Molecular composition of the paralyzing venom of three solitary wasps (Hymenoptera: Pompilidae) collected in southeast Mexico.

The chemical and biological characterization of peptide and protein components of the paralyzing venom from three Pompilidae solitary spider wasps (Pepsis mexicana, Pepsis terminata, and Anoplius nigritus) is described for the first time. The molecular masses of the most abundant peptides were determined. The N-terminal sequences of two cysteine-rich peptides were obtained from Pepsis. Metalloproteinase and hyaluronidase activities were identified in the venom of P. mexicana. A novel non-lethal method to collect venom is described.