85 



Notes on Hypocala aiidreinoiia and JJypocala velans ILep.J. 



BY OTTO H. SWEZEY. 



LSpecimeiis exhibited J. 



As reported on page 6, Vol. li of the i'roceedings of the Ha- 

 waiian Entomological Society, Mr. G. P. Wilder discovered the 

 caterpillars of Hypocala andremona on a tree in his yard. At 

 tlie tunc the tree was supposed to be a L'apota, but it could not 

 be determined with certainty as the tree had never borne fruit. 

 Recently Mr. Wilder has informed me that this tree has borne 

 fruit, and it proves to be Sapota. 



On a trip up Niu ridge by several of the members of our So- 

 ciety, May i6, 1909, caterpillars of this same species of moth 

 were discovered feeding quite numerously on Hawaiian ebony 

 trees {Maba sandimcensis). They showed the same variation in 

 coloration as those which infested Mr. Wilder's Sapota tree. 

 Among them were a few that were sligntly different and not 

 so slender as the others, these on rearing proved to be H. velans. 



May 31, on a trip into the Koolau Range above Wahiawa, I 

 again found caterpillars of H. velans feeding on an ebony tree. 

 The caterpillars of this moth were heretofore unknown ; now its 

 native food plant is made known as well as that of H. andremona. 



I now present descriptions of larva and pupa of each. 



Hypocala andremona Cramer. 



Full-grown larva Is aFout 45 mm. ; cylindrical, slightly nar- 

 rowed in front of 5th segment. 



Green form — Nearly uniform bright green with a yellowish 

 tinge, more yellovv^ish on dorsum of 5th segment. A pale yellow 

 subdorsal line and a pale yellow line just below spiracles; three 

 crinkled faint lines between these two, a similar line on each side 

 of dorsal vessel ; spiracles white, black margined, a black spot 

 above and enclosing the upper part of each, often a forward pro- 

 jection from the upper part of the spot, more particularly on the 

 spot above the posterior spiracle. Tubercles concolorous, incon- 

 spicuous ; hairs slender; 12th segment slightly enlarged dorsally- 

 Head concolorous, with two vertical black bars in front very 

 wide apart. The black spots on the spiracles are larger in dif- 

 ferent specimens, varying till in some there is a continuous stripe 

 enclosing the spiracles, pinkish on the lower part. The cater- 

 pillar turns rosy dorsally when about ready to pupate. 



An intermediate form has head mostly black, and much black- 

 ish mottling on dorsal part; cervical shield mostly black-marked; 

 the black spiracular stripe incomplete. 



Proc. Haw. Ent. Soc, II, No. 2, Sept., 1909. 



