150 U.S. NATIONAL MUSEUM BULLETIN 261 



The genus Abana occurs in Central America, Colombia, Ecuador, 

 Peru and Bolivia. The species are closely related morphologically, the 

 male genitalia being very similar in the species of which males were 

 available for study. Several species are known from only one sex. 

 Colors apparently vary somewhat with the time elapsed after the last 

 moult. Series are very short in most collections, and until better series 

 are available it seems inadvisable to try to construct a key to species. 

 In the species of which males have been studied, all have been teneral 

 except in those with black forewings. The genus is related to Deselvana 

 and Omagua, from both of which it can be distinguished by the con- 

 tour of the clypellus, of which the lower part is at an angle to the profile 

 of the clypeus. 



The female lectotype of Abana drusilla Distant is merely a teneral 

 form of A. dives (Walker). The male genitalia of the holotype of the 

 latter are as in the illustration oi Abana hor vat hi J acohi (fig. 139). This 

 is true also of the male genitalia of the lectotype of A. haupti Melichar, 

 and the lectotype of A. pomposida Jacobi. The female lectotype of A. 

 subfasciata var. albidipennis Melichar is a teneral specimen conspecific 

 with the female lectotype of A. subfasciata Melichar, both of which 

 appear to be synonymous with A. horvathi, as does the female lectotype 

 of A. puella Schmidt. The male genitalia of a male topotype of A. tissa 

 Distant were like those illustrated for A. horvathi. 



SPECIES OF ABANA 



[*Type not seen.] 



arnetti, new species. Panama. 



dives (Walker), 1851b:791 (Aulacizes). Ecuador. 



^r«jz7/a Distant, 1908b:73. New synonymy. 

 gigas (Fowler), 1898a:212 {Amblydisca). Costa Rica, Ecuador. 

 haupti Melichar, 1926a:324. Peru. 

 horvathi ]diCoh\, 1905c: 166. Colombia, Peru, Bolivia. 



pomposula (Jacobi), 1905c: 167 {Amblydisca). New synonymy. 

 *regia Melichar, 1926a: 324. New synonymy. 



sonora Melichar, 1926a:324. New synonymy. 



subfasciata M.c\\chdit, 1926a:325. New synonymy, 



subfasciata var. albidipennis Melichar, 1926a:325. 



/)?^f//a Schmidt, 1928a:51. New synonymy. 

 tissa Distant, 1908b: 73. Ecuador. 



Abana arnetti, new species 



Figure 137 



Length 17.5 mm. Head with median length exceeding interocular 

 width, without a distinct M -shaped elevation bordering posterior 



