Evolution of nuptial-gift-related male prosomal structures: taxonomic revision and cladistic analysis of the genus Oedothorax (Araneae: Linyphiidae: Erigoninae) Author Lin, Shou-Wang Author Lopardo, Lara Author Uhl, Gabriele text Zoological Journal of the Linnean Society 2022 2021-11-20 195 417 584 journal article 115951 10.1093/zoolinnean/zlab033 75b10efe-a17d-4d10-b46e-094c6a7ebf01 0024-4082 6967774 BE2B3859-8F6A-4543-8A69-91840F82377B MITRAGER NOORDAMI VAN HELSDINGEN, 1985 ( FIGS 37 , 38O , 39O , 40P; SUPPORTING INFORMATION, FIG. S3C ) Mitrager noordami van Helsdingen, 1985: 353 , figs 1–14 (Dmf). Examined material: Indonesia : Central Java , Dijeng Plateau , near Gunung Prahu , 2580 m , sifted from litter among mosses, ferns and Ericaceae , 1♂ 1♀ 8.viii.1977 , leg. A. Noordam ( paratype , Naturalis Museum, Leiden) . Diagnosis: Males: This species can be recognized by its unique, prominent prosomal modification ( Fig. 38O ). Females: Somatic features and coloration similar to other Mitrager and some Callitrichia species , but can be distinguished by the much more convergent borders between the dorsal and ventral plates of the epigyne ( Fig. 37F, G ). Description: Male ( paratype , Naturalis Museum): Total length: 2.27. Prosoma: 1.13 long, 0.77 wide, with extremely high, ballon-shaped post-PME hump, inter-PME region with a protrution with two round lobes, anterior margin of lobes with row of light-coloured setae, interocular region with two dense, light-coloured setal tufts ( Fig. 38O ). Eyes: AME-AME: 0.03, AME width: 0.05, AME-ALE: 0.06, ALE width: 0.07, ALE-PLE: 0.01, PLE width: 0.08, PLE-PME: 0.1, PME width: 0.07, PME-PME: 0.35. Clypeus hirsute. Sternum: 0.6 long, 0.58 wide. Chelicerae: stridulatory striae imbricated, rows widely and evenly spaced ( Fig. 39O ). Legs: dorsal proximal macroseta on tibia IV 1.80 times diameter of tibia; Tm I: 0.82. Pedipalp: patella prolateral proximal vertical macrosetae absent; tibia with one prolateral, two retrolateral trichobothria; TPS absent; TPA large, conical, distal part narrow and flat, tip curved downwards; PC distal setae close to distal clasp, distalsetae-bearing area slightly wide, distal clasp without striae, clasp extended apically; T without papillae; PT median-long, with small papillae; TS median-long, slender, without papillae; MSA present; DSA wide, round at tip, ventral corner slightly more protruded ( Fig. 37A ); EM broad and flat, retrolateral to LER, with parallel folds extended until anterior margin, exceeding ARP; ARP flat, blunt, short; LER large, bent over E; VRP long, thick at base; R without papillae; TP long,round at tip; E median-long, retrolaterally curved, E tip with prolateral anterior flat extension ( Fig. 37A ). Opisthosoma: dorsal pattern see Fig. 40P ; PMS with mAP, AC absent; PLS with triad, one AC ( Fig. 37H ). Female ( paratype , Naturalis Museum): Total length: 2.48. Prosoma: 1.22 long, 0.84 wide. Eyes: AME-AME: 0.03, AME width: 0.05, AME-ALE: 0.03, ALE width: 0.08, ALE-PLE: 0.01, PLE width: 0.08, PLE-PME: 0.05, PME width: 0.08, PME-PME: 0.12. Clypeus: not hirsute, one sub-AME seta. Sternum: 0.67 long, 0.62 wide. Legs: dorsal proximal macroseta on tibia III 2.39 times diameter of tibia; Tm I: 0.62. Epigyne: Clade 13 characteristic morphology, border between ventral and dorsal plates largely converging toward the middle ( Fig. 37F, G ). Opisthosoma dorsal pattern same as male; PMS one CY, one mAP, AC absent; PLS with triad, two CY, one AC ( Fig. 37I ). Distribution: Only known from the type locality in Indonesia . Remarks: The setal tufts at interocular region and inter-PME region are aggregated setae, similar to that found in some Callitrichia species.