Stegodyphus lineatus (Latreille)

Miller, Jeremy A., Griswold, Charles E., Scharff, Nikolaj, Řezac, Milan, Szűts, Tamas & Marhabaie, Mohammad, 2012, The velvet spiders: an atlas of the Eresidae (Arachnida, Araneae), ZooKeys 195, pp. 1-144 : 83-85

Stegodyphus lineatus (Latreille) Figs 3 A–C4K11A–D15D–F 18G, J79-83

Eresus lineatus Latreille, 1817: 393.

Eresus acanthophilus Dufour, 1820: 302, pl. 95, figs 3-4 (not seen); Walckenaer 1837: 399, pl. 11, fig. 1. Synonymy in Simon 1873: 337.

Eresus unifasciatus C. L. Koch, 1846: 5, fig. 1081. Synonymy in Simon 1873: 337.

Eresus fuscifrons C. L. Koch, 1846: 9, fig. 1084 (see Platnick 2011). Synonymy in Simon 1873: 337.

Eresus lituratus C. L. Koch, 1846: 11, fig. 1085. Synonymy in Simon 1873: 337.

Stegodyphus lineatus (Latreille, 1817). Simon 1873: 337; 1892: 253, fig. 208; 1910: 286, fig. 4A; Pavesi 1876: 443; Bacelar 1929: 252, figs 6-7; Nenilin and Pestova 1986: 1734, figs 5, 6, 8; Kraus and Kraus 1988: 231, figs 1-2, 28, 202-205, 227-228, 234-242; Ergashev 1990: 44, figs 17-23; Melic 1995: 11, figs 11-16; El-Hennawy 2009: 130, figs 3-4, 9, 11; Le Peru 2011: 321, fig. 562.

Eresus arenarius Kroneberg 1875: 44, pl. 5, fig. 32 (not seen). Synonymy in Nenilin and Pestova 1986: 1734.

Stegodyphus lineatus deserticola Simon 1908: 79; 1910: 287. Synonymy in Kraus and Kraus 1988: 232.

Stegodyphus quadriculatus Franganillo 1925: 38; 1926: 75. Synonymy in Kraus and Kraus 1988: 232.

Description.

Male (Nengrahar, Afghanistan, MR010, MR): Carapace with numerous white setae, cephalic region subtriangular, longer than wide, strongly raised; AME nearly as large as PME (AME/PME 0.88), median eyes separated on horizontal axis, largely overlapping on vertical axis; ALE on small tubercles; PER much narrower than AER (PER/AER 0.62), PLE position on carapace 0.24; clypeal hood forms acute angle; fovea shallow. Chelicerae with lateral boss, excavated mesally. Legs with numerous white setae; leg I distinctly thickened and elongated (contra Kraus and Kraus 1988: 232), without thick brush of setae; with distal ventral macrosetae on tibia I–IV, row of distal ventral macrosetae on metatarsus I–IV plus scattered ventral macrosetae on metatarsus and tarsus I–IV. Abdomen with numerous white setae (Figs 11A, B, 79 A–D).

Male palp with proximal-distal axis; tegulum subtrapezoidal; conductor and embolus together form apical complex making one helical turn; conductor with more or less membranous and papilliated inner layer extending beyond moderately sclerotized outer layer; tegular division slightly longer than embolic division; cymbium with several prolateral macrosetae (Figs 15 D–F, 79I, J, 80 A–D).

Female (Belkis, Turkey, MR015, MR): Carapace with numerous white setae, cephalic region subtriangular, longer than wide, moderately raised; AME nearly as large as PME (AME/PME 0.87), median eyes separated on horizontal axis, largely overlapping on vertical axis; ALE on small tubercles; PER much narrower than AER (PER/AER 0.68), PLE position on carapace 0.21; clypeal hood forms acute angle; fovea shallow. Chelicerae contiguous mesally, with lateral boss. Legs with numerous white setae, with pair of distal ventral macrosetae on tibia I–IV and row of distal ventral macrosetae on metatarsus I–IV plus scattered ventral macrosetae on metatarsus and tarsus I–IV. Abdomen with numerous white setae (Figs 11C, D, 79 E–H, 81 A–F).

Epigynum with converging slit-like atria occupying nearly the total length, anteriomedian part with weak notch-shaped invagination, anteriolateral margin a strong curved ridge (Figs 18G, 82A). Vulva with spermathecal heads on thick sinuous stalks leading to multilobed spermathecae posteriorly (Figs 18J, 82 B–D).

Spinneret spigot morphology.

Our preparations are collapsed, obscuring the spigots of the posterior spinnerets, especially of the female. We are nevertheless able to make some provisional comments about the spigots. Female ALS with 5 MAP within and on inner edge of spinning field of more than 60 PI (Fig. 83E); male with at least 2 MAP within PI field; MAP shafts nearly smooth (Fig. 83B). Male PMS with 2 median mAP spigots flanked by a large anterior mAP tartipore (with shafts scaly as in other eresids), with 11 AC scattered anterior and posterior of mAP (Fig. 83C); female PMS spinning surface nearly hidden, but there a ppears to be numerous spigots, more than in male, so it is possible that, as in other eresids, both AC and CY are present. Male PLS with at least 13 AC (Fig. 83D); the base of the male PLS and most of the female PLS are not visible, so we cannot confirm the presence of a MS or flanking spigots. Male cribellar plate with no sign of spigots; numerous epiandrous gland spigots present (Fig. 80E, F).