Examining ecological niche for six species of whip spider in Colombia

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  Examining ecological niche for six species of whip spider in Colombia  Abstract The conditioning variables for the establishment of Amblypygi populations and their ecological interactions are currently poorly studied. Delving deeper into this can help to conserve this group of short-range distribution species, which are useful as a model in biogeographic research. In this study, we evaluated the distribution and overlapping patterns of ecological niche in six species of amblypygids ( Phrynus araya , P. panche , P. pulchripes , Heterophrynus batesii , H. boterorum , H. cervinus ) in the Andean and Amazonian ecosystems of Colombia, revealing a clear biogeographic segregation driven by environmental gradients: Phrynus species were associated with inter-Andean valleys with high thermal and water seasonality.  While the Heterophrynus occupied more stable and humid conditions of foothills and middle elevations. Overlap analyses showed significant divergence (e.g., D=0.105 b...

First report of an ocular anomaly in Cyclosternum Ausserer, 1871 (Araneae: Theraphosidae) from Ecuador

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First report of an ocular anomaly in Cyclosternum Ausserer, 1871 (Araneae: Theraphosidae) from Ecuador

Abstract
We report for the first time an ocular anomaly in a spider of the genus Cyclosternum Ausserer, 1871 (Theraphosidae), housed in the wet collection of the invertebrate section of the Museo de Zoología, Pontificia Universidad Católica del Ecuador, Quito, Ecuador. 

Guallasamin, Diana. (2025). First report of an ocular anomaly in Cyclosternum Ausserer, 1871 (Araneae: Theraphosidae) from Ecuador. Revista Ibérica de Aracnología. 46. 131-132.