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CRETACEOUS CHALCIDOID FOSSILS FROM CANADIAN AMBER

  • Carl M. Yoshimoto (a1)
Abstract

This is the first paper on Canadian Cretaceous chalcidoid fossils of the families Mymaridae, Trichogrammatidae, and Tetracampidae, based on 54 specimens representing 12 species from Manitoba and Alberta. Four new subfamilies are proposed, Triadomerinae (Mymaridae), Baeomorphinae, Distylopinae, and Bouceklytinae (Tetracampidae). Descriptions and remarks are given for Archaeromma nearctica n. gen., n. sp.; A. minutissima (Brues) (Mymaromminae); Triadomerus bulbosus n. gen., n. sp.; Carpenteriana tumida n. gen., n. sp.; Protooctonus masneri n. gen., n. sp. (Mymaridae); Enneagmus pristinus n. gen., n. sp. (Trichogrammatidae); Distylopus bisegmentus n. gen., n. sp.; Baeomorpha distincta n. gen., n. sp., B. dubitata Brues (transferred from Scelionidae, Prototrupoidea), B. elongata n. sp., B. ovatata n. sp. and Bouceklytus arcuodens n. gen., n. sp. (Tetracampidae). A list of all previously known fossil Chalcidoidea is provided. A table of primitive and specialized conditions of characters studied is given. The possible lines of phylogeny of families and genera of these fossils are discussed. Keys to the pertinent families and subfamilies and to the fossil species of Baeomorpha are provided. Photomicrographs of species treated are included.

Voici le premier article sur les fossiles Chalcidoïdés du Crétacé au Canada; ils appartiennent aux familles Mymaridées, Trichogrammatidées et Tétracampidées. Plus de 54 spécimens représentant 12 espèces furent récoltés au Manitoba et en Alberta. L’auteur propose quatre nouvelles sous-familles: les Triadomérinées (Mymaridées), Baeomorphinées, Distylopinées et Bouceklytinées (Tétracampidées). Il décrit et commente Archaeromma nearctica n. gen., n. sp.; A. minutissima (Brues) (Mymaromminées); Triadomerus bulbosus n. gen., n. sp.; Carpenteriana tumida n. sp.; Protooctonus masneri n. gen., n. sp. (Mymaridées); Enneagmus pristinus n. gen., n. sp. (Trichogrammatidées); Distylopus bisegmentus n. gen., n. sp.; Baeomorpha distincta n. gen., n. sp., B. dubitata Brues (transferré des Scélionidées, Prototrupoïdées),B. elongata n. sp.,B. ovatata n. sp. et Bouceklytus arcuodens n. gen., n. sp. (Tétracampidées). Il fournit une énumération de tous les fossiles Chalcidoidés précédemment connues. Il donne des conditions primitives et spécialisées des caractères étudiés. Il discute les lignées possibles de la phylogénie des familles et des genres de ces fossiles. Il fournit des clés des familles et sous-familles pertinentes et des espèces fossiles de Baeomorpha. Et il ajoute des photomicrographies des espèces traitées.

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References
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The Canadian Entomologist
  • ISSN: 0008-347X
  • EISSN: 1918-3240
  • URL: /core/journals/canadian-entomologist
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