About Bastilla arcuata (Moore, 1877)
Bastilla arcuata has a wingspan that measures approximately 48 to 54 mm. On the forewings, the antemedial line is sinuous. A curved medial line lies beyond the violaceous band, and meets the angled postmedial line at both the costa and the inner margin. The outer edge of the oblique apical streak is excised. The larva of this species has a brown head marked with whitish-yellow spots. The first two pairs of abdominal prolegs are rudimentary, and an almost circular black spot is present on the front of the larva. The larval body is generally brown with dark spots. Setae grow from yellow chalazae that are ringed with black, and two of the larva's tubercles are salmon pink. The larvae feed on species from the Glochidion and Phyllanthus genera. The pupa of Bastilla arcuica has white efflorescence.
