1973] 
Wheeler & Wheeler — Ant Larvae 
75 
ventrally to form a very short stout neck ; remainder of body straight ; 
both ends broadly rounded. Anus ventral.) Dorsal profile long and 
C-shaped; ventral feebly sigmoid. Leg vestiges present. Spiracles 
small; diameter diminishing posteriorly. Integument of venter of 
thorax with relatively coarse spinules in transverse rows ; a few min- 
ute spinules on dorsa of posterior somites. Body hairs moderately 
abundant. Of two types: (i) 0.044-0.138 mm long, with tip short- 
bifid to long-branched, the branches variously denticulate or branched ; 
(2) about 0.25 mm long, anchor-tipped with flexuous shaft, six on 
the dorsum of each T2, T3, AI, All and four on AIII. Cranium 
subtrapezoidal, broadest dorsally; occiput nearly flat; clypeus bulg- 
ing. Antennae each with three sensilla, each of which bears a rather 
long spinule. Head hairs moderately numerous, 0.05-0.075 mm long, 
bifid with the branches short to long. Lab rum bilobed, narrowed 
dorsally ; each lobe with two hairs on the anterior surface about 0.006 
mm long, ventral border with three isolated and two contiguous 
sensilla, posterior surface with six isolated and a cluster of three 
sensilla; entire posterior surface with a few short rows of minute 
spinules dorsally and with coarse isolated spinules ventrally. Mandi- 
bles leptothoraciform (i.e., moderately stout, tapering gradually and 
curving gradually to an apical tooth, anterior surface produced me- 
dially into a blade, which bears two medial teeth and a few denticles). 
Each maxilla paraboloidal, apex with coarse isolated spinules; each 
palp a cylinder with four apical and one subapical sensilla; each 
galea a short stout cylinder with two apical sensilla. Labium nar- 
row, anterior surface with coarse spinules, which are isolated or in 
short rows near each lateral surface; each palp a slight elevation 
with five sensilla; an isolated sensillum between each palp and the 
opening of the sericteries, the latter a transverse slit. (Material 
studied: 12 larvae from Brazil, courtesy of Drs. W. L. Brown and 
K. Lenko.) 
Tribe Ocymyrmecini 
Genus Ocymyrmex Emery 
Profile aphaenogastriform. Prothorax narrowed rapidly to the 
diameter of the head. Head small. Anus with a prominent poste- 
rior lip. Body hairs numerous, short, with frayed tip. Cranium 
subcircular. Antennae high on cranium, minute and in pits. Head 
hairs few, short, with bifid tip. Labrum paraboloidal, as long as 
broad. Mandibles vollenhoviform but with only one medial tooth. 
In our 1960b key this genus would fit under Group D but would 
require a new rubric: 6. Body aphaenogastriform (Di) ; mandibles 
vollenhoviform (Ilf). 
