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Issue: Vol. 4908 No. 4: 18 Jan. 2021
Type: Article
Published: 2021-01-18
DOI: 10.11646/zootaxa.4908.4.4
Page range: 505–514
Abstract views: 60
PDF downloaded: 59

A new fossil Stempellinella from Eocene Baltic amber, with systematic notes and amendment of the generic diagnosis (Diptera: Chironomidae)

University of Gdańsk, Faculty of Biology, Department of Invertebrate Zoology and Parasitology, Laboratory of Systematic Zoology, Wita Stwosza 59, 80-308 Gdańsk, Poland
University of Gdańsk, Faculty of Biology, Department of Invertebrate Zoology and Parasitology, Laboratory of Systematic Zoology, Wita Stwosza 59, 80-308 Gdańsk, Poland
Diptera Chironominae new species non-biting midges palaeoecology Tanytarsini taxonomy

Abstract

Stempellinella gilkai sp. nov., an Eocene non-biting midge of the subfamily Chironominae, tribe Tanytarsini is described on the basis of the adult male. This is the sixth fossil representative of the genus and the fifth described from Baltic amber (~40–45 Ma). The species displays a set of morphological characters typical of the genus. To facilitate a delimitation of fossil Stempellinella, a comparison of the most significant characters is provided. The key features of antenna and hypopygium are discussed in detail. A comparative analysis of both extinct and extant Stempellinella representatives allowed to perform an amendment of the current generic diagnosis. Notes on the genus’ palaeoecology and species richness during the Eocene are also included.

 

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