Cheiramiona kivuensis, 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 : 79-80

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.6116328
persistent identifier	https://treatment.plazi.org/id/A20587CD-FFB7-FFA3-91E2-F8992BABD0D8
treatment provided by	Plazi
scientific name	Cheiramiona kivuensis
status	sp. nov.

Treatment

Cheiramiona kivuensis sp. nov.

Figs 34–39 View FIGURES 25 – 36. 25 – 27 View FIGURES 37 – 48. 37 – 39 , 99 View FIGURES 97 – 100

Type material. Holotype ♀, DEMOCRATIC REPUBLIC OF CONGO: Kivu, Mwenga, Luiko gold mine, 03º03’S, 28º26’E, 19.I.1952, N. Leleup leg. ( MRAC 92415); Allotype ♂, RWANDA: Rugege forest, 02º30’S, 29º15’E, III.1951, N. Leleup leg. ( MRAC 92507); Paratypes: D.R. CONGO: 1♀, Kivu, Mwenga, Luiko gold mine, 03º03’S, 28º26’E, 23.I.1952, N. Leleup leg. ( MRAC 92409); 1♂, Kivu, Rukumi, Karisimbi volcano, 01º30’S, 29º27’E, 23.VII.1970, M. Lejeune leg. ( MRAC 138366); 1♂, Kivu, Rukumi, south face of Karisimbi volcano, 01º31’S, 29º28’E, 28.VII.1970, M. Lejeune leg. ( MRAC 138495); 1♂, Kikura, northern face of Ruwenzori, 00º35’N, 29º57’E, VII–VIII.1974, M. Lejeune leg. ( MRAC 155348).

Etymology. The specific name is an adjective derived from Kivu, the province in which the type locality is located.

Diagnosis. Females of Cheiramiona kivuensis sp. nov. are similar to those of C. muvalensis Lotz, 2002 in the small epiginal plate, the round SPER and the copulatory tubes proceeding anterior to posterior, medially, but is differentiated by the anterior widening of the copulatory ducts ( Figs 35–36 View FIGURES 25 – 36. 25 – 27 , see Lotz 2002: figs 126–127). Males are similar to C. kalongensis Lotz, 2002 in the EM being long and thin in the last two thirds, but are differentiated by the straighter and more evenly narrowing EM and the RTA with two distal lobed apices, as opposed to a single point ( Figs 38–39 View FIGURES 37 – 48. 37 – 39 , see Lotz 2002: figs 90–91). C. muvalensis and C. kalongensis may be conspecific.

Description. Female (n = 2): TL = 7.20 (7.0–7.4); CL = 2.60 (2.5–2.7); CW = 1.95 (1.9–2.0); OAL = 0.40 (0.4–0.4); OAW = 1.15 (1.1–1.2); CLL = 0.10 (0.1–0.1). Chelicerae: robust with long fangs; PMT:RMT = 3:3 ( Fig. 34 View FIGURES 25 – 36. 25 – 27 ). Measurements: AME–AME 0.10; AME–ALE 0.15; AME diameter 0.15; PME–PME 0.20; PME–PLE 0.20; PME diameter 0.15; MOQAW 0.40; MOQPW 0.50; CI (CL/CW) 1.35; LL:CL 3.70; STL 1.5; STW 1.2. Leg measurements: I—2.7+1.0+2.5+2.7+1.1 = 10.0; II—2.1+0.9+1.7+1.9+0.8 = 7.4; III—1.7+0.8+1.2+1.7+0.6 = 6.0; IV—2.4+0.9+2.0+2.4+0.8 = 8.5; Palp—1.1+0.4+0.6+1.1 = 3.2. Leg spines: I—0, 0-1p-0, 1v- 0- 1 v; II—0, 0-1p-0, 2v- 0- 1 v; III—0, 0-1p1r-0, 2 v1 r-1 v1 r-3 v1 p1r; IV—0, 0-1r-0, 2 v1 r-2 v1 p1r-3 v1 p1r. Abdomen: creamy-yellow with a faint heart mark. Epigynum ( Figs 35–36 View FIGURES 25 – 36. 25 – 27 ): wider than long, with small posterior central depression; copulatory openings next to each other in depression; internally, short copulatory ducts proceed anteriorly with broad loop before ending in anterior-median edge of SPER; copulatory ducts widen in anterior loop and narrow again before entering SPER; fertilization tubes enter SPER posterior-medially.

Male: (n = 5) TL = 4.76 (4.1–5.4); CL = 2.28 (2.0–2.6); CW = 1.90 (1.7–2.2); OAL = 0.33 (0.30–0.35); OAW = 0.91 (0.8–1.0); CLL = 0.05 (0.05–0.05). Chelicerae: robust with long fangs; PMT:RMT = 5:3 ( Fig. 37 View FIGURES 37 – 48. 37 – 39 ). Measurements: AME–AME 0.10; AME–ALE 0.10; AME diameter 0.10; PME–PME 0.15; PME–PLE 0.15; PME diameter 0.12; MOQAW 0.30; MOQPW 0.40; CI (CL/CW) 1.19; LL:CL 3.68; STL 1.1; STW 1.0. Leg measurements: I—2.3+0.7+2.4+2.6+1.2 = 9.2; II—1.8+0.7+1.6+1.8+0.9 = 6.8; III—1.5+0.6+1.1+1.5+0.6 = 5.3; IV—2.1+0.7+1.7+2.0+0.9 = 7.4; Palp—1.0+0.35+0.35+1.3 = 3.0. Leg spines: I—0, 0, 2v- 0-0; II—0, 0, 2v- 0- 1 v; III—0, 0-1r-0, 2v- 1p-3 v1 p1r; IV—0, 0-0-1p1r, 2v-1 v1 p1r-3 v1 p1r. Abdomen: similar to female. Palp ( Figs 38–39 View FIGURES 37 – 48. 37 – 39 ): cymbium elongate, almost twice as long as patella plus tibia length; tibia with Y-shaped RTA, with small bump between upturned external arms; TA long and narrow, slightly sclerotized, curved towards EM at tip; EM short, thick at base and narrowing gradually towards apex; CON curved retrolaterally, distinct but not sclerotized.

Distribution. Only known from east-central D.R. Congo and Rwanda ( Fig. 99 View FIGURES 97 – 100 ).

Habitat. Collected from forest leaf litter.