Is toxic to mice but not to insects. Expressed by the venom gland. The primary structure of the mature peptide is identical to that of U1-theraphotoxin-Lp1a (Lasiotoxin-1) from Lasiodora parahybana (AC P0CC18). Belongs to the neurotoxin 12 (Hwtx-2) family. 04 (lasiotoxin) subfamily.