Probable toxin. Does not show insecticidal, antimicrobial and antiparasitic activities. Does not induce increase in intracellular calcium in mouse DRG neurons, suggesting that it does not induce pain. Expressed by the spine venom secretory cell. The spine is a cuticular structure containing at its base a single large nucleated venom secretory cell, as well as a central venom reservoir extending throughout the spine. It is an independent unit capable of producing, storing, and injecting venom. Spines are grouped by 50 to 100 in each of the eight venom scoli on the back of D.vulnerans caterpillars. Only secreted by caterpillars. Adult moth do not have spines. Belongs to the limacoditoxin-13 family.