98 LIFE-HISTORIES OF COSMOPTERYGIDA 
Larva in cotton-seed (% % 3¢,4 5:6 % 8 %) in India (% 8), Burma( 7’), 
Java(#), Formosa(!°), Mauritius(®), E. Africa(®), Egypt(? 8a, >), and West 
Africa(} 8). Described by Lefroy(7) and Willcocks( 8a ). 
* Stagmatophora coriacella, .. . . can be bred in abundance from dry 
cotton seeds left too long on the plant. The caterpillar is red, not unlike 
that of Gelechia gossypiella, only smaller and is not found in the green boll 
or in unripe seed, as is the latter, and is nof destructive. We have reared 
this from cotton-seed from many parts of India, and I. H. Burkill sent it in 
from Amherst, Burma’’(?). 
Willcocks gives( 3a) the following more complete description of the early 
stages and figures the full-grown larva and pupa [erroneously referred to on 
the plate as P. gossypiella] :— 
“ Hag. Very minute, oval, convex, measuring about 0°36 mm. long by 
0:22 mm. wide, the shell longitudinally striated. Laid on damaged ripe 
cotton bolls and the exposed parts of the interior. 
“Larva. The larvee feed on the injured seeds and fibre and general 
debris to be found in bolls which have been attacked by bollworms. At 
first the larve are white with a brownish head; later and whilst still quite 
small, they may become pinkish or sometimes they will be found to be quite 
dark-coloured owing to their having fed on dark coloured decayed matter, 
which shows through the somewhat transparent skin ; or again, the 
skin may be covered and thus discoloured by the spores of the black sooty 
fungus frequently present in damaged cotton-bolls late in the year. When 
full-grown the larva (Plate VII, fig. 9) measures some 7 to 8 mm. long by 
15 mm. broad. The head is light yellowish-brown and the thoracic shield 
is of the same colour but paler. The body is pale or slightly yellowish with 
two conspicuous and very distinct reddish-pink transverse and narrow bars 
on the back of each segment. The transverse barrings are so distinct that 
this character alone serves to distinguish the Pyroderces larva from the pink 
bollworm [Gelechia gossypiella], in which the reddish-pink colour is much 
more generally suffused over the dorsum; and moreover, Gelechia larve of 
the size of the Pyroderces larva are, generally speaking, still white or white 
with faint pink suffusions around the hair tubercles. 
« Pupa. The pupa (Plate VU, fig. 8) may be found in the damaged boll 
enclosed in a light cocoon of silk. It is smaller and less robust than the pupa 
of Gelechia, and is of a different form as will be seen if the illustrations of the 
two species are compared. The pupa of the pink bollworm is hairy and 
has several small hooklets near the tip of the abdomen. These are not present 
on the Pyroderces pupa.” 
