Segestria nekhaevae, Fomichev & Marusik, 2020

Fomichev, Alexander A. & Marusik, Yuri M., 2020, Notes on the spider genus Segestria Latreille, 1804 (Araneae: Segestriidae) in the East Palaearctic with description of three new species, Zootaxa 4758 (2), pp. 330-346 : 334-336

Segestria nekhaevae sp. n.

Figs 3E , 4E , 8C, F , I–J, 11A–C, 12B.

Segestria bavarica: Spassky & Luppova 1945: 44 ; Andreeva 1976: 17 (faunistic records, misidentifications).

Types. TAJIKISTAN: Khatlon Province: holotype ♀ ( ZMUT) and paratypes 3♀ ( ZMUT) Hissar Mt. Range, Ramit Reserve , 38°44.605’N, 69°18.486’E, 1324 m, 1.05.2015 ( YM) .

Etymology. The specific name is a matronym in honor of our colleague Anna A. Nekhaeva (Moscow, Russia).

Diagnosis. The new species is most similar to S. turkestanica and S. shtoppelae sp. n. but can be distinguished from them by much more pronounced pillar-shaped glands on walls of the ventral lobe of the anterior “receptacle” (cf. Figs 8 I–J and 8H, 9H).

Description. Female (holotype). Total length 12.0. Carapace: 4.2 long, 2.7 wide. Leg measurements as in Table 5. Coloration. Carapace brown, darker anteriorly. Chelicerae and labium dark brown. Maxillae brown. Sternum brown with yellow herringbone pattern. Palps brown. Legs: Fe, Pt of legs I and II light-yellow, Ti–Ta brown; leg I darker. Legs III and IV light-yellow. Abdomen and spinnerets beige. Abdomen covered with dark gray speckles; dorsum with pattern formed by 2 rows of dark-gray spots and venter with 2 dark gray longitudinal stripes ( Figs 3E , 4E ). Leg spination as in Table 6.

Endogyne ( Figs 8C, F , I–J, 11A–C): dorsal lobe of the anterior “receptacle” S-shaped, tip thinner then rest of the “receptacle”, pillar-shaped glands well developed; ventral lobe of receptacle square, about twice as wide as dorsal lobe.

Male unknown.

Size variations. Females: body length 8.6–12.0, carapace 3.2–4.2 long and 2.05–2.7 wide (n=4).

Distribution. Known only from the type locality.

Biology. The new species was collected from crevices in rock and clay cliffs.

Comments. Dunin (1986) suggested that Segestria specimens reported from the Ghissar Mt. Range and neighboring Fergana Valley in the western Tajikistan as S. bavarica C. L. Koch, 1843 ( Andreeva 1975, 1976; Spassky & Luppova 1945) belonged to S. turkestanica . However, all these records are based on juvenile specimens and are not verifiable. A juvenile specimen from the Ghissar Mt. Range was collected about 40 km from the type locality of S. nekhaevae sp. n. and perhaps belongs to this new species.

Figures

FIGURE 3. Dorsal habitus of the females of Segestria fengi sp. n. (A), S. shtoppelae sp. n. (B), Segestria sp. from India (C), S. turkestanica (D) and S. nekhaevae sp. n. (E). Scale bars: A, C=1 mm, B, D–E=2 mm.

FIGURE 4. Habitus of the females of Segestria fengi sp. n. (A), Segestria sp. from India (B, F), S. shtoppelae sp. n. (C), S. turkestanica (D) and S. nekhaevae sp. n. (E). A–E ventral; F lateral. Scale bars: A–C, E–F=1 mm, D=2 mm.

FIGURE 8. Endogyne of S. fengi sp. n. (A), S. shtoppelae sp. n. (B, D), S. nekhaevae sp. n. (C, F, I–J) and S. turkestanica (E, G–H). A, C, H, I, ventral; B, D–G, dorsal; J, lateral. Scale bars: B–C=0.2 mm. Abbreviations: Dl dorsal lobe of the anterior “receptacle”, Gp genital plate, Pg glands of the posterior “receptacle”, Pi pillar-shaped glands, Vl ventral lobe of the anterior “receptacle”.