Acantholycosa vahterae Fomichev & Marusik 2018, sp. n.

• Main Authors: Fomichev, Alexander A., Marusik, Yuri M.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2018
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Arachnida; Araneae; Lycosidae; Acantholycosa; Acantholycosa vahterae; The Arch; Tundra
• Online Access: https://zenodo.org/record/5978167; https://doi.org/10.5281/zenodo.5978167

Acantholycosa vahterae sp. n. Figs 1a‒d, 2a‒e, 3a‒c, 4a‒c, 5a‒c, 6a‒c, 9a, 10 Types. Holotype ♂ (ZMMU) MONGOLIA, Govi-Altai Aimag, Cakhir-Khaalgyn-Nuruu Mt. Range, 2‒5 km SSE from Dotiyn-Davaa Mt. Pass (45°25'N, 97°05'E ‒ 45°24'N, 97°07'E), mountain stony tundra with screes and rocks, 3300‒3660 m, 4.07.2017 (A.A. Fomichev) Paratypes: 2♂ 3♀ (ISEA), 1♂ 4♀ (ZMMU) together with the holotype. Etymology. The specific name is a patronym in honor of our colleague, Varpu Vahtera (Zoological Museum, University of Turku, Finland), an expert in centipedes. Diagnosis. Acantholycosa vahterae sp. n. is most similar to A. katunensis Marusik, Azarkina & Koponen, 2004 in having the almost identical shape of the paleal apophysis (Pa), the widened embolic tip, the tegular apophysis lacking an apical arm, the epigynal septum with parallel margins and not widened posteriorly. The new species readily differs from the related species in having a large triangle-shaped spine (Es) at the embolic base (Figs 2b, 4b), which is absent from A. katunensis. The female of the new species has the arch-shaped anterior pocket not subdivided into 2 parts and receptacles not reaching the anterior margin of fovea (Figs 6a‒c vs. the anterior pocket being clearly subdivided into 2 parts, receptacles long, reaching the anterior margin of fovea in A. katunensis; cf. figs. 82-83 in Marusik et al. 2004). A. vahterae sp. n. differs from A. kronestedti sp. n., another species occurring in Govi-Altai Aimag, in having the paleal apophysis with a triangular anterior outgrowth, no small spine (Ss) on the anterior embolic margin and the shorter posterior arm of tegular apophysis (cf. Figs 2a‒e and 2 f‒j). The females of the two species occurring in Govi-Altai Aimag can be distinguished by the shape and size of septal lobes (Sl), which are longer than wide in A. vahterae sp. n. and almost triangular in A. kronestedti sp. n. (cf. Figs 6a‒c and 6d‒f) and by direction of receptacles (Re), which directed inwardly in A. vahterae sp. n. and outwardly in A. kronestedti ...