The first larval record of Migadopinae (Coleoptera: Adephaga: Carabidae) from mid-Cretaceous Kachin amber, northern Myanmar
A new genus and species of Carabidae (Coleoptera: Adephaga), Cretomigadops bidentatus gen. et sp. nov., is described based on a well-preserved specimen from mid-Cretaceous Kachin amber from northern Myanmar. It is a first instar shortly after hatching, with distinct, elongate frontal eggbursters and...
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ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
2023
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Online Access: | http://ir.nigpas.ac.cn/handle/332004/41578 https://doi.org/10.1016/j.cretres.2022.105413 |
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ftchinacscnigpas:oai:ir.nigpas.ac.cn:332004/41578 2023-05-15T13:45:33+02:00 The first larval record of Migadopinae (Coleoptera: Adephaga: Carabidae) from mid-Cretaceous Kachin amber, northern Myanmar Liu, Hua Beutel, Rolf G. V. Makarov, Kirill Jarzembowski, Edmund A. Xiao, Chuantao Luo, Cihang 2023-02-01 http://ir.nigpas.ac.cn/handle/332004/41578 https://doi.org/10.1016/j.cretres.2022.105413 英语 eng ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD CRETACEOUS RESEARCH http://ir.nigpas.ac.cn/handle/332004/41578 doi:10.1016/j.cretres.2022.105413 Coleoptera Carabidae Migadopinae Mid-Cretaceous Myanmar New species SYSTEMATIC POSITION INSECTA COLEOPTERA RHYSODIDAE CHARACTERS PHYLOGENY SYNOPSIS Geology Paleontology 期刊论文 2023 ftchinacscnigpas https://doi.org/10.1016/j.cretres.2022.105413 2023-02-17T01:15:25Z A new genus and species of Carabidae (Coleoptera: Adephaga), Cretomigadops bidentatus gen. et sp. nov., is described based on a well-preserved specimen from mid-Cretaceous Kachin amber from northern Myanmar. It is a first instar shortly after hatching, with distinct, elongate frontal eggbursters and a disproportionally large head. Cretomigadops bidentatus gen. et sp. nov. displays typical adephagan fea -tures and is classified as a larva of Carabidae based on a strongly sinuate frontal suture. It is assigned to Migadopinae based on characters of the head, especially the presence of two acute subapical mandibular teeth. It differs from other known genera of this small subantarctic subfamily by its long urogomphus, elongate legs with equal pretarsal claws and a long abdominal segment X. It is the first definite Mesozoic larval record of Carabidae from amber. Differences between C. bidentatus gen. et sp. nov. and four other fossil caraboid larvae are also discussed. The mandibles with a falcate apical tooth and two additional sharp subapical teeth indicate that C. bidentatus gen. et sp. nov. was a specialized active predator and good at grasping and piercing small arthropods. The elongate and articulated urogomphi, the long legs, the well-developed stemmata and the pigmented cuticle indicate that the larva was a surface runner, moving mostly on the soil surface and hunting more or less fast-moving prey. In contrast to the sub-antarctic distribution of Migadopinae, C. bidentatus gen. et sp. nov. preserved in Burmite shows that the distribution range of the subfamily was wider in the Mesozoic.(c) 2022 Elsevier Ltd. All rights reserved. Report Antarc* Antarctic Nanjing Institute of Geology and Palaeontology: NIGPAS OpenIR (Chinese Academy of Sciences) Antarctic Cretaceous Research 142 105413 |
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Open Polar |
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Nanjing Institute of Geology and Palaeontology: NIGPAS OpenIR (Chinese Academy of Sciences) |
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ftchinacscnigpas |
language |
English |
topic |
Coleoptera Carabidae Migadopinae Mid-Cretaceous Myanmar New species SYSTEMATIC POSITION INSECTA COLEOPTERA RHYSODIDAE CHARACTERS PHYLOGENY SYNOPSIS Geology Paleontology |
spellingShingle |
