About Proserpinus flavofasciata Walker, 1856
This species, Proserpinus flavofasciata Walker, 1856, has the following characteristics. Adult moths are day-flying bumblebee mimics with plump black bodies marked with yellow. Their black forewings feature a pale band, and their also-black hindwings bear a prominent yellow band. Adults fly during late spring and early summer. Larvae of this species develop through multiple instars that have drastically different appearances. The penultimate larval instar is pale green with two pale stripes running along its sides, and has a short horn at its tail end. The final larval instar is brown with black spots; it no longer retains the tail horn, and instead has a white-edged black button in that location. Larvae feed on a variety of Epilobium and Rubus species, including the specific species Rubus parviflorus. This species overwinters in the pupal stage inside soil.
