title: Male competition facing one conspecific female in the cave-living bathysciinae speonomus delarouzeei fairm. (Coleoptera, Catopidae).
abstract: When 2 S. delarouzeei males face one female, the latter does not choose between them, she copulates with the male which wants to mate. There is considerable aggression when the both want to copulate. The aggression rate is the highest in triplets in which both males copulate. In most cases, the males mate consecutively in spite of competitor attacks. This behavior protects the female against a sterile male. It may take place in caves where large numbers of individuals are observed around food sources.
authors.affiliation: Laboratoire souterrain du CNRS, Moulis, 09200 Saint-Girons, France.
authors.forename: L
authors.initials: L
authors.lastname: Juberthie-Jupeau
authors.forename: M
authors.initials: M
authors.lastname: Cazals