
female genitalia, ventral. O. cirrifera Flint: 147, female genitalia, ventral. O. janella 
Denning: 148, female genitalia, ventral. O. azteca Mosely: 149, female genitalia, ventral. 
