Insectes Sociaux

, Volume 55, Issue 2, pp 107–114

Social biology of the wood-feeding cockroach genus Salganea (Dictyoptera, Blaberidae, Panesthiinae): did ovoviviparity prevent the evolution of eusociality in the lineage?

Review article

DOI: 10.1007/s00040-008-0997-2

Cite this article as:
Maekawa, K., Matsumoto, T. & Nalepa, C.A. Insect. Soc. (2008) 55: 107. doi:10.1007/s00040-008-0997-2


Recent phylogenetic studies indicating that termites are eusocial cockroaches closely related to the genus Cryptocercus have generated fresh interest in wood-feeding Blattaria. Here we summarize the social biology of the wood-feeding genus Salganea (Blaberidae: Panesthiinae). As in Cryptocercus, Salganea exhibits long term, biparental care that includes the defense and feeding of young nymphs. Unlike Cryptocercus, however, Salganea is iteroparous: most studied species reproduce periodically over their lifetime. These divergent reproductive strategies are likely related to parental costs associated with their differing reproductive modes: Cryptocercus is oviparous, while Salganea is ovoviviparous. The pattern of parental investment associated with ovoviviparous reproduction may be one reason why Salganea and other ovoviviparous wood-feeding cockroach lineages did not evolve eusociality.


Isopteraxylophagyeusocialityparental caretrophallaxis

Copyright information

© Birkhaeuser 2008

Authors and Affiliations

  1. 1.Graduate School of Science and EngineeringUniversity of ToyamaToyamaJapan
  2. 2.Faculty of Liberal ArtsThe Open University of JapanMihama-ku, ChibaJapan
  3. 3.Department of EntomologyNorth Carolina State UniversityRaleighUSA