Dysdera tapuria, Zamani & Marusik & Szűts, 2023

Zamani, Alireza, Marusik, Yuri M. & Szűts, Tamas, 2023, A survey of the spider genus Dysdera Latreille, 1804 (Araneae, Dysderidae) in Iran, with fourteen new species and notes on two fossil genera, ZooKeys 1146, pp. 43-86 : 43

Dysdera tapuria sp. nov.

Figs 29A-F , 30A-D , 31A-D

Type material.

Holotype ♂ (MMUE), Iran: Mazandaran Province: Tooban, Khorram-Abad, 36°43'N, 50°48'E, 8-10.06.2000 (Y.M. Marusik). Paratypes: 1♀ (MMUE), same data as the holotype; 1♂ (MHNG), Chorteh, 36°49'N, 50°38'E, 1300 m, 5.08.1974 (A. Senglet); 1♂ (MHNG), Chorteh, 36°49'N, 50°38'E, 1300 m, 8.07.1973 (A. Senglet).

Etymology.

The specific epithet is a noun in apposition, referring to the term applied to a mountainous region located in the Caspian coast of northern Iran.

Diagnosis.

The male of the new species is most similar to that of D. concinna , but differs by longer bulb (i.e., bulb length/tegulum width = 3.1, vs. 2.7), median crest wider than high (vs. higher than wide), and shorter stylus (cf. Fig. 30B and Dunin 1982: fig. B). The male of D. tapuria sp. nov. is also similar to that of D. damavandica sp. nov., but differs by the median crest wider than high (vs. higher than wide) and relatively shorter stylus (cf. Fig. 30A and Fig. 26A ). The female of this species differs from those of its congeners occurring in the region by the very wide lateral edges of the receptacle (i.e., approximately half of the receptacle’s width, vs. less than half).

Description.

Male (Holotype). Habitus as in Fig. 29A-C . Total length 9.55. Carapace 3.76 long, 2.86 wide. Eye diameters: AME 0.14, PME 0.13, PLE 0.13. Carapace, sternum, chelicerae, labium, and maxillae reddish brown. Legs orange. Abdomen cream-coloured, without any pattern. Spinnerets uniformly dark yellowish. Measurements of legs: I: 14.04 (4.16, 2.14, 3.65, 3.24, 0.85), II: 12.72 (3.79, 2.08, 3.00, 3.11, 0.74), III: 10.01 (2.93, 1.44, 2.14, 2.77, 0.73), IV: 11.90 (3.72, 1.48, 2.73, 3.19, 0.78). Spination: I: Fe: 2pl. II: Fe: 1pl. III: Ti: 5pl, 3rl, 1v; Mt: 5pl, 2rl, 3v. IV: Fe: 8d, 1rl; Pa: 1pl; Ti: 5pl, 3rl, 6v; Mt: 6pl, 2rl, 5v.

Palp as in Fig. 30A-D ; bulb ca. 3.1 × longer than wide; tegulum bell-shaped, almost as long as wide; psembolus 1.8 × longer than tegulum; median crest triangular, ca. 7 × shorter than length of psembolus, ca. 2.5 × wider than high; posterior apophysis claw-shaped; incision between tegulum and psembolus present; retrolateral crest roundly bent in proximal part and almost straight distally; stylus straight, as long as median crest.

Female. Habitus as in Fig. 29D-F . Total length 18.1. Carapace 7.77 long, 6.01 wide. Eye diameters: AME 0.30, PME 0.30, PLE 0.34. Colouration as in male. Measurements of legs: I: 14.24 (3.99, 2.54, 3.62, 3.44, 0.65), II: 13.46 (4.31, 2.10, 3.22, 3.06, 0.77), III: 10.20 (2.96, 1.70, 1.97, 2.75, 0.82), IV: 13.08 (3.99, 1.72, 2.85, 3.62, 0.90). Spination: I: Fe: 2pl. II: Fe: 2pl. III: Fe: 1pl; Ti: 2pl, 2rl, 4v; Mt: 3pl, 4rl, 5v. IV: Fe: 3d; Ti: 2pl, 2rl, 6v; Mt: 5pl, 4rl, 5v.

Endogyne as in Fig. 31A-D ; length/width ratio ca. 3; receptacle (Re) with shallow median concavity, ca. 4.5 × longer than wide, anterior angles (Aa) indistinct; dorsal arch (Da) trapezoidal, posterior margin ca. 1.6 × longer than anterior, anterior angles rounded; transverse bar (Tb) almost 2 × longer and slightly wider than receptacle; transverse bar’s anterior margin straight, posterior margin arched; lateral edges (Le) very wide, directed latero-posteriorly; posterior diverticulum (Pd) rounded.

Distribution.

Known only from the listed localities in Mazandaran Province, northern Iran (Fig. 35 ).

Dysdera ninnii species group

Diagnosis. This group can be diagnosed by a combination of the following characters: chelicerae shorter than the width of carapace, carapace relatively short with anteriorly converging lateral margins, and bulb with simple crest, simple apex bearing a long subapical tooth, and a crescent-shaped lateral projection ( Deeleman-Reinhold and Deeleman 1988).

Figures

Figure 26. Male of Dysdera damavandica sp. nov., bulb A retrolateral view B prolateral view C anterior view D posterior view. Scale bars: 0.25 mm. Abbreviations: Ap - posterior apophysis, Mc - median crest, Rc - retrolateral crest, St - stylus.

Figure 29. Male (A-C) and female (D-F) of Dysdera tapuria sp. nov., habitus A, D dorsal view B, E ventral view C, F lateral view. Scale bars: 1.0 mm.

Figure 30. Male of Dysdera tapuria sp. nov., bulb A retrolateral view B prolateral view C anterior view D posterior view. Scale bars: 0.25 mm.

Figure 31. Female of Dysdera tapuria sp. nov., endogyne A ventral view B-D dorsal view. Scale bars: 0.25 mm. Abbreviations: Aa - anterior angle, Da - dorsal arch, Le - lateral edge, Pd - posterior diverticulum, Re - receptacle, Tb - transverse bar.

Figure 35. Distribution records of Dysdera spp. in Iran 1 D. achaemenes sp. nov. 2 D. bakhtiari sp. nov. 3 D. hormuzensis sp. nov. 4 D. iranica sp. nov. 5 D. isfahanica sp. nov. 6 D. mazeruni sp. nov. 7 D. persica sp. nov. 8 D. pococki 9 D. sagartia sp. nov. and D. medes sp. nov. 10 D. verkana sp. nov. 11 D. xerxesi sp. nov. 12 D. damavandica sp. nov. 13 D. tapuria sp. nov. 14 D. genoensis sp. nov.