105 



The full-grown larva is about 15 mm., pale sliiny green; 

 head pale yellowisti mottled with light brown, eyes and posterior 

 margin blackish ; cervical shield concolorons ; skin minutely 

 papillose except on tubercles ; tubercles broadly rounded or oval, 

 "ii" farther apart than *'i", "iii" above spiracle, "iv+v" below 

 spiracle ; hairs black, pale tipped ; spiracles round, black. A 

 larva but 9 mm. long had head and cervical shield black. 



Pupa, 7.5 nnn., pale yellowish, eyes, spiracles and apical seg- 

 ment of abdomen brownish ; wdng-cases extend nearly to apex 

 of 4th abdominal segment; cremaster ^vith 4 curved diverging 

 bristles situated on a minute rounded projection; a large trans- 

 verse dorsal callosity on terminal segment of abdomen. 



Hyposmocoma ehaliaw. sp. [Fam. Hyponomeutida?]. 

 (Plate 3, fig. ?>.) 



^ , 2 . Antennae pale brown, basal segment darker, with pecten. 

 Palpi whitish, brownish on outer side of median segment, tips of ter- 

 minal segment dark brown; median segment beneath with a large, 

 pointed, forward-projecting, dense tuft of hair-scales. Head, thorax 

 and abdomen whitish ochreous, patagia brown. Forewings medium 

 brown, with a wide dorsal streak whitish ochreous sprinkled with 

 brown scales, boundary line of this streak with several sinuations; 

 cilia whitish ochreous brownish at apex with four dark-brown spots at 

 their base on termen below apex, and four on costa before apex. Hind- 

 wings and cilia whitish ochreous, a few brownish scales along costa; 

 no subcostal hair-pencil in male. Anterior and middle legs brownish; 

 posterior legs whitish ochreous with a few brownish scales on outer 

 side. Expanse of wings 16-17 mm. 



This species is readily distinguished from all other species 

 by the strongly developed tuft of the median segment of the 

 palpi. The species is named from the native name of its food 

 plant. 



Seven specimens of this moth were reared from larvae and 

 pupae found on the fronds of a bird's-nest fern (Asplenium 

 nidus), in Halawa Valley, about three miles above Honolulu 

 Plantation on the island of Oahu, Sept. 12th, 1909. All the 

 fronds of this fern w^ere badly eaten by the larvae of this moth. 

 They feed on the under surface o'f the frond, leaving the upper 

 epidermis intact, wdiich dries and gives the frond the appear- 

 ance of having numerous dead patches. The older larvae also 

 bore into the rachis, and each has a tunnel of silk and frass ex- 

 tending out onto the frond to its feeding place. It apparently 

 hides in the bored rachis except when out feeding. 



