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 CALLITRICHIA LATITIBIALIS ( BOSMANS, 1988 ) COMB. NOV. ( FIGS 19P , 22P , 24P , 28 ; SUPPORTING INFORMATION, FIG. S2M ) Oedothorax latitibialis Bosmans, 1988: 17 , fig. 5E–g (Dm). Type material: Holotype : Cameroon : Bambouto Mountains, 2700 m , pitfall in montane grassland, 1♂ 17.i.1983 ( RMCA 165.079, examined). Paratypes : 1♂ , same data ( RMCA 165.087, examined). Diagnosis: Males: This species can be identified by the lack of prosomal modification and the conspicuous, characteristic male palpal tibial apophyses, similar to that of Ca. longiducta , but with a different denticle morphology on tibial prolateral apophyses; the body size of this species is larger. Description: Male ( holotype ): Total length: 2.11. Prosoma: 1.09 long, 0.89 wide, unmodified ( Fig. 19P ). Eyes: AME-AME: 0.02, AME width: 0.06, AME-ALE: 0.03, ALE width: 0.09, ALE-PLE: 0.01, PLE width: 0.08, PLE-PME: 0.05, PME width: 0.09, PME-PME: 0.05. Chelicerae: mastidia absent; stridulatory striae rows widely and evenly spaced ( Fig. 22P ). Clypeus: not hirsute, one sub- AME seta. Sternum: 0.62 long, 0.61 wide. Legs: dorsal proximal macroseta on tibia I 1.61 times diameter of tibia; Tm I: 0.63. Pedipalp: patella prolateral proximal vertical macrosetae absent; tibia with slender, highly scletotized, pointed, dorsally situated apophysis bent retrolaterally at tip, base connected with TPA through thin plate; TPA wide, flat, apical ridge with peculiar denticles ( Fig. 28C ); PC large, base not visible from dorsal view, distal setae close to distal clasp, distalsetae-bearing area wide, distal clasp without striae, clasp extended apically; T without papillae, PT without papillae, distal rim thin and smooth at margin; TS short, without papillae; MSA inconspicuous; DSA tip straight; EM flat, anterior margin with small papillae, not exceeding ARP ( Fig. 28A ); ARP pointed; LER absent; VRP present, retrolaterally oriented; TP tip slender; E slightly retrolaterally spiral ( Fig. 28B, D ). Opisthosoma: single-coloured dark grey ( Fig. 24P ); PLS with triad, 3+ AC ( Fig. 28E ). Figure 28. Callitrichia latitibialis ( Bosmans, 1988 ) . A–D, male right palp, images flipped horizontally. A, retrolateral view. B, prolateral view. C, dorsal view. D, ventral view. E, male left posterior lateral spinneret. Scale bar 0.1 mm. Male ( paratype ): Prosoma: 1.10 long, 0.88 wide. Legs: dorsal proximal macroseta on tibia II and III 1.70 and 2.31 times diameter of tibia, respectively; Tm I: 0.63. Female: Unknown. Distribution: Cameroon , only known from the type locality. Habitat: Montane grasslands. Remarks: According to the results of our phylogenetic analysis this species is transferred to Callitrichia , a placement also consistent with morphological traits of the species.