192 LIFE-HISTORIES OF HELIODINIDA 
Larva brownish, with a few short hairs ; it webs up the top of a shoot 
and pupates in a thin silk cocoon in the bunch of leaves, the moth emerging 
inside the cocoon. Feeds on Clerodendrdy infortunatum and Anisomeles 
ovata(). 
The larva is about 10 mm. long. It folds up a leaf or webs up the tender 
top-leaves by means of white silken threads, living in shelter and eating holes 
in the leaves from within. Pupation takes place in the folded leaves or 
amongst the flower-heads, when these are available. 
The adults occur at Pusa in March, June and July-August. 
ERETMOCERA IMPACTELLA, WLK. (PLATE XXX.) 
Gelechia ? wimpactella, Wik., Cat., XXIX, 637(+). 
Eretmocera impactella, Moore, Lep. Ceylon, IL, 514, t. 209, f. 10 (1887)(?), 
Wlsm., T. E. S., 1889, pp. 34-35, 39, t. 6, f. 18(3); Hmpsn., Faun. Ind., 
Moths, I, 208, f. 135(4) ; Lefroy, Ind. Ins. Life, p. 537 (1909)(5) ; Fletcher, 
S. Ind. Ins., p. 461, f. 337 (1914)(8) ; Proc. Second. Entl. Meeting, p. 296 
(1917) (7); Yon nat AM Coat . trerllicy Te Nw '9 
Common throughout the Plains of India, Burma and Ceylon. Also 
recorded from Singapore and Formosa. 
The larva feeds on Amarantus(® 7) and is sometimes a minor pest, webbing 
up the heads of the plants. It remains more or less hidden in the folds of the 
leaves which are spun together with white silken threads. It walks very fast 
and, when walking, a small hump is produced at the hind end of the body. 
When disturbed it is able to make small springs. 
The larva is about 10 mm. long, moderately stout, cylindrical, tapering 
slightly towards either extremity, brownish-grey or brownish-yellow with a 
broad submedian darkish stripe ; head bilobed, with an inverted Y-shaped 
mark in front, posterior external part of each lobe black, rest of head speckled 
with black, with long white hairs ; prothoracic shield dark, broadly divided 
medially ; tubercles black, bearing several divergent longish white hairs, 
which give the larva rather a hairy appearance ; prolegs fully developed with 
crochets arranged in a circle. 
Pupation takes place in a cocoon of white silk, very fine and cottony, 
the cocoon being spun usually amongst the leaves. The larva rests for about 
a day inside this cocoon and then casts off the last larval skin which remains 
attached to the pupa, enclosing its anal segments. 
_ The pupa is about 6 mm. long, uniform brown, and tapers prominently 
posteriorly ; wings and legs folded ventrally, their tip about reaching the 
eighth abdominal segment. There seem to be no cremastral hooks on the 
