NO. 3535 MICROLEPIDOPTERA, IX — OBRAZTSOV 605 



Remarks. — A rather variable species, most similar to chrysanthema 

 Meyrick, igniflora Meyrick, and the new species tremewani and 

 hradleyi in the markings of the forewing. To judge from the ex- 

 amined materials, the most constant external character of splendens 

 consists of two costal streaks in the outer half of the forewing (the 

 thii-d and the fourth streaks, counting from the wing apex). These 

 streaks are always joined together with their tips, forming a figure 

 similar to the inverted Greek letters tt or 7; in a few cases this union 

 is incomplete, but even then the tips of the above streaks are closely 

 approximate to each other. This featiu-e appears to be helpful for 

 separation of splendens from most of the above-mentioned species, 

 but it is insufficient for a separation of splendens and chrysanthema 

 because of a similar arrangement of costal streaks in these two species. 

 Nevertheless an experienced eye can find some distinction in the 

 shape and arrangement of the terminal and tornal markings of the 

 forewing, also in the markings of the hindwing of splendens and 

 chrysanthema, but in dubious cases only the examination of the gen- 

 italia can be reliable. 



The variation of the species shows itself in the additional develop- 

 ment of some elements of the wing pattern, as well as in their re- 

 duction and/or division into smaller portions. Most striking are the 

 two females from Brazil (pi. 41, figs. 5 and 6) which give the impres- 

 sion of being some separate species. A genitalic examination has 

 proven their identity with splendens. 



Pseudatteria (Pseudatteria) volcanica (Butler) 



Figure 11; Plates 22-27, 41 



A comparative study and the genitalic examination of the five 

 forms {volcanica Butler, mimica Felder, rivularis Butler, potamites 

 Walsingham, and geminipuncta Walsingham), described as separate 

 species, give good reasons to consider them as being conspecific. 

 On the basis of the superficial characters it becomes possible never- 

 theless to treat the specimens from South America and those from 

 Central America as two separate subspecies, rather distinctly differ- 

 entiated from each other. In some individuals this difference is seen 

 perhaps less clearly than in others, but in general the separation of 

 the two subspecies is not difficult. 



Male genitalia. — Uncus elongate-scaphiform, gradually dilated 

 from a short stalk toward a rotundate tip ending with a little, acute 

 point directed ventrad and accompanied by a small, setose papilla 

 located basad of it. Valva elongate-ovate with external margin 

 rounded; costa narrow, sclerotized; sacculus slightly thickened at 

 base, and narrowly extended at least to middle of ventral edge of 

 valva. Aedeagus moderately long and thick, with a narrow, slightly 



