A new sawfly of Megalodontesidae (Insecta, Hymenoptera, Pamphilioidea) with pectinate antennae from the Early Cretaceous of China

Abstract. A new sawfly of Megalodontesidae, Jibaissodes peichenaesp. nov., is described from the Lower Cretaceous Yixian Formation of Northeastern China. It is established mainly based on the pectinate antenna comprising 42 flagellomeres and the proximal 28 bearing apical rami, which gradually short...

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Autores principales: Wang, Yimo, Wang, Mei, Shih, Chungkun, Rasnitsyn, Alexandr P., Yao, Jun, Ren, Dong, Gao, Taiping
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Pensoft Publishers 2019
Materias:
Research Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6901609/
https://www.ncbi.nlm.nih.gov/pubmed/31844402
http://dx.doi.org/10.3897/zookeys.893.38512
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author Wang, Yimo
Wang, Mei
Shih, Chungkun
Rasnitsyn, Alexandr P.
Yao, Jun
Ren, Dong
Gao, Taiping
author_facet Wang, Yimo
Wang, Mei
Shih, Chungkun
Rasnitsyn, Alexandr P.
Yao, Jun
Ren, Dong
Gao, Taiping
author_sort Wang, Yimo
collection PubMed
description Abstract. A new sawfly of Megalodontesidae, Jibaissodes peichenaesp. nov., is described from the Lower Cretaceous Yixian Formation of Northeastern China. It is established mainly based on the pectinate antenna comprising 42 flagellomeres and the proximal 28 bearing apical rami, which gradually shorten in length toward the apex of the flagellum. The pterostigma of the forewing is infuscated apically and on the hind wing, vein 1-Rs is nearly equal to 1r-m and slightly shorter than 1-M. The first tergum is widely excised posteriorly and roundly protruding laterally alike in Megalodontes. This find supports that pectinate antennae in extant sawflies of Megalodontesidae originated at least during or before the Early Cretaceous.
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spelling pubmed-69016092019-12-16 A new sawfly of Megalodontesidae (Insecta, Hymenoptera, Pamphilioidea) with pectinate antennae from the Early Cretaceous of China Wang, Yimo Wang, Mei Shih, Chungkun Rasnitsyn, Alexandr P. Yao, Jun Ren, Dong Gao, Taiping Zookeys Research Article Abstract. A new sawfly of Megalodontesidae, Jibaissodes peichenaesp. nov., is described from the Lower Cretaceous Yixian Formation of Northeastern China. It is established mainly based on the pectinate antenna comprising 42 flagellomeres and the proximal 28 bearing apical rami, which gradually shorten in length toward the apex of the flagellum. The pterostigma of the forewing is infuscated apically and on the hind wing, vein 1-Rs is nearly equal to 1r-m and slightly shorter than 1-M. The first tergum is widely excised posteriorly and roundly protruding laterally alike in Megalodontes. This find supports that pectinate antennae in extant sawflies of Megalodontesidae originated at least during or before the Early Cretaceous. Pensoft Publishers 2019-12-02 /pmc/articles/PMC6901609/ /pubmed/31844402 http://dx.doi.org/10.3897/zookeys.893.38512 Text en Yimo Wang, Mei Wang, ChungKun Shih, Alexandr P. Rasnitsyn, Jun Yao, Dong Ren, Taiping Gao http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Wang, Yimo
Wang, Mei
Shih, Chungkun
Rasnitsyn, Alexandr P.
Yao, Jun
Ren, Dong
Gao, Taiping
A new sawfly of Megalodontesidae (Insecta, Hymenoptera, Pamphilioidea) with pectinate antennae from the Early Cretaceous of China
title A new sawfly of Megalodontesidae (Insecta, Hymenoptera, Pamphilioidea) with pectinate antennae from the Early Cretaceous of China
title_full A new sawfly of Megalodontesidae (Insecta, Hymenoptera, Pamphilioidea) with pectinate antennae from the Early Cretaceous of China
title_fullStr A new sawfly of Megalodontesidae (Insecta, Hymenoptera, Pamphilioidea) with pectinate antennae from the Early Cretaceous of China
title_full_unstemmed A new sawfly of Megalodontesidae (Insecta, Hymenoptera, Pamphilioidea) with pectinate antennae from the Early Cretaceous of China
title_short A new sawfly of Megalodontesidae (Insecta, Hymenoptera, Pamphilioidea) with pectinate antennae from the Early Cretaceous of China
title_sort new sawfly of megalodontesidae (insecta, hymenoptera, pamphilioidea) with pectinate antennae from the early cretaceous of china
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6901609/
https://www.ncbi.nlm.nih.gov/pubmed/31844402
http://dx.doi.org/10.3897/zookeys.893.38512
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