[Vol. 92 
448 
Psyche 
d 
Figure 1 . Proatta butelli larva, a, Head in anterior view, X 1 22; b, 3 types of body 
hairs, X400; c, larva in side view, X42; d, left mandible in anterior view, X640. 
rows of spinules. Body hairs sparse; generally distributed. Of 3 
types: (1) 0.025-0.1 mm long, unbranched, smooth, slender, with tip 
more or less curved; (2) about 0.025 mm long, few, with bifid tip; (3) 
about 0.006 mm long, unbranched, smooth, few, on venter of 
thorax. Cranium subheptagonal, about 1 / 2 times broader than long. 
Antennae just above midlength of cranium; minute; with 3 sensilla 
each. Head hairs few; 0.013-0.056 mm long, unbranched, smooth, 
slightly curved. Mouth parts small. Labrum trilobed; anterior sur- 
face of each lateral lobe with 2-3 sensilla near ventral border; mid- 
dle lobe with a cluster of 3-4 sensilla near each ventrolateral corner. 
Mandible amblyoponoid; moderately sclerotized; moderately stout; 
apex a short slender tooth; a small subapical medial tooth. Maxilla 
adnate; subovoidal in anterior view; palp a small skewed peg with 5 
(1 apical, 3 subapical and 1 basal) sensilla; galea a slender frustum 
with 2 apical sensilla. Labial palp a slight elevation with 5 sensilla; 
an isolated sensillum between each palp and the opening of the 
sericteries; the latter a short transverse slit. (Material studied: 
