Cheiramiona plaatbosensis, Lotz, L. N., 2015

Lotz, L. N., 2015, New species of the Afrotropical spider genus Cheiramiona Lotz & Dippenaar- Schoeman (Araneae: Eutichuridae), Zootaxa 3981 (1), pp. 71-94 : 87-88

publication ID	https://doi.org/ 10.11646/zootaxa.3981.1.3
publication LSID	lsid:zoobank.org:pub:EFC505A4-8DB1-4120-8FD0-E16AC3C0C5EB
DOI	https://doi.org/10.5281/zenodo.6116348
persistent identifier	https://treatment.plazi.org/id/A20587CD-FFAF-FFBB-91E2-F9262BABD1B8
treatment provided by	Plazi
scientific name	Cheiramiona plaatbosensis
status	sp. nov.

Treatment

Cheiramiona plaatbosensis sp. nov.

Figs 73–78 View FIGURES 73 – 84. 73 – 78 , 101 View FIGURES 101 – 102

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 View FIGURES 73 – 84. 73 – 78 ). Males are differentiated by the longer outer apex of the EM and the broader TA apex compared to congeners ( Figs 77–78 View FIGURES 73 – 84. 73 – 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 View FIGURES 73 – 84. 73 – 78 ). 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 View FIGURES 73 – 84. 73 – 78 ): 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 View FIGURES 73 – 84. 73 – 78 ). 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 View FIGURES 73 – 84. 73 – 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 View FIGURES 101 – 102 ).

Habitat. Collected from forest leaf litter.