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Issue: Vol. 5723 No. 1: 24 Nov. 2025
Type: Article
Published: 2025-11-24
DOI: 10.11646/zootaxa.5723.1.5
Page range: 105-116
Abstract views: 27
PDF downloaded: 3

Julus bengeli sp. nov., a new millipede from the Altais, Siberia, Russia, showing strong sexual dimorphism in the gnathochilarium (Diplopoda: Julida: Julidae)

Altai State University; Institute of Biology and Biotechnology; Barnaul 656049; Russia
Tomsk State University; Biological Institute; Tomsk 634050; Russia; Altai State University; Institute of Biology and Biotechnology; Barnaul 656049; Russia
Myriapoda taxonomy fauna new species gnathochilarium sexual dimorphism Russian Altais

Abstract

Julus bengeli sp. nov. is described and illustrated from the Russian Altais, southwestern Siberia, Asian Russia. The new species shows a strong sexual dimorphism in the gnathochilarium in males, viz. a distinct projection located parabasally on the gnathochilarial stipes, apically carrying a circular bundle of 15–17 elongated papillae/trichomes. Julus bengeli sp. nov. seems to be especially close to J. ghilarovi Gulička, 1963, but differs from it by the presence of a conical apical outgrowth of the telopodite 1 of leg pair 1, and a large anterior coxal outgrowths of leg pair 2 thickened in the central part. The distributions of all Julus species of the Russian Altais are mapped, and a key to species of the genus in the study area is given.

 

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How to Cite

Nefediev, P.S. & Nefedieva, J.S. (2025) Julus bengeli sp. nov., a new millipede from the Altais, Siberia, Russia, showing strong sexual dimorphism in the gnathochilarium (Diplopoda: Julida: Julidae). Zootaxa, 5723 (1), 105–116. https://doi.org/10.11646/zootaxa.5723.1.5