New maimetshid wasps in Cretaceous amber from Myanmar (Insecta: Hymenoptera) |
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Authors: | Vincent Perrichot |
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Institution: | 1. CNRS UMR 6118 Géosciences et OSUR, université Rennes 1, campus de Beaulieu, bât. 15, 263, avenue du Général-Leclerc, 35042 Rennes cedex, France;2. University of Kansas Biodiversity Institute, Division of Entomology, 1501 Crestline Drive, Lawrence, KS 66049, USA |
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Abstract: | The extinct, exclusively Cretaceous wasp family Maimetshidae is newly recorded from Earliest Cenomanian Burmese amber. Two new genera and species are described. Burmaimetsha concava gen. et sp. nov., based on a male and a female, is most similar to Guyotemaimetsha Perrichot, Nel & Néraudeau, from Albian-Cenomanian French amber, but differs in its larger mandibles, distinctly concave face, elongate antennomeres, and forewing with cell 1Rs] smaller and fourth abscissa of Rs shorter. Maimetshasia kachinensis gen. et sp. nov., is based on a male, and is characterized by asymmetric mandibles with two and three teeth, by its forewing venation without cross-vein 2rs-m, with cell 1M] large and trapezoidal, and vein 2Rs + M very short, and by the hind wing without a free apex of Rs. The family was evidently widespread in the Cretaceous, and the new records extend the paleobiogeographical range to the South-East of Eurasia. A discussion about the possible biology of Maimetshidae is provided. |
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Keywords: | Insecta Apocrita Maimetshidae Amber Mesozoic Cenomanian |
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