104 U.S. NATIONAL MUSEUM BULLETIN 244 



intermediate or unique characters expressed by 0. zihuatanejensis. 

 Tiie tarsal segments of this species are very similar to those of true 

 Oiketicus. Most of the other leg characters, the genitalia, and es- 

 pecially the larval case are related distinctly to those of 0. geyeri. 

 The general structure of the foreleg, the wing venation (the condition 

 of the base of media of the secondaries in particular), and the overall 

 habitus of 0. zihuatanejensis suggest a possible third group within 

 the genus. The close biological affinity of the larva, however, at 

 least as evidenced by the similarity of case construction, obscures the 

 uniqueness of such an additional group. Consequently, only two 

 subgenera presently are recognized. 



42. Oiketicus bergii (Weyenbergh), new combination 



Figures 41, 92, 93, 146, 228, 229, 284, 284a, 308, 348, 384; Map 9 



Psyche bergii Weyenbergh, Tijdschr. Ent., vol. 27, p. 17, figs. 9-11, 1884.— Hey- 

 laerts, Ann. Soc. Ent. Belg., Compt.-Rend., vol. 28, p. c, 1884. — Kirby, Cat. 

 Lep. Heter., vol. l,p. 516, 1892. — Dalla Torre and Strand, Lep. Cat., pars 

 34, p. 114, 1929.— Koehler, Rev. Soc. Ent. Argent., vol. 3, no. 17, p. 350, 

 1931.— Gaede in Sietz, Macrolep. World, vol. 0, p. 1179, 1936. 



Oiketicus oviformis Koehler, Physis, vol. 17, p. 462, 1939 (new synonymy). 



Clania oviformis (Koeliler), Rev. Soc. Ent. Argent., vol. 16, no. 1, p. 23 fig. 6, 1953. 



Male. — (Fig. 41.) Antennae (fig. 384) with 32-35 segments, 

 pectinations gradually decreasing in length to antennal apex; length of 

 longest pectination (at 8th segment) 0.9-1.0 mm. Body vesture 

 light fuscous. First tarsal segment of pro- and mesothoracic legs 

 2x length second segment. Middle and hindtibiae each with two 

 apical spurs. Abdomen equalling or slightly surpassing hindmargin 

 of secondaries. 



Wings (fig, 146) evenly scaled; light fuscous in color. Apex of 

 forewing not as extended, outer margin not as oblique as 0. geyeri; 

 discal scales (fig. 348) slender, apices bluntly rounded to distinctly 

 bidentate; venation as in 0. geyeri. Secondaries with outer margin 

 evenly rounded. Wing expanse 21-23 mm. 



Male genitalia. — (Fig. 284.) Very similar to 0. geyeri except 

 relatively smaller. 



Female. — As described for genus. Length 17 mm. 



Female genitalia. — (Fig. 308.) Vestibulum elongate, similar 

 in shape, size to spermatheca, accessory glands arising midway along 

 length. 



Case. — (Figs. 92, 93.) Length 21-30 mm.; greatest diameter 

 6-7 mm. Exterior of case sometimes naked, usually with sparse scat- 

 tering of tiny plant fragments concentrated at either end of bag; 

 elliptical shape, greatest diameter at area ji to % distance from 



