A proturan (Acerentulus confines (Berlese)) was observed and videotaped in an encounter with a springtail (Tomocerina lamellifera (Mills)). Following repeated contacts between the two, the proturan released a sticky exudate when a leg of the springtail came in contact with the proturan's abdomen. The exudate stretched to a 1-mm length before snapping. This exudate emanated from the large gland openings on the eighth abdominal segment. Comparison with the few other videotaped examples of proturan defensive behavior suggests that the exudate is released only after repeated contact between the proturan and another organism.