Two new spider families from Late Cretaceous Kachin amber (Arachnida: Araneae)

Tongyao Jiang; Yafei Xin; Zhiyuan Yao; Shuqiang Li

doi:10.11865/zs.202033

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Zoological Systematics ›› 2020, Vol. 45 ›› Issue (4) : 266-280. DOI: 10.11865/zs.202033

Original Paper

Two new spider families from Late Cretaceous Kachin amber (Arachnida: Araneae)

Tongyao Jiang, Yafei Xin, Zhiyuan Yao, Shuqiang Li

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Abstract

Two new spider families from Late Cretaceous Kachin amber (Myanmar), ?Pilosarachnidae Jiang & Li, fam. nov. and ?Gigarachnidae Jiang & Li, fam. nov., are described: Pilosarachne ju Jiang & Li, gen. & sp. nov. and Gigarachne bian Jiang & Li, gen. & sp. nov. Type specimens are deposited in the Institute of Zoology, Chinese Academy of Sciences in Beijing (IZCAS). Both families bear three tarsal claws and are most likely entelegyne. Diagnostic characters of extinct families in Kachin amber with uncertain relationships with extant fauna are listed and discussed.

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Tongyao Jiang, Yafei Xin, Zhiyuan Yao, Shuqiang Li. Two new spider families from Late Cretaceous Kachin amber (Arachnida: Araneae)[J]. Zoological Systematics. 2020, 45(4): 266-280 https://doi.org/10.11865/zs.202033

Funding

This study was supported by the National Natural Science Foundation of China (31530067) and the Southeast Asia Biodiversity Research Institute, Chinese Academy of Sciences (2015CASEABRI005, Y4ZK111B01).