Reconstructing the Past of Cryptocercus (Blattaria: Polyphagidae): Phylogenetic Histories and Stories

  • Grandcolas P
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Recent phylogenetic studies showed that the genus Cryptocercus belongs to the subfamilyPolyphaginae.Thisresult is wellsupportedbythetotalcongruencebetweenthese analyses which were independently carried out on morphology and on neuropeptides from corpora cardiaca. Other recent studies contradict each other and are based on incorrectly deÞned characters or inappropriate methodologies. Preconceived ideas concerning Cryptocercus (primitiveness, relict distribution) deÞnitely need to be confronted with facts. Facts indicate that Cryptocercus has a surprisingly high dispersal ability and that its present preferenda and distribution suggest a late Tertiary origin. Speculations about unwarrantedly clock-like evolution and dubious fossil records should not be preferred to both congruent phylogenetic framework and facts

Author-supplied keywords

  • Biogeography
  • Blattaria
  • Cockroaches
  • Cryptocercus
  • Polyphagidae
  • Symbiosis

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  • P. Grandcolas

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