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The first skiff beetle (Coleoptera: Myxophaga: Hydroscaphidae) from Early Cretaceous Jehol Biota

Published online by Cambridge University Press:  20 May 2016

Chenyang Cai ,
Andrew E. Z. Short  and
Diying Huang
Chenyang Cai
Affiliation:
State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, 39 East Beijing Road, Nanjing 210008, China,
Andrew E. Z. Short
Affiliation:
Department of Ecology & Evolutionary Biology and Division of Entomology, Biodiversity Institute, University of Kansas, 1501 Crestline Drive Suite 140, Lawrence, Kansas 66045, USA
Diying Huang
Affiliation:
State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, 39 East Beijing Road, Nanjing 210008, China,
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Abstract

The first skiff beetle fossil and earliest myxophagan, Hydroscapha jeholensis n. sp., is described and illustrated on the basis of a single specimen from the Lower Cretaceous Yixian Formation at Huangbanjigou of Beipiao City, Liaoning Province, Northeastern China. Based on the combination of diagnostic characters of this specimen (e.g., minute and fusiform body, short elytra, tapered abdomen, separated meso- and metacoxae, and 3-segmented tarsi), we suggest that it is a definitive representative of Hydroscaphidae belonging to the widespread hydroscaphid genus Hydroscapha LeConte, 1874. It also represents the only impression fossil of the beetle suborder Myxophaga. This find displays great significance for shedding light on the preservation of the minute aquatic beetles, since it is the first well-preserved impression fossil reported for the suborder, rather than amber inclusion.

Type
Research Article
Information
Journal of Paleontology , Volume 86 , Issue 1 , January 2012 , pp. 116 - 119
Copyright
Copyright © The Paleontological Society 

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