Another Laurasian connection in the Early Eocene of India: Myrmecarchaea spiders (Araneae, Archaeidae)

The first fossil Archaeidae in Cambay amber from India, of Eocene age, is documented. The inclusion is a spider exuvium and is placed as Myrmecarchaea based on the presence of elongated legs, a slightly elongated pedicel with lateral spurs, and a diastema between coxae III and IV that is similar to...

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Autores principales:	Hannah M. Wood, Hukam Singh, David A. Grimaldi
Formato:	article
Lenguaje:	EN
Publicado:	Pensoft Publishers 2021
Materias:	Zoology QL1-991
Acceso en línea:	https://doaj.org/article/2feef079dff747408dca4592a5453420
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spelling	oai:doaj.org-article:2feef079dff747408dca4592a54534202021-11-19T04:30:12ZAnother Laurasian connection in the Early Eocene of India: Myrmecarchaea spiders (Araneae, Archaeidae)10.3897/zookeys.1071.725151313-2970https://doaj.org/article/2feef079dff747408dca4592a54534202021-11-01T00:00:00Zhttps://zookeys.pensoft.net/article/72515/download/pdf/https://zookeys.pensoft.net/article/72515/download/xml/https://zookeys.pensoft.net/article/72515/https://doaj.org/toc/1313-2970The first fossil Archaeidae in Cambay amber from India, of Eocene age, is documented. The inclusion is a spider exuvium and is placed as Myrmecarchaea based on the presence of elongated legs, a slightly elongated pedicel with lateral spurs, and a diastema between coxae III and IV that is similar to M. antecessor from Oise amber. The previous occurrences of the genus are from Baltic and Oise amber, both of Eocene age. Because most spiders, including Archaeidae, only molt as juveniles, the exuvium does not have adult features nor have distinct species-specific features, and a new taxon is not erected. This new record further extends the distribution of the family and genus to India 50–52 million years ago. Myrmecarchaea in Indian Cambay amber provides additional evidence that India in the Early Eocene had affinities with the Palearctic mainland rather than showing Gondwanan insularity.Hannah M. WoodHukam SinghDavid A. GrimaldiPensoft PublishersarticleZoologyQL1-991ENZooKeys, Vol 1071, Iss , Pp 49-61 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Zoology QL1-991
spellingShingle	Zoology QL1-991 Hannah M. Wood Hukam Singh David A. Grimaldi Another Laurasian connection in the Early Eocene of India: Myrmecarchaea spiders (Araneae, Archaeidae)
description	The first fossil Archaeidae in Cambay amber from India, of Eocene age, is documented. The inclusion is a spider exuvium and is placed as Myrmecarchaea based on the presence of elongated legs, a slightly elongated pedicel with lateral spurs, and a diastema between coxae III and IV that is similar to M. antecessor from Oise amber. The previous occurrences of the genus are from Baltic and Oise amber, both of Eocene age. Because most spiders, including Archaeidae, only molt as juveniles, the exuvium does not have adult features nor have distinct species-specific features, and a new taxon is not erected. This new record further extends the distribution of the family and genus to India 50–52 million years ago. Myrmecarchaea in Indian Cambay amber provides additional evidence that India in the Early Eocene had affinities with the Palearctic mainland rather than showing Gondwanan insularity.
format	article
author	Hannah M. Wood Hukam Singh David A. Grimaldi
author_facet	Hannah M. Wood Hukam Singh David A. Grimaldi
author_sort	Hannah M. Wood
title	Another Laurasian connection in the Early Eocene of India: Myrmecarchaea spiders (Araneae, Archaeidae)
title_short	Another Laurasian connection in the Early Eocene of India: Myrmecarchaea spiders (Araneae, Archaeidae)
title_full	Another Laurasian connection in the Early Eocene of India: Myrmecarchaea spiders (Araneae, Archaeidae)
title_fullStr	Another Laurasian connection in the Early Eocene of India: Myrmecarchaea spiders (Araneae, Archaeidae)
title_full_unstemmed	Another Laurasian connection in the Early Eocene of India: Myrmecarchaea spiders (Araneae, Archaeidae)
title_sort	another laurasian connection in the early eocene of india: myrmecarchaea spiders (araneae, archaeidae)
publisher	Pensoft Publishers
publishDate	2021
url	https://doaj.org/article/2feef079dff747408dca4592a5453420
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Another Laurasian connection in the Early Eocene of India: Myrmecarchaea spiders (Araneae, Archaeidae)

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