8o 
Psyche 
[March-J une 
Six feebly differentiated somites. Spiracles small ; decreasing in diam- 
eter posteriorly. Integument of ventral surface of anterior somites 
with minute spinules in short transverse rows, entire surface of poste- 
rior somites with scattered minute spinules. Body hairs moderately nu- 
merous. Of three types: (i) 0.013-0.036 mm long, simple, tip very 
fine and flexuous; (2) 0.022-0. 13 mm long, tip denticulate, a few on 
each somite; (3) about 0.2 mm long, with flexuous shaft and anchor- 
tip, four on each AI-AIV. Cranium subcircular in anterior view. 
Antennae moderately large; just below middle of cranium; each with 
three small sensilla, bearing a spinule each. Head hairs moderately 
numerous, short to moderately long. Of two types: (1) 0.01 9-0.03 
mm long, simple, with long fine flexuous tip, the more numerous 
type; (2) 0.028-0.075 mm long, with short-branched tip. Labrum 
arcuate; with eight hairs 0.025-0.038 mm long; ventral border with 
four isolated and two clusters of three sensilla each ; posterior sur- 
face with four isolated and two clusters of three sensilla each; spi- 
nules lacking. Mandibles cryptoceriform (i.e., stout, subtriangular in 
anterior view; lateral portion thick and terminating in a sharp-pointed 
apical tooth ; medial blade arising from the anterior surface and bear- 
ing two subapical teeth, which are subequal to apical tooth). Max- 
illae rounded and adnate; each palp a short peg with five sensilla, 
larger than the galea, the latter a short cylinder with two apical 
sensilla. Labium small ; each palp a short stout peg with five sensilla ; 
an isolated sensillum between each palp and the opening of the seric- 
teries, the latter a short transverse slit. No spinules on hypopharynx. 
immature larva. Length (through spiracles) about 3.1 mm. 
Body relatively stouter. Head on anterior end. Integument of dorsal 
surface of posterior somites with rather coarse spinules. Body hairs 
(1) 0.025-0.05 mm long; (2) 0.0 19-0. 125 mm long; (3) about 
O.225 mm long, four on the dorsal surface of each AI-AIV. Other- 
wise similar to mature larva. 
very young larva. Estimated length about 1.4 mm. Similar 
to the immature larva except as follows. Body hairs sparse: (1) 
0.002-0.025 mm long; (2) 0.024-0.05 mm long, with tip denticulate 
to flattened; (3) about 0.086 mm long, on AI-AVI. Head hairs 
sparse, all short spikes (about 0.003 mm long). Anterior surface of 
labrum with six hairs about 0.006 mm long. Each mandible with the 
apex turned medially; all teeth narrowly sharp-pointed. Each labial 
palp represented by a cluster of five sensilla. 
Material studied: 14 larvae from Brazil, courtesy of Dr. K. 
Lenko. 