Coleoptera Carabidae Migadopinae Mid-Cretaceous Myanmar New species SYSTEMATIC POSITION INSECTA COLEOPTERA RHYSODIDAE CHARACTERS PHYLOGENY SYNOPSIS Geology Paleontology Liu, Hua Beutel, Rolf G. V. Makarov, Kirill Jarzembowski, Edmund A. Xiao, Chuantao Luo, Cihang The first larval record of Migadopinae (Coleoptera: Adephaga: Carabidae) from mid-Cretaceous Kachin amber, northern Myanmar |
topic_facet |
Coleoptera Carabidae Migadopinae Mid-Cretaceous Myanmar New species SYSTEMATIC POSITION INSECTA COLEOPTERA RHYSODIDAE CHARACTERS PHYLOGENY SYNOPSIS Geology Paleontology |
description |
A new genus and species of Carabidae (Coleoptera: Adephaga), Cretomigadops bidentatus gen. et sp. nov., is described based on a well-preserved specimen from mid-Cretaceous Kachin amber from northern Myanmar. It is a first instar shortly after hatching, with distinct, elongate frontal eggbursters and a disproportionally large head. Cretomigadops bidentatus gen. et sp. nov. displays typical adephagan fea -tures and is classified as a larva of Carabidae based on a strongly sinuate frontal suture. It is assigned to Migadopinae based on characters of the head, especially the presence of two acute subapical mandibular teeth. It differs from other known genera of this small subantarctic subfamily by its long urogomphus, elongate legs with equal pretarsal claws and a long abdominal segment X. It is the first definite Mesozoic larval record of Carabidae from amber. Differences between C. bidentatus gen. et sp. nov. and four other fossil caraboid larvae are also discussed. The mandibles with a falcate apical tooth and two additional sharp subapical teeth indicate that C. bidentatus gen. et sp. nov. was a specialized active predator and good at grasping and piercing small arthropods. The elongate and articulated urogomphi, the long legs, the well-developed stemmata and the pigmented cuticle indicate that the larva was a surface runner, moving mostly on the soil surface and hunting more or less fast-moving prey. In contrast to the sub-antarctic distribution of Migadopinae, C. bidentatus gen. et sp. nov. preserved in Burmite shows that the distribution range of the subfamily was wider in the Mesozoic.(c) 2022 Elsevier Ltd. All rights reserved. |
format |
Report |
author |
Liu, Hua Beutel, Rolf G. V. Makarov, Kirill Jarzembowski, Edmund A. Xiao, Chuantao Luo, Cihang |
author_facet |
Liu, Hua Beutel, Rolf G. V. Makarov, Kirill Jarzembowski, Edmund A. Xiao, Chuantao Luo, Cihang |
author_sort |
Liu, Hua |
title |
The first larval record of Migadopinae (Coleoptera: Adephaga: Carabidae) from mid-Cretaceous Kachin amber, northern Myanmar |
title_short |
The first larval record of Migadopinae (Coleoptera: Adephaga: Carabidae) from mid-Cretaceous Kachin amber, northern Myanmar |
title_full |
The first larval record of Migadopinae (Coleoptera: Adephaga: Carabidae) from mid-Cretaceous Kachin amber, northern Myanmar |
title_fullStr |
The first larval record of Migadopinae (Coleoptera: Adephaga: Carabidae) from mid-Cretaceous Kachin amber, northern Myanmar |
title_full_unstemmed |
The first larval record of Migadopinae (Coleoptera: Adephaga: Carabidae) from mid-Cretaceous Kachin amber, northern Myanmar |
title_sort |
first larval record of migadopinae (coleoptera: adephaga: carabidae) from mid-cretaceous kachin amber, northern myanmar |
publisher |
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD |
publishDate |
2023 |
url |
http://ir.nigpas.ac.cn/handle/332004/41578 https://doi.org/10.1016/j.cretres.2022.105413 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
CRETACEOUS RESEARCH http://ir.nigpas.ac.cn/handle/332004/41578 doi:10.1016/j.cretres.2022.105413 |
op_doi |
https://doi.org/10.1016/j.cretres.2022.105413 |
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Cretaceous Research |
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142 |
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105413 |
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1766227297735540736 |