1984] 
Aiello — Genus Adelpha 
31 
the horns are small points bent to the sides. The hook on A2 is 
enlarged slightly at the tip much as in melanthe. 
melanthe, Panama (Aiello) 
The larva is grey (darker above) excepting the dorsal thorax 
through A2, which is dirty yellow, and the sides of that same 
area, which are dark brown. The scoli are grey with black spine 
bases and apices. The larva has a frosted appearance partly due 
to its patterned scoli, but mostly because the entire body is 
densely clothed with short thick grey setae. It is the only Adelpha 
species so far that has rounded pupal head horns. The hook on 
A2 is slightly expanded at the tip. 
Adults of melanthe look like large salmoneus but the 
undersurface is quite different. 
mesentina, Brasil (Moss, 1933) 
From Moss’s illustrations, mesentina and delphicola larvae are 
similar, and no doubt these two species are close relatives. As a 
result of their close resemblance, Moss did not realize that he had 
two species until the adults emerged. If his illustrations are 
accurate, then mesentina has a less rounded pupal hook than 
delphicola, but the head horns are nearly the same. 
phylaca aethalia, Panama (Aiello, Coley) 
The larva is greenish or pinkish grey, and speckled with darker 
grey (especially on the dorsum); the sides of the thorax through 
A2 are dark brown, and some individuals have a dark brown oval 
on each side of A5, just below the scolus. Pupal head horns are 
short triangles bent to the sides. 
Adults are very close look-alikes of cocala. 
Group III 
major characteristics: 
(1) Larval scoli A2-6 all similar and short; 
(2) Pupa tilted so that ventral side is superior (at least in 
justina ); 
(3) Pupal head horns small triangles bent to sides (also occurs 
in GROUP II); 
(4) Valves of male genitalia unarmed (also true of GROUP 
IV); 
