New insights into maternal care and juvenile dispersal in Pterinopelma roseum (Araneae: Theraphosidae)

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  New insights into maternal care and juvenile dispersal in Pterinopelma roseum (Araneae: Theraphosidae) Abstract Tarantulas (Theraphosidae) exhibit a wide diversity of reproductive behaviors, yet many aspects of their natural history, particularly those related to maternal care and juvenile dispersal, remain poorly known. Pterinopelma roseum is a species distributed in southern Brazil and northeastern Argentina for which information on reproductive biology is limited. The aim of this study was to document maternal care, egg sac composition, and juvenile dispersal through the monitoring of a female collected together with its egg sac in Misiones Province, Argentina. The female was maintained under controlled laboratory conditions and observed daily until juvenile dispersal. During the incubation period, the female actively protected the egg sac, remaining in contact with it most of the time and displaying defensive behaviors when disturbed, while continuing to feed regularly. The e...

Fourteen new species and notes on the genera Amauropelma Raven, Stumkat & Gray, 2001 and Bowie Jäger, 2022 (Arachnida: Araneae: Ctenidae) from Southeast Asia

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Fourteen new species and notes on the genera Amauropelma Raven, Stumkat & Gray, 2001 and Bowie Jäger, 2022 (Arachnida: Araneae: Ctenidae) from Southeast Asia

Abstract

Material of the spider family Ctenidae from Southeast Asia is investigated. Ten new species of the genus Amauropelma Raven, Stumkat & Gray, 2001 are described: A. grasshoffi sp. nov. (first record from the Philippines; male), A. kihit sp. nov. (Laos; female), A. kochang sp. nov. (Thailand; female), A. lombok sp. nov. (Indonesia; male, female), A. maimoun sp. nov. (Laos; female), A. phamom sp. nov. (Laos; female), A. penang sp. nov. (Malaysia; male), A. prangphe sp. nov. (Thailand; male, female), A. saiyok sp. nov. (Thailand; female) and A. thammim sp. nov. (Laos; male, female); the male of A. khanense Jäger & Nophaseud, 2024 is described for the first time. New records are listed for A. jagelkii Jäger, 2012 (Laos) and A. mariae Omelko & Fomichev, 2024a (Indonesia). Four new species of the genus Bowie Jäger, 2022 are described: B. kosulici sp. nov. (Thailand; male, female), B. soundandvision sp. nov. (Thailand; male, female) and B. weepingwall sp. nov. (Thailand; female) from the bemywife-group, and B. lehtineni sp. nov. (Sabah; female) from the chinagirl-group. Intraspecific variation is shown for the male of B. subterraneans Jäger, 2022, the female is described for the first time using topotypic material. The alleged record of B. neukoeln Jäger, 2022 from Sabah by Omelko and Fomichev (2024b) is considered a misidentification.

Jäger, P. (2026) Fourteen new species and notes on the genera Amauropelma Raven, Stumkat & Gray, 2001 and Bowie Jäger, 2022 (Arachnida: Araneae: Ctenidae) from Southeast Asia. Zootaxa, 5839 (3), 401–438. https://doi.org/10.11646/zootaxa.5839.3.1