Volume 24, Issue 74, July - December, 2023

First record of Stenoterommata platensis (Araneae: Pycnothelidae) in Santiago del Estero, Argentina and niche modelling to unveil its distributional pattern

Fiorella Signorotto^1♦, Micaela Nicoletta², Nelson Ferretti^1,2

¹Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur, San Juan 670, Bahía Blanca (8000), Buenos Aires, Argentina
²Centro de Recursos Naturales Renovables de la Zona Semiárida (CERZOS-UNS, CONICET), Camino La Carrindanga, km.7, Bahía Blanca (8000), Buenos Aires, Argentina

^♦Corresponding author
Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur, San Juan 670, Bahía Blanca (8000), Buenos Aires, Argentina

ABSTRACT

Stenoterommata platensis is distributed in Argentina and Uruguay along the La Plata River basin, characterized by a predominantly humid climate and moist habitats. However, this contribution reports the presence of S. platensis outside its known distribution range, accompanied by an analysis of distribution models to assess the influence of bioclimatic variables on distribution patterns. This research confirms the current presence of S. platensis in the Santiago del Estero province, indicating a significant expansion of its geographic range and its ability to thrive in drier and high-temperature environments. Niche modeling under past conditions (~20000 years ago) indicated suitable areas for the establishing of this species in the Dry Chaco.

Keywords: Mygalomorphae, range expansion, species distribution model, Maxent

Species, 2023, 24(74), e89s1606

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DOI: https://doi.org/10.54905/disssi.v24i74.e89s1606

Published: 02 December 2023