Trap-door spider

There are about 30,000 species of spiders, virtually all of which produce venom. Fortunately, most lack dangerous quantities of venom or the means to deliver it. Nevertheless, about 200 species of spiders are significantly poisonous to humans. Many of these have colorful common names, such as tarantula, trap-door spider, black widow, giant crab spider, poison lady, and deadly spider. Space permits only a brief discussion of spider venoms here. 

Aptotoxin VII, from venom of a trap-door spider Rantuerin-2csa, broad-spectrum antibacterial peptide, identification of a full-length helix-turn-helix motif Oral mucosal a-defensin from Rhesus macaque Cobatoxin 1, scorpion venom... 

The two polyamines Het 389 (C21H35N5O2, Mr 389.54) and Het 403 (C22H37N5O2, Mr 403.57) have been identified in the venom of the trap door spider Hebestatis theveniti and a species of tarantula (Harpactirella sp.). In contrast to other polyamines from spiders they do not contain amino acids. 

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