Callitrichia sellafrontis Scharff 1990
Creators: name: Lin, Shou-Wang
name: Lopardo, Lara
name: Uhl, Gabriele
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Linyphiidae
Callitrichia
Callitrichia sellafrontis

description: CALLITRICHIA SELLAFRONTIS SCHARFF, 1990
(FIGS 19H, 20, 22H, 24H, 26D; SUPPORTING INFORMATION, FIG. S2F)
Callitrichia sellafrontis Scharff, 1990a: 19, figs 22–30 (Dmf).
Type material: Holotype: Tanzania: Uzungwa Mts., lringa Region, Uzungwa Scarp Forest Reserve (= Chita
Forest) above Chita village, montane rain forest, 1600 m, sweepnetted, ♂ 12.xi.1984, leg. N, Scharff (ZMUC, not examined). Paratypes: same locality with holotype 5♂ 11♀, leg. N, Scharff (ZMUC, not examined); same locality, 1650 m, sweep-netted, 1♂ 3♀ 12–13.xi.1984, leg. N, Scharff (ZMUC, not examined); same locality, 1600 m, litter, 1♂ 6♀ 08–12.xi.1984, leg. N, Scharff; same locality, 1500 m, sweep-netted, 9♂ 16♀ 02–13. xi.1984, leg. N, Scharff (ZMUC, not examined).
Examined material: Tanzania: Iringa. Mufindi Dist. Uzungwa Scarp For. Res. 8°30.05’S, 35°52’ E. elev. 1515 m, 2♂ 3♀ 4.iii.1996. McKamey et al. Canopy Fog 35 (ZMUC, 3 vials).
Diagnosis:
Males: This species can be recognized by its unique saddle-shaped prosomal modification and the pair of distinct setal tuft on the interocular lobe.
Females: Somatic features, as well as epygyne morphology, similar to many congeners like Ca. hamifera, Ca. kenyae, Ca. ruwenzoriensis etc. Further detailed comparison of epigyne morphologies is needed (beyond the scope of the current study).
Description:
Male (ZMUC): Total length: 1.6. Prosoma: 0.76 long, 0.7 wide, saddle-shaped, with inter-AME-PME lobe and PME lobe; inter-AME-PME-lobe with one pair of setal tufts on frontal surface and thin, long setae on lateral, dorsal and posterior surface (Figs 19H, 26D). Eyes: AME-AME: 0.04, AME width: 0.05, AME-ALE: 0.04, ALE width: 0.05, ALE-PLE: 0.02, PLE width: 0.05, PLE-PME: 0.17, PME width: 0.05, PME-PME: 0.05. Clypeus: not hirsute, one sub-AME seta. Sternum: 0.48 long, 0.52 wide. Chelicerae: mastidia absent; stridulatory striae ridged, rows compressed and evenly spaced (Fig. 22H). Legs: dorsal proximal macroseta on tibia II 1.43 times diameter of tibia; Tm I: 0.80. Pedipalp: patella prolateral proximal vertical macrosetae absent; TPA large, apically hooked and hollow ventrally (Fig. 20C); PC base not visible from dorsal view, distal setae close to distal clasp, distal-setae-bearing area wide, distal clasp extended apically (Fig. 20A); T without papillae, PT truncated, without papillae; TS median-long, slander, without papillae (Fig. 20D); MSA present; DSA wide, tip with with several denticles (Fig. 20A); EM broad and flat, without papillae, not exceeding ARP; ARP thick; LER absent; VRP long; radical part close to ARP wrinkled, with papillae between ARP, VRP and E; TP long; E retrolaterally spiral, flat, with papillae and striation (Fig. 20B, E). Opisthosoma: dorsal pattern see Fig. 24H; PMS without spigots; PLS with one FL (Fig. 20K).
Female (ZMUC): Total length: 2.1. Prosoma: 0.82 long, 0.64 wide. Eyes: AME-AME: 0.02, AME width: 0.05, AME-ALE: 0.03, ALE width: 0.06, ALE-PLE: 0.01, PLE width: 0.05, PLE-PME: 0.06, PME width: 0.05, PME- PME: 0.05. Clypeus: not hirsute, one sub-AME seta. Sternum: 0.48 long, 0.48 wide. Legs: dorsal proximal macroseta on tibia I, II, III and IV 3.43, 3.41, 4.11 and 3.75 times diameter of tibia, respectively; Tm I: 0.75. Epigyne: Clade 13 characteristic morphology (Fig. 20F– H); Opisthosoma: dorsal pattern as male; spigots as in male, PMS with one CY; PLS with two CY (Fig. 20I, J).
Remarks: Males of this species have a pair of featherlike setal tufts at the interocular region, superficially similar to those found in Mitrager coronata (Tanasevitch, 1998) comb. nov. and related species. However, the structure in this species is formed by many aggregated setae, while each of the two pairs of feather-like setae found in Mitrager species are branched single large setae.
CALLITRICHIA UNCATA (JOCQUÉ & SCHARFF, 1986)
description: Published as part of 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), pp. 417-584 in Zoological Journal of the Linnean Society 195 on pages 478-480, DOI: 10.1093/zoolinnean/zlab033, http://zenodo.org/record/6967774