Inhibits insect, but not mammalian, voltage-gated calcium channels (Cav). Expressed by the venom gland. The presence of a 'disulfide through disulfide knot' structurally defines this protein as a knottin. Belongs to the neurotoxin 08 (Shiva) family. 01 (omega toxin) subfamily. Signal and propeptide sequences are imported from ArachnoServer. The sequence differences may reflect different paralogs.