10 
Psyche 
[Vol. 91 
flatbottomed pits which first appear in small numbers in instar two, 
three, or four depending upon the species. These may be the same 
color as the rest of the head capsule or may be a contrasting color. 
Facial stripes appear in the fourth instar of some species as well. 
The body now bears stubby scoli (each with 3-5 radiating apical 
spines). These scoli are arranged in three rows (subdorsal, supra- 
spiracular, and subspiracular), thus, each body segment has three 
pairs of scoli. The subdorsal scoli on thoracic segments 2 & 3 and 
abdominal segments 2, 7, & 8 are very slightly larger than the others, 
but all are similar in form. 
Beginning with the second instar there are color and pattern 
changes in some species, but most are fairly uniformly colored 
(brown, green, or black) and have paler scoli and tiny spots, much 
as the first instar. In Adelpha basiloides, the larval color depends 
upon the foodplant; larvae are light brown or reddish brown on 
Amaioua, and dark brown on Alibertia and Bertiera. 
THIRD AND FOURTH INSTAR LARVAE 
From instar three on, the face is framed by two distinct rings of 
chalazae, and body scoli show further development, especially those 
scoli which will be the largest or most distinctive in the final instar. 
By late fourth instar, body scoli have become swollen at the bases 
due to developing final instar scoli inside. In these two instars, the 
scolus spines are pale, and as before, the body is speckled with tiny 
pale spots. 
A dorsal, paler patch (“saddle”) appears in the third or fourth 
instar of many species. In A. salmoneus and cytherea the “saddle” is 
faint and extends from abdominal segment 2 or 3 through segment 
6. A. cocala and leucophthalma may have a “saddle” on abdominal 
segments 5-6. A. justina is pale dorsally from thoracic segment 2 
through abdominal segment 8. A. basiloides, nr. paraena, and 
celerio have a triangular “saddle” with its base on the posterior 
portion of abdominal segment 4, and its apex at mid abdominal 
segment 6. In the latter two species the “saddle” is poorly defined; in 
A. basiloides it is sharply demarcated. 
“♦Terminology of Peterson (1962). chalazae(AE): a distinctly elevated cone-shaped 
area, bearing 1-3 simple setae; (SCOLUS(i): an elongated projection, bearing 4 or more 
setae or spines. 
