Trachelas longinquus Haddad & Lyle, 2025, sp. nov.

Trachelas longinquus sp. nov. Figs 7A, 14E, F Etymology. The species name is derived from Latin longus for “long”, which refers to the long embolus of the male. Diagnosis. The male of this species can be easily recognised from congeners by the simple, curved, elongate embolus that is as long as the tegulum and the small, triangular retrolateral patellar apophysis pointing ventrally (Fig. 14E, F), whereas directed ventrolaterally or laterally in other species. Female unknown. Male. Measurements: CL 1.50, CW 1.33, AL 1.90, AW 1.48, TL 3.30, FL 0.10, SL 0.85, SW 0.83, AME–AME 0.08, AME–ALE 0.03, ALE–ALE 0.35, PME–PME 0.15, PME–PLE 0.10, PLE–PLE 0.55. Length of leg segments: I 3.79 (1.18, 0.50, 0.90, 0.73, 0.48); II 3.65 (1.13, 0.48, 0.83, 0.73, 0.48); III 2.68 (0.80, 0.38, 0.55, 0.65, 0.30); IV 3.66 (1.10, 0.43, 0.85, 0.93, 0.35). Carapace reddish-brown (Fig. 7A); eye region dark brown, with black rings around eyes; AME and ALE subequal in size; clypeus height equal to AME diameter; AME separated by 0.5× their diameter; AME separated from ALE by 0.2× AME diameter; PLE slightly larger than PME; PME separated by 1.5× their diameter; PME separated from PLE by PME diameter. Chelicerae brown, endites and labium dark yellow-brown; two promarginal teeth, distal tooth largest; two retromarginal teeth, distal tooth largest. Sternum brown, darker towards border. Abdomen pale yellow, with brown scutum covering almost entire length of abdomen dorsally (Fig. 7A); first pair of sigilla indistinct, anterior to midpoint of abdomen, second pair brown, elongate, posterior to midpoint. Legs uniform pale brown; legs I and II slightly darker, more robust than posteriors; tibiae of legs I and II with long, erect ventral setae. Palp dark yellow-brown, PA small, triangular, positioned distally, with tip directed ventrally; palpal tibia with shallow, rounded retrolateral ridge; CY rounded proximally, narrow distally; TE oval, SP curving transversely across tegulum; EM originating retrolaterally, simple, elongate, curved proventrally (Fig. 14E, F). Type material. Holotype: ♂: CENTRAL AFRICAN REPUBLIC: Sangha-Mbaéré Prefecture, Réserve Spéciale de Forét Dense de Dzanga-Sangha, 12.7 km 326° NW Bayanga, 03°00'18"N, 16°11'36"E, 420 m, 10– 17.V.2001, leg. B.L. Fisher (rainforest, beating low vegetation, BLF 4087) (CAS). Other material examined. None. Distribution. Known only from the type locality (Fig. 12).

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Publication Details

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Zenodo (CERN European Organization for Nuclear Research)
Published
2025-08-07
DOI
https://doi.org/10.5281/zenodo.16987045
Primary Topic
Geochemistry and Geologic Mapping
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article

Trachelas longinquus Haddad & Lyle, 2025, sp. nov.

Zenodo (CERN European Organization for Nuclear Research)
Geochemistry and Geologic Mapping
article

Trachelas longinquus Haddad & Lyle, 2025, sp. nov.

article en

Abstract

Trachelas longinquus sp. nov. Figs 7A, 14E, F Etymology. The species name is derived from Latin longus for “long”, which refers to the long embolus of the male. Diagnosis. The male of this species can be easily recognised from congeners by the simple, curved, elongate embolus that is as long as the tegulum and the small, triangular retrolateral patellar apophysis pointing ventrally (Fig. 14E, F), whereas directed ventrolaterally or laterally in other species. Female unknown. Male. Measurements: CL 1.50, CW 1.33, AL 1.90, AW 1.48, TL 3.30, FL 0.10, SL 0.85, SW 0.83, AME–AME 0.08, AME–ALE 0.03, ALE–ALE 0.35, PME–PME 0.15, PME–PLE 0.10, PLE–PLE 0.55. Length of leg segments: I 3.79 (1.18, 0.50, 0.90, 0.73, 0.48); II 3.65 (1.13, 0.48, 0.83, 0.73, 0.48); III 2.68 (0.80, 0.38, 0.55, 0.65, 0.30); IV 3.66 (1.10, 0.43, 0.85, 0.93, 0.35). Carapace reddish-brown (Fig. 7A); eye region dark brown, with black rings around eyes; AME and ALE subequal in size; clypeus height equal to AME diameter; AME separated by 0.5× their diameter; AME separated from ALE by 0.2× AME diameter; PLE slightly larger than PME; PME separated by 1.5× their diameter; PME separated from PLE by PME diameter. Chelicerae brown, endites and labium dark yellow-brown; two promarginal teeth, distal tooth largest; two retromarginal teeth, distal tooth largest. Sternum brown, darker towards border. Abdomen pale yellow, with brown scutum covering almost entire length of abdomen dorsally (Fig. 7A); first pair of sigilla indistinct, anterior to midpoint of abdomen, second pair brown, elongate, posterior to midpoint. Legs uniform pale brown; legs I and II slightly darker, more robust than posteriors; tibiae of legs I and II with long, erect ventral setae. Palp dark yellow-brown, PA small, triangular, positioned distally, with tip directed ventrally; palpal tibia with shallow, rounded retrolateral ridge; CY rounded proximally, narrow distally; TE oval, SP curving transversely across tegulum; EM originating retrolaterally, simple, elongate, curved proventrally (Fig. 14E, F). Type material. Holotype: ♂: CENTRAL AFRICAN REPUBLIC: Sangha-Mbaéré Prefecture, Réserve Spéciale de Forét Dense de Dzanga-Sangha, 12.7 km 326° NW Bayanga, 03°00'18"N, 16°11'36"E, 420 m, 10– 17.V.2001, leg. B.L. Fisher (rainforest, beating low vegetation, BLF 4087) (CAS). Other material examined. None. Distribution. Known only from the type locality (Fig. 12).

Zenodo (CERN European Organization for Nuclear Research)
University of the Free State (ZA)
Openalex Percentile: Top 61%
Geochemistry and Geologic Mapping
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