1973] 
Wheeler & Wheeler — Ant Larvae 
81 
Procryptocerus regular if Emery 
Length (through spiracles) about 5.4 mm. Similar to P. adlerzi 
except as follows. Body stouter; head relatively larger. Integument 
with few spinules on the anterior somites. Body hairs (1) 0.013- 
0.05 mm long; (2) 0.038-0.1 13 mm long; (3) four on the dorsa 
of each AI-AIV. Cranium transversely subelliptical. Antennae 
larger. Head hairs numerous; (1) 0.007-0.05 mm long; (2) 0.038- 
0.087 mm long. Labrum feebly bilobed, with eight hairs 0.01 3-0.05 
mm long; each lobe with six isolated and two contiguous sensilla on 
and near the ventral border; entire posterior surface with a few 
transverse rows of minute spinules. Each mandible with apical tooth 
longer and basal teeth shorter. Each galea represented by two con- 
tiguous sensilla. Each labial palp represented by a cluster of five 
sensilla. Hypopharynx with a few transverse rows of minute spi- 
nules. 
young larva. Length (through spiracles) about 1.8 mm. Sim- 
ilar to mature larva except as follows. Entire integument with min- 
ute spinules, in short rows anteroventrally, elsewhere isolated, 
coarsest posteriorly. Body hairs sparse; (1) 0.003-0.044 mm long; 
(2) 0.013-0.088 mm long; (3) 0.125-0.188 mm long. Head hairs 
moderately numerous, 0.003-0.044 mm long, simple. Hairs on labrum 
about 0.003 mm long. 
youngest larva. Length (through spiracles) about 1 mm long. 
Similar to young larva except as follows. Body egg-shaped. Spiracles 
very small. Integument with spinules on the dorsal surface of abdo- 
men from spiracle to spiracle, more extensive on AIX and AX. 
Body hairs very sparse; (1) 0.003-0.025 mm long, few, none on 
AIX and AX: (2) 0.025-0.075 mm long, few, with short-bifid to 
short-multifid tip, on lateral surfaces; (3) 0.09-0.18 mm long, four 
on the dorsum of each AI-AVII, with straight shaft and smooth 
anchor-tip. Head hairs very few, about 0.003 m m long. Posterior 
surface of labrum lacking spinules. Each mandible with one apical 
and one medial tooth. Each maxillary palp represented by a cluster 
of sensilla. Labium and hypopharynx without spinules. 
MALE LARVA. Length (through spiracles) about 5.8 mm. Sim- 
ilar to worker larva except as follows. Thirteen feebly differentiated 
somites. Body hairs (3) about 0.15 m m long, four on the dorsal 
surface of each AI-AIV. Cranium subrectangular. Head hairs 
(1) 0.013 mm long; (2) about 0.38 mm long, with short-bifid tip, 
about eight on the cranium. Mandibles heavily sclerotized. 
Material studied : numerous larvae from Brazil, courtesy of Dr. 
K. Lenko. 
