T, BAINBRIGGE FLETCHER 15 
OXYPTILUS CAUSODES, MEYR. 
Oxyptilus causodes, Meyr., B. J., XVI, 582 (1905)(') ; Fletcher, Spolia Zeylan., 
VI, 24-25, t. Af. 4, t. Ef. 9 (1909)(2). 
Originally described from Peradeniya(' *), this species also occurs in 
India and has been found at Pusa. The adult is, however, rarely seen, although 
easily bred from the larva which, in Ceylon, feeds inside the fleshy fruits of 
Dillenia retusa. In India it must have other foodplants, since, so far as I 
am aware, no species of Dillenia occurs at Pusa in the immediate vicinity of 
the locality where the adult moth has been taken. 
“The full-grown larva (suspended for pupation) is about 13° mm. long 
by about 1-2 mm. broad, cylindrical, slender, shining, and appearing quite 
smooth and naked. There are two principal colour varieties, (1) wholly 
pale green without any noticeable markings except a narrow darker medio- 
dorsal stripe, and this is perhaps due to the vessels beneath showing through 
the skin-rather than to any dermal pigmented area ; towards the anal ex- 
tremity a pinkish suffusion is seen along the segmental interstices, (2) very 
paie semi-transparent pinkish flesh-colour, interstices of segments very pale 
semi-transparent green, as are also some patches along the sub-median area 
of most of the segments, but the pale green and pink so merge into one another 
that no definite areas can be described. Head very pale green. A pale red 
medio-dorsal line. But some larvee have no green markings, being wholly pink. 
The prolegs are very small and stumpy; hooks dark reddish. The hooks 
on the fourth pair of prolegs are attached into the silken pupation-pad. The 
arrangement of the tubercles is shown in the figure (Plate E, figure 9) ”’(?). 
When full-fed the larva emerges from the fallen fruit “to suspend. itself 
for pupation on any neighbouring object.” “ The larva pupates very rapidly 5 
twelve hours is sufficient for it to emerge from the fruit, select a suitable place 
for pupation, suspend itself, and complete its metamorphosis.’ 
“The newly-formed pupa is of a bright light green colour, the capital 
extremity tinged with yellowish-brown about the base of the antenna-sheath ; 
but it soon becomes of an almost uniform reddish grey-brown. The moth, 
which usually seems to emerge early in the morning, appears after six days ’’(*). 
XYROPTILA VAUGHANI, FLETCHER. 
Oxyptilus vaughani, Fletcher, Spolia Zeylan., VI, 23-24 (1909)('). 
This species was described from Ceylon (Madulsima, Alutnuwara, Trin- 
comali and Haldummulla). The early stages are as yet unknown, but the larva 
probably feeds inside the fruit of Dimorphocalyx glabellus('), and the moth 
has been reared from a pupa found on a leaf of this shrub. 
