Cheiramiona plaatbosensis Lotz, 2015, sp. nov.
Creators: name: Lotz, L. N.
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Miturgidae
Cheiramiona
Cheiramiona plaatbosensis

description: Cheiramiona plaatbosensis sp. nov.
Figs 73–78, 101
Type material. Holotype ♂, SOUTH AFRICA: Eastern Cape, Humansdorp, Plaatbos Nature Reserve, 33º59’S, 23º55’E, 20.I.2009, A.H. Kirk-Spriggs & S. Otto leg. (NMBA 16791); Allotype ♀, SOUTH AFRICA: Western Cape, Diepwalle Forest Station, 22km NE of Knysna, 33º57’S, 23º10’E, 11–13.I.1985, Griswold, et al. leg. (NMSA); Paratypes: 1♂, SOUTH AFRICA: Eastern Cape, Kasouga Coastal Reserve, 16km WSW of Port Alfred, 33º39’S, 26º45’E, I.1940, J. Omer-Cooper leg. (NMSA); 1♂, SOUTH AFRICA: Western Cape, Diepwalle Forest Station, 22km NE of Knysna, 33º57’S, 23º10’E, 11–13.I.1985, Griswold, et al. leg. (NMSA).
Etymology. The specific name is an adjective taken from the type locality.
Diagnosis. Females of Cheiramiona plaatbosensis sp. nov. are differentiated by the copulatory ducts proceeding posteriorly from the anteriorly positioned copulatory openings (Figs 74–75). Males are differentiated by the longer outer apex of the EM and the broader TA apex compared to congeners (Figs 77–78).
Description. Female (n = 1): TL = 8.0; CL = 3.5; CW = 2.6; OAL = 0.5; OAW = 1.6; CLL = 0.1. Chelicerae: robust with long fangs; PMT:RMT = 4:3 (Fig. 73). Measurements: AME–AME 0.20; AME–ALE 0.30; AME diameter 0.15; PME–PME 0.30; PME–PLE 0.40; PME diameter 0.15; MOQAW 0.50; MOQPW 0.60; CI (CL/ CW) 1.35; LL:CL 4.51; STL 1.6; STW 1.5. Leg measurements: I—4.7+1.5+4.0+4.2+1.4 = 15.8; II— 2.3+1.2+2.2+2.3+1.0 = 9.0; III—1.9+1.1+1.6+1.8+0.7 = 7.1; IV—3.0+1.2+2.5+3.0+1.0 = 10.7; Palp— 1.2+0.6+0.8+1.1 = 3.7. Leg spines: I—0, 0, 1v- 0- 1 v; II—0, 0, 0-0 - 1 v; III—0, 0, 0-0-3 v1 p1r; IV—0, 0, 0-1 v1 r- 3 v1 p1r. Abdomen: creamy-yellow with heart mark and two longitudinal rows of dark marks posterior to heart mark. Epigynum (Figs 74–75): wider than long, with two transversely oval anterior depressions; copulatory openings situated medially in depressions; internally, copulatory ducts proceed posteriorly before ending anteriormedially in SPER; fertilization tubes enter SPER posterior-medially.
Male (n = 3): TL = 6.60 (5.2–8.0); CL = 2.83 (2.2–3.7); CW = 2.33 (1.7–3.1); OAL = 0.42 (0.30–0.55); OAW = 1.43 (1.0–2.0); CLL = 0.08 (0.05–0.10). Chelicerae: robust, long and diverging, with long fangs; cheliceral fang furrow with four to seven teeth, PMT:RMT = 3:1 to 3:4 (Fig. 76). Measurements: AME–AME 0.20; AME–ALE 0.40; AME diameter 0.20; PME–PME 0.40; PME–PLE 0.55; PME diameter 0.15; MOQAW 0.60; MOQPW 0.70; CI (CL/CW) 1.29; LL:CL 5.91; STL 2.1; STW 1.6. Leg measurements: I—3.3+1.1+3.5+3.5+1.6 = 13.0; II— 2.1+0.9+1.9+2.0+0.7 = 7.6; III—1.5+0.7+1.1+1.4+0.6 = 5.3; IV—2.4+0.9+1.9+2.3+0.7 = 8.2; Palp— 1.1+0.5+0.6+0.8 = 3.0. Leg spines: I—0-0-1r, 2v- 4v-1v, 2v- 4v-1v; II—0, 0, 2v- 2v-1v; III—0, 0, 2v-2 v1 p1r- 3 v1 p1r; IV—0, 0, 2v-5 v1 p1r-3 v1 p1r. Abdomen: similar to female. Palp (Figs 77–78): cymbium elongate, slightly longer to slightly shorter than tibia length; tibia with broad spoon-shaped RTA with rounded, narrowed, apex; TA slightly sclerotized, curved towards EM at tip, tip broader than in congeners; EM short, thick, narrowing towards apex, with sharp, longer outer apex and shorter rounded inner apex; CON triangular, distinct but not sclerotized.
Distribution. Only known from the southern parts of South Africa (Fig. 101).
Habitat. Collected from forest leaf litter.
description: Published as part of Lotz, L. N., 2015, New species of the Afrotropical spider genus Cheiramiona Lotz & Dippenaar- Schoeman (Araneae: Eutichuridae), pp. 71-94 in Zootaxa 3981 (1) on pages 87-88, DOI: 10.11646/zootaxa.3981.1.3, http://zenodo.org/record/289020