22 
Fig. 6. Pupa of A. vitknsh. Dorsal aspect; h, 
ventral aspect; c, mandibles; clypeus and labrum, 
dorsal aspect. 
no setae on the thorax and abdomen. 
LARVA; The full-grown larva is 6 mm. long 
and 2.5 mm. wide. It is stoutly built and not 
flattened. The body width is more than twice 
that of the head capsule. Living larvae are 
yellowish in colour with the exception of the 
mouth frame and trophi, which are dark 
PACIFIC SCIENCE, Vol. VI, January, 1952 |l 
brown. Legs are absent. The thoracic and ab- 
dominal integument is finely and densely spin- i 
ulose and without sclerotized or pigmented | 
plates . Body setae are present but are small, and j 
their arrangement is difficult to discern. There I 
are nine pairs of spiracles, one pro thoracic I 
and eight abdominal. The head (Fig. Id) is t 
widest behind mid-length and is not flattened. 
It is emarginate posteriorly in the middorsal 
line where the epicranial halves meet. In both 
this and the following species, neither the j 
frontal suture nor the adfrontal suture is ! 
I 
evident, and I am unable to determine the ^ 
position of the anterior tentorial pit. The | 
disposition of the dorsal setae on the head is ; 
shown in Figure la. The antennae (Fig. ih) 
are enclosed in a pigmented ring and consist 
of one prominent sclerotized and pigmented 
segment on the apex of which are borne three 
finger-like processes, three setae, and one 
seta with a thickened collar. External to and 
posteroventrad of the antennal ring . is a 
pigmented spot probably representing an 
ocellus. The labrum (Fig. 7c) is transverse, 
slightly emarginate anteriorly, and bears four 
setae in a line across the disc and another 
seta behind these on each side of the lateral 
margin. On each side of the anterior margin 
are two setae with a third beneath them. The 
mandibles (Fig. id) are quadridentate and 
bear on the external face two setae. There is 
no bunch of long, branched hairs at the base 
of the cutting edge. Ventrally the head is 
deeply divided by the foramen (indicated by 
a broken line in Figure la) which consists of 
an anterior foramen separated by a slender 
tentorial bridge from the posterior foramen. 
Posteriorly the foramen (Fig. le) has on each 
side a triangular extension with the apex 
extending toward the posterolateral angle of 
the head capsule. The ventral mouth parts 
are shown in Figure if. The mentum bears no 
setae nor sensory pits and is separated from 
the maxillary stipes on each side by a pig- 
mented bar. The labium is large and conical 
and bears posteriorly a pair of short setae and, 
anterior to these and somewhat farther apart. 
