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CRICKETS (GRYLLOPTERA: GRYLLOIDEA) IN DOMINICAN AMBER

Published online by Cambridge University Press:  31 May 2012

Vernon R. Vickery
Affiliation:
Emeritus Curator, Lyman Entomological Museum and Research Laboratory, McGill University, Macdonald Campus, 21,111 Lakeshore Road, Ste-Anne-de-Bellevue, Quebec, Canada H9X 3V9
George O. Poinar
Affiliation:
Entomology and Parasitology Department, University of California, Berkeley, California, USA 94720

Abstract

Twenty-eight pieces of amber from the Dominican Republic were studied. These pieces, 22–40 million years old, contain 29 cricket specimens as inclusions. Six new species in the Trigonidiidae: Trigonidiinae are described, one in the extant genus Anaxipha (A. dominica) and in three related new genera: Proanaxipha (P. latoca and P. bicolorata), Abanaxipha (A. longispina and A. incongrua), and Grossoxipha (G. yaque). One specimen is described in the Mogoplistidae: Mogoplistinae in the extant genus Ornebius (O. ambericus). The presence of these specimens in amber proves that utilization of the boreal habitat is of long standing. Disparity in the size of the hind legs of one specimen indicates that crickets may once have had the ability to regenerate lost limbs.

Résumé

Vingt-huit morceaux d’ambre provenant de la République dominicaine ont été examinés. Ces morceaux, qui remontent à 22–40 millions d’années, contenaient 29 spécimens de grillons. On trouvera ici la description de six nouvelles espèces de Trigonidiidae : Trigonidiinae, d’une espèce du genre actuel Anaxipha (A. dominica) et de trois nouveaux genres apparentés : Proanaxipha (P. latoca et P. bicolorata), Abanaxipha (A. longispina et A. incongrua) et Grossoxipha (G. yaque), ainsi que d’un spécimen du genre actuel Ornebius (O. ambericus) (Mogoplistidae : Mogoplistinae). La présence de ces insectes dans l’ambre prouve que l’utilisation de l’habitat boréal remonte à une époque très ancienne. L’inégalité des pattes postérieures chez l’un des spécimens indique que les grillons ont peut-être déjà possédé la faculté de regénérer leurs membres perdus.

[Traduit par la Rédaction]

Type
Articles
Copyright
Copyright © Entomological Society of Canada 1994

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References

REFERENCES

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