Eresus transcaucasicus Zamani, Seropian, Zarikian, Bulbulashvili & Szűts, 2025, sp. nov.
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2025
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| author | Zamani, Alireza Seropian, Armen Zarikian, Noushig Bulbulashvili, Natalia Szűts, Tamás |
| author_facet | Zamani, Alireza Seropian, Armen Zarikian, Noushig Bulbulashvili, Natalia Szűts, Tamás |
| contents | <p><i>Eresus transcaucasicus</i> sp. nov.</p><p>Figs 1 A – F, 2 A – D, 3 A – F, 4 A – L</p><p><i>Eresus kollari</i>: Zarikian 2022: 759, fig. 1 (♂).</p><p><i>Eresus</i> sp.: Seropian et al. 2023: 237, fig. S 1 (♂).</p><p><b>Type material.</b></p><p><i>Holotype</i> • ♂ (ZMUT 1017, SAJ 366): Armenia: Aragatsotn Province: Ara Mountains, 40°23'N, 44°28'E, 1770 m, 03.11.2022, leg. N. Zarikian. <i>Paratypes</i>: • 5 ♂ (ZMUT 1018, HNHM 11678, HNHM 11448, HNHM 11589, HNHM 11491), collected with the holotype; • 2 ♂ (ISU; CaBOL-IDs 1018700, 1018701): Georgia: Shida Qartli Region: Gori, path to Tsedisi Fortress, steppe, 41°58'02.6"N, 44°05'54.2"E, 850 m, 23.10.2021, leg. A. Seropian, N. Bulbulashvili; • 1 ♂ (ISU; CaBOL-ID 1009989): Gori, steppe, 41°58'31.1"N, 44°06'03.6"E, 600 m, 25.09.2024, leg. N. Bulbulashvili; • 1 ♂ (ISU; CaBOL-ID 1009988): Tbilisi: Dighomi village, heathland, 41°46'49.8"N, 44°42'14.0"E, 667 m, 28.09.2024, leg. A. Seropian, N. Bulbulashvili.</p><p><b>Diagnosis.</b></p><p>The new species belongs to the <i>sandaliatus</i> group sensu Zamani et al. (2025). In the overall shape of the conductor (Cn) and the general coloration pattern of the body and appendages, it most closely resembles <i>E. kollari</i> and <i>E. hermani</i>. It can be distinguished from <i>E. kollari</i> by its more robust terminal tooth (TT) having a distinct bulge (Figs 2 C, F, I, L, 3 C, F cf. Miller et al. 2012: fig. 43 J). From <i>E. hermani</i>, it differs in the conductor distinctly longer than wide in retrolateral view (<i>vs.</i> almost as long as wide; Figs 2 C, F, I, L, 3 C, F cf. Kovács et al. 2015: fig. 3 B).</p><p><b>Description.</b></p><p><i>Male</i> (holotype). Habitus as in Figs 1 B, 2 D. Total length 8.21; carapace 4.68 long, 3.21 wide, 2.50 high; abdomen 4.78 long, 3.76 wide. Carapace and chelicerae dark brown, almost black, densely coated with black setae; pars cephalica elevated, covered with black setae; pars thoracica with sparse white setae, margins with few orange setae. Palpal segments without white setae; femur, patella and tibia densely covered with dark setae of black or grey tone. Legs I and II densely coated with black setae, with rings of white setae on proximal and distal joints of segments; legs III and IV coated with red setae coverage; distal end of tibiae and metatarsi with white ring of setae. Abdomen black on sides, anterior part of dorsum and posterior to epigastric fold; dorsum red, with two pairs of large and one pair of small black dots; venter anterior to epigastric fold red; booklung covers with short red setae. Measurements of leg segments: I: 9.02 (2.89, 1.45, 1.51, 1.86, 1.31); II: 7.75 (2.45, 1.37, 1.31, 1.53, 1.09); III: 6.60 (2.19, 1.23, 1.06, 1.30, 0.82); IV: 9.09 (2.82, 1.62, 1.85, 1.72, 1.08).</p><p>Palp as in Fig. 2 A – C; conductor (Cn) distinctly longer than wide; terminal tooth (TT) well-developed and robust, slightly bulging, subequal to lamella (Lm), with smooth transition to base of conductor in lateral view; lamella> 2 × longer than high; lamellar groove shallow.</p><p>Variation (<i>n</i> = 5). Habitus of paratypes from Armenia as in Fig. 1 A, C, and from Georgia as in Fig. 1 D – F. Measurements: total length 8.21–8.92; carapace length 4.68–4.72, width 3.21–3.35. Sparse white setae may be present at black spots around sigilla (Fig. 1 D – F). Palp of paratypes from Armenia as in Fig. 3 A, B, and from Georgia as in Figs 3 C – F, 4 A – L. Conductor: length / width ratio: 1.2–1.5; very slight shoulder present in some specimens (Figs 2 C, 4 C, F); depth of lamellar groove slightly varying (Figs 3 A – F, 4 C, F, I, L).</p><p><b><i>Female</i>.</b> Unknown.</p><p><b>Habitat.</b></p><p>The specimens were collected under stones and on the ground in warm, dry mountain slopes with sparse vegetation.</p><p><b>Phenology.</b></p><p>Early to late autumn.</p><p><b>Distribution.</b></p><p>Known only from the listed localities in Lesser Caucasus Mountains in Armenia and Georgia (Fig. 5).</p><p><b>Etymology.</b></p><p>The specific epithet refers to the distribution of the species in the South Caucasus, also known as Transcaucasia.</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_16814592 |
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| language | |
| publishDate | 2025 |
| publisher | Zenodo |
