Soil Preference and Burrow Characteristics of Two Theraphosidae Species in Penang Island, Malaysia

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  Soil Preference and Burrow Characteristics of Two Theraphosidae Species in Penang Island, Malaysia Abstract Tarantulas play a crucial role in maintaining ecological balance by regulating insect populations. However, little is known about the soil preferences and burrow structures of tarantulas in Malaysia. This study aims to determine the soil preference as well as the burrow structure of  Coremiocnemis cunciularia  and  Chilobrachys andersoni  from Penang Island. The soil characteristics of the soil samples collected around the burrows of  Coremiocnemis cunciularia  (n = 30) and  Chilobrachys andersoni  (n = 30) were determined using soil texture analysis. The measurements and burrow structures from adults and juveniles of  Coremiocnemis cunciularia  and  Chilobrachys andersoni  were determined. It was revealed that the moisture content and clay percentage in the soil samples around burrows of  Chilobrachys anderso...

Nativus gen. nov., a new huntsman spider genus from South America (Araneae: Sparassidae: Heteropodinae)

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Nativus gen. nov., a new huntsman spider genus from South America (Araneae: Sparassidae: Heteropodinae)

Abstract

In this paper, the new genus, Nativus gen. nov. is proposed to include the type species, Nativus tupana sp. nov. (♂♀) from Brazil and nine new species: N. carare sp. nov. (♂), N. hazzii sp. nov. (♂♀), N. janai sp. nov. (♂), N. nocaima sp. nov. (♂♀), N. tawu sp. nov. (♂♀) and N. yurupari sp. nov. (♂♀) from Colombia, N. juruti sp. nov. (♂) and N. mariua sp. nov. (♂♀) from Brazil, and N. napo sp. nov. (♂♀) from Peru. The genus is placed in the subfamily Heteropodinae due to the presence of intermarginal denticles on the chelicerae, a long-toothed female palpal claw, two recurved eye rows with median eyes smaller than laterals, and only one lateral spine on each side of metatarsi I−II, as well as a ventral branch on the RTA (vRTA) in the male palp. Within Heteropodinae, it seems to be more closely related to Guadana Rheims and Sparianthina Banks due to the presence of intermarginal denticles along the entire cheliceral groove and a dorsal tegular apophysis (DTA) in the male palp. All species are described and illustrated. An identification key and distribution maps are provided for all species of the genus.

https://wsc.nmbe.ch/refincluded/17413 (PDF) World Spider Catalog

https://www.mapress.com/zt/article/view/zootaxa.5360.1.1