Inhibits voltage-gated sodium channels by binding to site 3. Insecticidal neurotoxin (By similarity). Expressed by the venom gland. The presence of a 'disulfide through disulfide knot' structurally defines this protein as a knottin. Belongs to the neurotoxin 14 (magi-1) family. 09 (magi-1) subfamily. Truncated N-terminus.