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| spellingShingle | Eresus transcaucasicus Zamani, Seropian, Zarikian, Bulbulashvili & Szűts, 2025, sp. nov. Zamani, Alireza Seropian, Armen Zarikian, Noushig Bulbulashvili, Natalia Szűts, Tamás Biodiversity Taxonomy Animalia Arthropoda Arachnida Araneae Eresidae Eresus Eresus transcaucasicus <p><i>Eresus transcaucasicus</i> sp. nov.</p><p>Figs 1 A – F, 2 A – D, 3 A – F, 4 A – L</p><p><i>Eresus kollari</i>: Zarikian 2022: 759, fig. 1 (♂).</p><p><i>Eresus</i> sp.: Seropian et al. 2023: 237, fig. S 1 (♂).</p><p><b>Type material.</b></p><p><i>Holotype</i> • ♂ (ZMUT 1017, SAJ 366): Armenia: Aragatsotn Province: Ara Mountains, 40°23'N, 44°28'E, 1770 m, 03.11.2022, leg. N. Zarikian. <i>Paratypes</i>: • 5 ♂ (ZMUT 1018, HNHM 11678, HNHM 11448, HNHM 11589, HNHM 11491), collected with the holotype; • 2 ♂ (ISU; CaBOL-IDs 1018700, 1018701): Georgia: Shida Qartli Region: Gori, path to Tsedisi Fortress, steppe, 41°58'02.6"N, 44°05'54.2"E, 850 m, 23.10.2021, leg. A. Seropian, N. Bulbulashvili; • 1 ♂ (ISU; CaBOL-ID 1009989): Gori, steppe, 41°58'31.1"N, 44°06'03.6"E, 600 m, 25.09.2024, leg. N. Bulbulashvili; • 1 ♂ (ISU; CaBOL-ID 1009988): Tbilisi: Dighomi village, heathland, 41°46'49.8"N, 44°42'14.0"E, 667 m, 28.09.2024, leg. A. Seropian, N. Bulbulashvili.</p><p><b>Diagnosis.</b></p><p>The new species belongs to the <i>sandaliatus</i> group sensu Zamani et al. (2025). In the overall shape of the conductor (Cn) and the general coloration pattern of the body and appendages, it most closely resembles <i>E. kollari</i> and <i>E. hermani</i>. It can be distinguished from <i>E. kollari</i> by its more robust terminal tooth (TT) having a distinct bulge (Figs 2 C, F, I, L, 3 C, F cf. Miller et al. 2012: fig. 43 J). From <i>E. hermani</i>, it differs in the conductor distinctly longer than wide in retrolateral view (<i>vs.</i> almost as long as wide; Figs 2 C, F, I, L, 3 C, F cf. Kovács et al. 2015: fig. 3 B).</p><p><b>Description.</b></p><p><i>Male</i> (holotype). Habitus as in Figs 1 B, 2 D. Total length 8.21; carapace 4.68 long, 3.21 wide, 2.50 high; abdomen 4.78 long, 3.76 wide. Carapace and chelicerae dark brown, almost black, densely coated with black setae; pars cephalica elevated, covered with black setae; pars thoracica with sparse white setae, margins with few orange setae. Palpal segments without white setae; femur, patella and tibia densely covered with dark setae of black or grey tone. Legs I and II densely coated with black setae, with rings of white setae on proximal and distal joints of segments; legs III and IV coated with red setae coverage; distal end of tibiae and metatarsi with white ring of setae. Abdomen black on sides, anterior part of dorsum and posterior to epigastric fold; dorsum red, with two pairs of large and one pair of small black dots; venter anterior to epigastric fold red; booklung covers with short red setae. Measurements of leg segments: I: 9.02 (2.89, 1.45, 1.51, 1.86, 1.31); II: 7.75 (2.45, 1.37, 1.31, 1.53, 1.09); III: 6.60 (2.19, 1.23, 1.06, 1.30, 0.82); IV: 9.09 (2.82, 1.62, 1.85, 1.72, 1.08).</p><p>Palp as in Fig. 2 A – C; conductor (Cn) distinctly longer than wide; terminal tooth (TT) well-developed and robust, slightly bulging, subequal to lamella (Lm), with smooth transition to base of conductor in lateral view; lamella> 2 × longer than high; lamellar groove shallow.</p><p>Variation (<i>n</i> = 5). Habitus of paratypes from Armenia as in Fig. 1 A, C, and from Georgia as in Fig. 1 D – F. Measurements: total length 8.21–8.92; carapace length 4.68–4.72, width 3.21–3.35. Sparse white setae may be present at black spots around sigilla (Fig. 1 D – F). Palp of paratypes from Armenia as in Fig. 3 A, B, and from Georgia as in Figs 3 C – F, 4 A – L. Conductor: length / width ratio: 1.2–1.5; very slight shoulder present in some specimens (Figs 2 C, 4 C, F); depth of lamellar groove slightly varying (Figs 3 A – F, 4 C, F, I, L).</p><p><b><i>Female</i>.</b> Unknown.</p><p><b>Habitat.</b></p><p>The specimens were collected under stones and on the ground in warm, dry mountain slopes with sparse vegetation.</p><p><b>Phenology.</b></p><p>Early to late autumn.</p><p><b>Distribution.</b></p><p>Known only from the listed localities in Lesser Caucasus Mountains in Armenia and Georgia (Fig. 5).</p><p><b>Etymology.</b></p><p>The specific epithet refers to the distribution of the species in the South Caucasus, also known as Transcaucasia.</p> |
| title | Eresus transcaucasicus Zamani, Seropian, Zarikian, Bulbulashvili & Szűts, 2025, sp. nov. |
| topic | Biodiversity Taxonomy Animalia Arthropoda Arachnida Araneae Eresidae Eresus Eresus transcaucasicus |
| url | https://doi.org/10.5281/zenodo.16814592 |