The presence of the Dinaric genus Mesostalita Deeleman-Reinhold, 1971 (Arachnida: Araneae: Dysderidae) in the Julian Prealps (NE Italy)
Prisotnost pajka dinarske vrste rodu Mesostalita (Deeleman-Reinhold, 1971) (Arachnida: Araneae: Dysderidae) v Beneških Predalpah (SV Italija)

english

2025

volume 54, issue 1

cave-dwelling spiders   Julian Prealps   new record

ZRC SAZU
(Obvezni izvod spletne publikacije)

Mesostalita is a genus of woodlouse hunter spiders (Arach-nida: Araneae: Dysderidae), currently including three species: M. nocturna, M. kratochvili, and M. comottii. These are cave-dwelling species, endemic to the Dinarides. The genus distribution range is examined, focusing on published localities. In particular, the presence of Mesostalita in the Julian Prealps (NE Italy) is investigated by researching previous reports from the area. A new record, Foran di Landri cave, is reported, representing the fourth known occurrence of the genus in the area. A brief description and some photographs of the female specimen found in the cave are provided. Following this finding, the genus distribution range must be extended northwards to include the Julian Prealps, on the other side of the Isonzo-Soča river (representing a biogeographical barrier for many cave-dwellers), opposite to the Dinarides. This makes Mesostalitaone of the few troglobitic north-western Dinaric genera living on both sides of the river. Further sampling in caves in the area (to find at least a male individual) and molecular analyses are necessary to clarify the proper, specific status of specimens living in the Julian Prealps and their phylogenetic relationships within the genus.

16.01.2026