Wheeler and Wheeler — Myrmicine Larvae 133 
Genus Trigonogaster Forel 
Long, slender, club-shaped, with only the prothorax bent 
ventrally to form a very short neck; posterior end broadly 
round. Body hairs moderately numerous, very short, usual- 
ly with a short-bifid tip. Antennae minute. Head hairs 
few, long and with some part of the distal half finely den- 
ticulate. Labrum trilobed, with the median lobe projecting 
posteriorly; posterior surface densely spinulose. Mandibles 
curved medially; apical tooth round-pointed and curved 
medially; a large anterior subapical tooth directed antero- 
ventrally; a large blunt medial tooth directed posteroven- 
trally and sometimes covered with spinules ; teeth surround- 
ing a denticulate area; anterior surface with many long 
slender spinules arranged in transverse arcuate rows. 
Maxillary palp a peg bearing five sensilla. Labium with 
a median anteroventral spinulose projection, with the open- 
ing of the sericteries at its apex; labial palp a low knob 
bearing five sensilla. Hypopharynx with numerous trans- 
verse rows of minute spinules. 
Trigonogaster recurvispinosa kemneri Wheeler 
(Text fig. 1, A-F) 
Long, slender, club-shaped, with only the prothorax bent 
ventrally to form a very short neck; posterior end broadly 
rounded. Anus posteroventral. Spiracles small, the meso- 
thoracic larger than the others. Integument with minute 
spinules on the ventral surface of the thorax. Body hairs 
moderately numerous, uniformly distributed, very short 
(0.018-0.108 mm), usually with very short-bifid tip; with 
alveolus and articular membrane. Head moderately large; 
cranium transversely subelliptical, slightly broader than 
long. Antennae minute, each with three sensilla, each of 
which bears a spinule. Head hairs few, long (0.04-0.105 
mm) and with some part of the distal half finely denticulate. 
Labrum short (breadth 2x length), trilobed, the median 
lobe projecting posteriorly; anterior surface of each lateral 
lobe with 2-3 minute hairs and/or sensilla; ventral border 
of each lateral lobe spinulose and with one isolated and two 
contiguous sensilla; posterior surface of each half with 
3-4 isolated and two contiguous sensilla; posterior surface 
densely spinulose, the spinules minute and in numerous 
