What does Cryptocercus kyebangensis, n.sp. (Dictyoptera: Blattaria: Polyphagidae) from Korea reveal about Cryptocercus evolution? A study in morphology, molecular phylogeny, and chemistry of tergal glands - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Proceedings of the Academy of Natural Sciences of Philadelphia Année : 2001

What does Cryptocercus kyebangensis, n.sp. (Dictyoptera: Blattaria: Polyphagidae) from Korea reveal about Cryptocercus evolution? A study in morphology, molecular phylogeny, and chemistry of tergal glands

Philippe Grandcolas
Yung Chul Park
  • Fonction : Auteur
Jae C. Choe
  • Fonction : Auteur
Maria-Dolors Piulachs
  • Fonction : Auteur
Xavier Bellés
  • Fonction : Auteur
Cyrille d'Haese

Résumé

The description of a new species of the woodroach Cryptocercus kyebangensis Grandcolas from South Korea offers the opportunity to bring comparative information within the genus. This species, though morphologically very similar to other East Asian and North American species, presents conspicuous differentiation of both ribosomal genes (sequenced fragments of 12S and 16S) and chemical blends from tergal glands (proportions of linalyl acetate and the alcohol 4, 6, 8-trimethyl-7, 9-undecadien-5-ol, compounds previously identified in females originating from North America). A phylogenetic reconstruction involving Blatta orientalis as an outgroup, Therea petiveriana as a polyphagid relative, C. kyebangensis and 17 North American Cryptocercus populations showed that C. kyebangensis stands as a sister-group of North American Cryptocercus, thus suggesting that one beringian vicariance has taken place in the early differentiation of the genus. Using sequence divergences within the framework of the molecular clock leads to comparable datation estimates for both ribosomal genes, ranging between Miocene and Pliocene for the whole history of the genus Cryptocercus, therefore congruent with previous phylogenetic biogeographical estimates. This new set of data for this East Asian species supports heterobathmy in the genus Cryptocercus and argues against the misleading “primitive taxon” concept.
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hal-00458708 , version 1 (22-02-2010)

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Philippe Grandcolas, Yung Chul Park, Jae C. Choe, Maria-Dolors Piulachs, Xavier Bellés, et al.. What does Cryptocercus kyebangensis, n.sp. (Dictyoptera: Blattaria: Polyphagidae) from Korea reveal about Cryptocercus evolution? A study in morphology, molecular phylogeny, and chemistry of tergal glands. Proceedings of the Academy of Natural Sciences of Philadelphia, 2001, 151 (1), pp.61-79. ⟨10.1635/0097-3157(2001)151[0061:WDCKNS]2.0.CO;2⟩. ⟨hal-00458708⟩
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