118 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 93 



Genus NEOTHERINA Dognin 



Neotherina Dognin, Ann. Soc. Ent. Belgium, vol. 57, p. 402, 1913. (Genotype: 

 Neotherina inconspicua Dognin.) 



In addition to characters noted for the group: Apex of male an- 

 tenna simple. Fore wing with two transverse lines, evenly curved; 

 hind wing with one transverse line. Male genitalia with gnathos 

 armed with long slender spines; aedeagus with a sclerotized bifurcate 

 plate clistoventrally. Female genitalia with a strongly sclerotized, 

 narrow concave band bordering ventral margin of genital opening* 

 signum a strongly sclerotized plate, central area with spinules, margin 

 spinose or serrate. 



Remarks. — Neotherina Dognin does not appear in the nomenclators 

 of either Schulze or Neave. The name was used, apparently for the 

 first time in the literature, for a new species, inconspicua, described 

 by Dognin in 1913 without any generic diagnosis. Dognin stated that 

 inconspicua resembled Neotherina axion (Druce) but with the lines 

 different, thus assigning Therina axion Druce to the genus. An ex- 

 amination of the type will be necessary to determine the true posi- 

 tion of axion, but from the figures 2 representing it I suspect that it is 

 more closely related to Lanibdina calidaria (Dyar) and possibly synon- 

 ymous with it. 



The Dognin species, inconspicua, also resembles Therina axona 

 Druce, but differences in genitalic structure place them in separate 

 genera ; the latter is referable to Destutia Grossbeck. 



Superficially, the species of Neotherina resemble those of Lanib- 

 dina; the males, however, are easily separable by the simple apex of 

 the antenna and furcate plate of the aedeagus and the females by the 

 concave sclerotized band near ventral margin of genital opening. 

 Some species of Besma have similar genitalia but are easily separated 

 by the three transverse lines on fore wing. 



KEY TO SPECIES OF NEOTHERINA 



1. Hind wing with a medial transverse line passing 



through outer angle of discal cell 1. inconspicua Dognin 



Hind wing with a postmedial transverse line, well 



beyond outer angle of discal cell 2. $ imperilla (Dognin) 



3. 9 consequens (Prout) 



1. NEOTHERINA INCONSPICUA Dognin 



Plate 2, Figures 5-5C ; Plate 9, Figup.es 27-27A 

 Neotherina inconspicua Dognin, Ann. Soc. Ent. Belgium, vol. 57, p. 402, 1913. 



Male. — Head and collar yellow; palpus yellowish, second and third 

 joints irrorated with fuscous scales. Thorax and wings ocherous with 



2 Druce, in Biologia Ccntrali-Amerieana, Insecta, Lepidoptera-Heterocera, vol. 3, tab. 45, 

 figs. 25, 26, 1881-1000. 



