132 
Psyche 
[December 
and fifth abdominal somites ; posterior end broadly rounded, 
anterior end formed from the dorsum of the prothorax. 
Anus posteroventral. Leg vestiges present. Segmentation 
indistinct. Integument of ventral surface of thorax and 
abdominal somites i-iii with numerous transverse rows of 
spinules. Body hairs moderately numerous, short ( 0 . 036 - 
0.126 mm), all with denticulate tip; hairs without alveo- 
lus and articular membrane except on the prothorax. 
Head moderately large; cranium transversely subelliptical, 
breadth 1.25 X length. Antennae small, each with three 
(rarely two) sensilla, each of which bears a spinule. Head 
hairs few, short to moderately long ( 0 . 018 - 0.072 mm), with 
denticulate tip. Labrum small, short (width 2X length), 
trilobed, the median lobe projecting posteriorly; anterior 
surface of each lateral lobe with three minute hairs and/or 
sensilla ; ventral border of each lateral lobe with three sen- 
silla and several short oblique rows of exceedingly minute 
spinules; posterior surface of each half with 1-2 isolated 
and a cluster of 3-4 sensilla; posterior surface spinulose, 
the spinules minute and in numerous long transverse rows. 
Mandibles slender and thin; curved medially; apical tooth 
curved medially and posteriorly; a large anterior subapical 
tooth directed anteroventrally ; a large blunt medial tooth 
directed posteroventrally ; teeth surrounding a denticulate 
area; anterior surface with several sharp spinules. Maxil- 
lae with the apex paraboloidal; palp a peg with one sub- 
apical (bearing a spinule) and four apical sensilla; galea 
a rather tall peg with two apical sensilla. Labium with a 
median anteroventral projection covered with short rows 
of minute spinules; palp a low knob with five sensilla (one 
of which bears a spinule) ; a minute sensillum between 
each palp and the opening of the sericteries; the latter a 
transverse slit on the end of the projection. Hypopharynx 
with a few oblique rows of minute spinules. 
Sexual larva : Elongate-ovoidal ; head small, on the ven- 
tral surface near the anterior end. Body naked. Head naked 
but with minute sensilla. Mandibles with all teeth directed 
medially. Otherwise similar to worker larva. 
Material studied : numerous slightly damaged larvae from 
Java labelled ‘Var. opaciceps Viehmeyer.’’ 
