Oedothorax uncus, TANASEVITCH, 2015 INCERTAE

Lin, Shou-Wang, Lopardo, Lara & Uhl, Gabriele, 2022, Evolution of nuptial-gift-related male prosomal structures: taxonomic revision and cladistic analysis of the genus Oedothorax (Araneae: Linyphiidae: Erigoninae), Zoological Journal of the Linnean Society 195, pp. 417-584 : 556-559

publication ID

https://doi.org/ 10.1093/zoolinnean/zlab033

publication LSID

lsid:zoobank.org:pub:BE2B3859-8F6A-4543-8A69-91840F82377B

DOI

https://doi.org/10.5281/zenodo.6968305

persistent identifier

https://treatment.plazi.org/id/03B787C7-FF56-76A3-FCEA-D52C4F72F0F8

treatment provided by

Plazi

scientific name

Oedothorax uncus
status

INCERTAE

‘OEDOTHORAX’ UNCUS TANASEVITCH, 2015 View in CoL INCERTAE SEDIS

( FIGS 19B View Figure 19 , 22B View Figure 22 , 24B View Figure 24 , 81 View Figure 81 )

Oedothorax uncus Tanasevitch, 2015: 393 View in CoL , figs 86–88 (Dmf).

Type material: Holotype: India: Meghalaya, Khasi Hills, Mawphlang, 1800 m, forest, sifting litter, ♂ 28.x.1978, leg. C. Besuchet & I. Löbl ( MHNG, examined) . Paratype: 1♀, collected together with the holotype ( MHNG, examined) .

Diagnosis:

Males: This species can be distinguished by the long, hook-shaped VRP, the long, palpal tibial apophysis with distal dentation and the lack of prosomal modification.

Females: This species can be identified by the enlarged median part of copulatory ducts.

Description:

Male (holotype): Total length: 2.20. Prosoma: 0.99 long, 0.8 wide, unmodified; interocular region with short stout setae directed upwards ( Fig. 19B View Figure 19 ). Eyes: AME-AME: 0.04, AME width: 0.05, AME-ALE: 0.03, ALE width: 0.08, ALE-PLE: 0.01, PLE width: 0.08, PLE-PME: 0.06, PME width: 0.06, PME-PME: 0.08. Clypeus: not hirsute, one sub-AME seta. Sternum: 0.61 long, 0.59 wide. Chelicerae: mastidia absent; stridulatory striae ridged, rows compressed and evenly spaced ( Fig. 22B View Figure 22 ). Legs: tibia chaetotaxy 2-2-1-1, dorsal proximal macroseta on tibia I, III and IV 1.35, 2.55 and 2.94 times diameter of tibia, respectively; Tm I: 0.65. All metatarsi with trichobothrium. Pedipalp: patella prolateral proximal vertical macrosetae absent; tibia with one prolateral, two retrolateral trichobothria; TPS absent; TPA prominent, dorso-retrolaterally directed, with several enlarged setal bases at tip; TRA absent ( Fig. 81C View Figure 81 ); PC median-sized, base not visible from dorsal view, distal setae close to distal clasp, distal clasp without striae, clasp directed apically ( Fig. 81A View Figure 81 ); T without papillae; PT median-sized papillae; TS absent ( Fig. 81D View Figure 81 ); MSA present; DSA tip wavy ( Fig. 81A View Figure 81 ); EM flat, length approximately equals ARP, with long papillae ( Fig. 81D View Figure 81 ); ARP flat, weakly sclerotized; LER absent; VRP long, dorsally curved, tip pointed, proximally directed; TP tip round, dorsally directed; E retrolaterally spiral, anterior margin at base slightly wavy ( Fig. 79B View Figure 79 ). Opisthosoma: dorsal pattern see Fig. 24B View Figure 24 ; PMS with mAP, AC absent; PLS with triad, one AC ( Fig. 81G, H View Figure 81 ).

Female (paratype): Total length: 2.28. Prosoma: 1.01 long, 0.78 wide. Eyes: AME-AME: 0.04, AME width: 0.04, AME-ALE: 0.02, ALE width: 0.09, ALE- PLE: 0.01, PLE width: 0.08, PLE-PME: 0.05, PME

width: 0.08, PME-PME: 0.06. Clypeus: not hirsute, one sub-AME seta. Sternum: 0.58 long; 0.61 wide. Legs: tibia chaetotaxy 2-2-1-1, dorsal proximal macroseta on tibia I and IV 2.28 and 3.44 times diameter of tibia, respectively; Tm I: 0.60. Epigyne: Clade 13 characteristic morphology, CO posteriorly oriented, middle part of copulatory ducts enlarged, entrances of copulatory ducts into spermathecae ectal to exits of fertilization ducts ( Fig. 81E, F View Figure 81 ). Opisthosoma: dorsal pattern same as male; PMS with mAP, one CY; PLS with triad, two CY, one AC ( Fig. 81I, J View Figure 81 ).

Distribution: India, only known from the type locality.

Habitat: Forest litter.

Remarks. According to the results of our phylogenetic analysis and the lack of the distinctive characteristics of Oedothorax s.s., this species is more closely related to Atypena , some ‘ Oedothorax ’ incertae sedis species and Mitrager , which, as in this species, are distributed in the Himalayan region and the Oriental realm. We provisionally leave the taxonomic status of this species unchanged until further data become available.

MHNG

Museum d'Histoire Naturelle

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Linyphiidae

Genus

Oedothorax

Loc

Oedothorax uncus

Lin, Shou-Wang, Lopardo, Lara & Uhl, Gabriele 2022
2022
Loc

Oedothorax uncus

Tanasevitch AV 2015: 393
2015
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