Abdominal markings of <i>Latrodectus</i> spp. from Northern Argentina. Diagrammatic illustrations showing the ventral abdominal patterns, including the epigastric furrow (e) and spinnerets (s); booklungs, epigyna, and lateral extensions of the dorsal pattern are not shown. 1-5: <i>Latrodectus</i> No. 1; 6-10: <i>Latrodectus</i> No. 2; 11-15: <i>Latrodectus</i> No. 3; 16-19: <i>Latrodectus</i> No. 4.
L.J. Pinter, in: Psyche 74:290-298
1967
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