244 
Psyche 
[June-September 
comparative work. Since the known larvae differ little between spe¬ 
cies, the following account may be considered generic except as 
noted. 
first instar (based primarily on A. fatima : Head (Figure 7): well- 
sclerotized, scoli lacking; labrum emarginate, bearing six pairs of 
setae; frons triangular, bearing three pairs of setae, ventral margin 
concave; two pairs of adfrontal setae, upper pair shorter than lower; 
epicranium rounded, each side bearing five long setae; three setae 
associated with the stemmata (“ocelli”) and one with the antennae, 
as figured. Thorax: ventral eversible prothoracic gland between the 
legs and head; cervical shield with four pairs of setae, three dark 
pairs directed forwards, and one pale, thinner pair, directed back¬ 
wards; subdorsal chalaza on meso- and metathorax; supraspiracular 
chalaza on pro-, meso- and metathorax, that of prothorax bearing 
two setae; subspiracular chalaza on meso- and metathorax, situated 
slightly above plane of spiracles; prespiracular chalaza on pro¬ 
thorax, bearing two setae; a chalaza located between subspiracular 
and subventral chalazae on meso- and metathorax may be serially 
homologous with the prothoracic prespiracular chalaza; subventral 
chalaza on pro-, meso- and metathorax, that of prothorax bearing 
two setae. Abdomen: first segment darker than the others; subdorsal 
chalaza on segments 1-9, a small chalaza between, and posterior to, 
the subdorsal and subspiracular chalaza on segments 1-8 (situated 
posterior to subdorsal chalaza on segment 8); supraspiracular chal¬ 
aza on segments 1-9; subspiracular chalaza on segments 1-9, that of 
segment 9 bearing two setae; subventral chalaza on segments 1-10 
(segment 10 with two, located posteriorly); suranal plate rounded; 
prolegs on segments 3-6 and 10, well developed; crochets uniserial, 
uniordinal, arranged in a circle; setae (one per chalaza except as 
noted) microscopically serrate, and curved anteriorly. 
second instar (based on A. amathea, A. fatima and A. jatrophae): 
Head (Figure 7): as in first instar except for addition of a pair of 
epicranial scoli, and secondary setae in epicranial, frontal, anterior, 
and ocellar areas. Thorax: ventral eversible prothoracic gland 
between legs and head; cervical shield with four pairs of setae, two 
dark pairs and two pale pairs; subdorsal scolus on meso- and meta¬ 
thorax; supraspiracular verruca on pro-, meso- and metathorax; 
subspiracular scolus on pro-, meso- and metathorax; prespiracular 
verruca on prothorax; a verruca located between subspiracular and 
