98 INSECTS NOXIOUS TO AGRICULTURE. 
Young larva free, active, elongated, slightly convex, tapering 
to the anal extremity; colour yellow; length, about goin. An- 
tenn as in adult, with six joints. Feet somewhat large. Anal 
tubercles thick, conspicuous, setiferous, with one short hair, On 
the edge of the body a row of conical spines set far apart, and 
- on the dorsum four other longitudinal rows. 
Adult male red in colour, about jin. long. Antenne of 
nine joints, all bearing hairs; the last joint nearly globular. 
Feet slender; digitules fine hairs. Abdominal spike short, thick, 
with sometimes a curved appendage. <A rather strong seta on 
each side of the base of the spike. 
As a rule, the adult female is nearly buried in a circular 
depression, or pit, formed in the leaf, and with the wall of the 
pit somewhat curled over it. On the other side of the leaf is a 
corresponding elevation, of a brown colour. Diameter of pit, 
about ;4zin. The abdominal pencil of cotton and the anal 
tubercles of the female usually protrude at the edge of the pit, 
probably to attract the male. After gestation, the female dis- 
appears within the pit, and the young larve are also sheltered in 
it for a while. 
Sometimes two females inhabit the same pit. 
The females which are not in pits are generally of a 
dark-red, or brown, colour. 
Habitat — On Santalum Cunninghamii (maire), Te Aute, 
Hawke’s Bay. 
A very distinct species, easily distinguishable by the pits on the | 
leaves. 
