Catalyzes the hydrolysis of phosphatidylcholine with phospholipase A1 activity. Shows hemolytic activity (Probable). a 1,2-diacyl-sn-glycero-3-phosphocholine + H2O = a 2-acyl-sn-glycero-3-phosphocholine + a fatty acid + H(+) Expressed by the venom gland. Contains six disulfide bonds. N-glycosylated; contains mannose. Causes an allergic reaction in human (PubMed:3192865). It exhibits some cross-reactivity with IgE antibodies from patients sensitized to other Hymenoptera venoms (PubMed:15753912). Belongs to the AB hydrolase superfamily. Lipase family.