Sibirocosa nadolnyi, Omelko, Mikhail M. & Marusik, Yuri M., 2013

Omelko, Mikhail M. & Marusik, Yuri M., 2013, A survey of East Palaearctic Lycosidae (Araneae). 9. A review of Sibirocosa with a description of three new species, Zootaxa 3666 (3), pp. 319-330 : 325-328

Sibirocosa nadolnyi sp. n.

Figs 14 , 39–44

Sibirocosa sibirica: Trilikauskas 2008: 192 (misidentification).

Types. Holotype 3 (ZMMU) from Russia, Khabarovsk Province, environs of Chegdomyn Village, scree, south slope, 0 1.05.2001 (L. Trilikauskas).

Etymology. The specific name is a patronym in honour of our friend and colleague Anton A. Nadolny (Simferopol, Ukraine) who studies Lycosidae .

Diagnosis. The new species is most similar to S. sibirica from which it can be distinguished by the tapering tip of the embolus ( Figs 43, 44 ), thinner conductor (cf. Figs 18 , 40, 41 ) and the almost rectangular shape of the conductor in posterior view ( Fig. 42 ).

Description. Male. Total length 6.3, carapace 3.25 long, 2.55 wide. Carapace brown without pattern with black area around eyes. Legs brown with annulations. Femur I with 3 dorsal, 2 pro- and 2 retrolateral spines; patella with 2 dorsal, 1 pro- and 1 retrolateral spines; tibia with 2 dorsal, 1 pro-, 1 retrolateral and 5 pairs of ventral spines; metatarsus with 2 pro-, 2 retrolateral and 2 pairs of ventral spines. Leg I segments length: 2.55+1.15+2.7+2.35+1.3. Abdomen brownish grey with indistinct cardiac mark and white spots. Palp as in Figs 14 , 39-44 .

Distribution. The new species is known from the type locality only ( Fig. 64 ).

Sibirocosa sibirica (Kulczy ń ski, 1908) Figs 18, 24 , 30, 36 , 55–56

Lycosa sibirica Kulczyński, 1908: 89 , pl. 3, fig. 103–104, 106–107 (3). Pardosa sibirica: Zyuzin 1979: 435 , fig. 55 (3).

Sibirocosa sibirica: Marusik et al. 2004: 140 , figs 235–241, 251–253, 262 (3); Marusik & Kovblyuk 2011: 185, fig. 22.14 (Ƥ).

Comments. The species is described in an earlier paper. Sibirocosa sibirica has the largest range within the genus and is known from the Putorana Plateau to eastern Yakutia and from Lena River delta to northern Transbaikalia. In Northeastern Siberia it is replaced by S. kolymensis in the taiga zone and by S. subsolana in the tundra zone.

Sibirocosa subsolana (Kulczy ń ski, 1907) Figs 8 , 19, 25 , 31, 37 , 52–54

Lycosa subsolana Kulczyński, 1907: 592 , pl 21, fig. 26 (Ƥ).

Pardosa subsolana: Holm 1970: 205 , fig. 38 (Ƥ); Zyuzin 1979: 435, fig. 33 (Ƥ). Sibirocosa subsolana: Marusik et al. 2004: 142 , figs 228–230, 242–245, 257–258, 263.

Material examined. RUSSIA, Chukotka: 63 2Ƥ (ZMMU), Palyavaam R. valley, 68°30’N 171°E, 16.06.2011 (D.I.Berman); 253 14Ƥ (ZMMU), environs of Pevek, 69.656°N 170.206°E, Summer 2011 (O.A.Khrulyova); 1Ƥ (ZMMU), South Chukotka, 40 km SSW of Beringovski Vill., 62°43.275'N, 178°55.8'E, 5.07-1.08.2012 (A. Stekolshchikov).

Comments. The species is described in an earlier paper. Sibiricosa subsolana has the northernmost range in the genus, occurring from the Kolyma River mouth to the eastern edge of the Chukotka Peninsula and north to Wrangel Island (ca 71°N) (Marusik et al. 1992). It is possible that the species might also be found in the adjacent Seward Peninsula of Alaska (Marusik et al. 2004).

Figures

FIGURE 64. Distribution of Siberia and Far Eastern species of Sibirocosa: S. kolymensis (), S. koponeni sp. n. (), S. manchurica (), S. nadolnyi sp. n. (), S. sibirica (), S. subsolana () and S. trilikauskasi sp. n. ().

FIGURES 8 – 14. Male palps of Sibirocosa species. Sibirocosa subsolana (8), S. manchurica (9), S. koponeni sp. n. (10), S. trilikauskasi sp. n. (11 – 13) and S. nadolnyi sp. n. (14). 8 – 10, 13 – 14 — ventral; 11 – 12 — tegulum and tegular apophysis, anterior and ventral. Scale = 0.2 mm.

FIGURES 39 – 44. Male palp of Sibirocosa nadolnyi sp. n. 39 — bulbus, ventral; 40 – 41 — embolic division, ventral, different aspects; 42 — embolic division, posterior; 43 — embolic division, retrolateral; 44 — embolic division, anterior. Scale = 0.2 mm.

FIGURES 15 – 26. Embolic division of Sibirocosa species. Sibirocosa kolymensis (15, 21), S. koponeni sp. n. (16, 22), S. manchurica (17, 23), S. sibirica (18, 24), S. subsolana (19, 25) and S. trilikauskasi sp. n. (20, 26). 15 – 20 — ventral; 21 – 26 — anterior. 15, 18, 21, 24 after Marusik et al. (2004). Scale = 0.2 mm. Abbreviations: Co conductor, Em embolus, Pa palea, Ta terminal apophysis.

FIGURES 27 – 38. Embolic division of Sibirocosa species. Sibirocosa kolymensis (27, 33), S. koponeni sp. n. (28, 34), S. manchurica (29, 35), S. sibirica (30, 36), S. subsolana (31, 37) and S. trilikauskasi sp. n. (32, 38). 27 – 32 — retrolateral; 33 – 38 — posterior. 27, 30, 33, 36 after Marusik et al. (2004). Scale = 0.2 mm. Abbreviations: Co conductor, Em embolus, Pa palea, Ta terminal apophysis.

FIGURES 45 – 59. Epigynes of Sibirocosa species. Sibirocosa koponeni sp. n. (45 – 47), S. kolymensis (48 – 49), S. manchurica (50 – 51), S. subsolana (52 – 54), S. sibirica (55 – 56) and S. trilikauskasi (57 – 59). 45 – 46, 48, 50, 52, 55, 57 – 58 — ventral; 47, 49, 51, 54, 56, 59 — dorsal. 49, 51, 56 after Marusik et al. (2004). Scale = 0.2 mm. Abbreviations: Ap apical pocket, Ff floor of fovea, Fo fovea, Re receptacle.