Cebrennus laurae, Jäger, Peter, 2014

Jäger, Peter, 2014, Cebrennus Simon, 1880 (Araneae: Sparassidae): a revisionary up-date with the description of four new species and an updated identification key for all species, Zootaxa 3790 (2), pp. 319-356 : 336

Cebrennus laurae spec. nov.

Figs 101–108 , 173

Type material. CANARY ISLANDS. Holotype male (PJ 3404), labelled “71.I.d” ( MNHN). Paratype: 1 male (PJ 3405), labelled “71.1a, T71-1” ( SMF).

Diagnosis. Medium-sized Sparassinae, body length of female: 12.8. Copulatory organ similar to those of C. villosus and C. concolor in having the distal part of the embolus coiled in a circle, but distinguished by 1. distal coil of embolus situated at distal tegulum (retrolaterally in C. villosus and C. concolor ), 2. RTA distinctly longer than in C. villosus and C. concolor (shorter or almost absent in C. villosus and C. concolor ), 3. embolus arising in a 6- o’clock-position (8- to 9-o’clock-position in C. villosus and C. concolor ) ( Figs. 105–106 ).

Etymology. The species is dedicated to my beloved daughter Laura Schwalbach; noun (name) in genitive case.

Description. Female (holotype): PL 6.4, PW 5.3, AW 4.0, OL 6.5, OW 4.5. AME 0.39, ALE 0.31, PME 0.25, PLE 0.28, AME–AME 0.31, AME–ALE 0.35, PME–PME 0.48, PME–PLE 1.04, AME–PME 0.43, ALE–PLE 0.82, clypeus AME 0.27, clypeus ALE 0.23 ( Fig. 108 ). Spination: Palp: 0 20, 0 0 0, 1000; legs: femur I 223(324), II 3 (4)23, III 322(1), IV 321; patella 000; tibia 2024; metatarsus I–III 2024, IV 3036. Ventral metatarsi I–IV with sparse scopula in distal half, without spines or bristles distally. Leg formula: 2143. Measurements of palp and legs: Palp 7.0 (2.4, 0.9, 1.1, -, 2.6), leg I 24.0 (6.7, 2.6, 6.2, 6.6, 1.9), leg II 26.6 (7.4, 2.7, 7.1, 7.3, 2.1), leg III 19.2 (5.8, 2.3, 4.9, 4.7, 1.7), leg IV 23.2 (7.1, 2.4, 5.8, 6.2, 1.7). Cheliceral furrow with 2 anterior and 6 adnate posterior teeth, without denticles ( Fig. 107 ). Margin of chelicerae close to fang base with 2 bristles.

Palp as in diagnosis ( Figs 105–106 ). RTA similarly long as in C. intermedius , but disto-retrolaterad (distad in C. intermedius ). Distal cymbium with intermediate shape between C. villosus (blunt) and C. concolor (pointed). Distal half of cymbium with dorsal scopula. Distal coil of embolus partly hidden behind bulging tegulum.

Colouration in ethanol ( Figs 101–104 ): Yellowish- to reddish-brown. Dorsal prosoma yellowish-brown with anterio-lateral margin darker. Sternum, ventral coxae and femora pale yellowish-brown. Gnathocoxae and labium reddish-brown with light yellowish-brown distal lip. Chelicerae deep reddish-brown with distal margins black. Palp and legs yellowish-brown with distal segments darker. Opisthosoma uniformly yellowish-brown.

Female: unknown.

Variation. Paratype with PL 5.8, PW 5.0, AW 3.6, OL 5.7, OW 5.0. Dorsal opisthosoma with median row of indistinct patches.

Distribution. Only known from the type locality ( Fig. 173 ).

Figures

FIGURE 173. Distribution records of Cebrennus spp. (according to Jäger 2000 and references therein, this paper and Reimoser 1919). Note that the exact locality for C. laurae spec. nov. is unknown.

FIGURES 101 – 104. Cebrennus laurae spec. nov., holotype male from Canary Islands, habitus (photos in ethanol; 101 dorsal, 102 ventral, 103 frontal, 104 lateral).

FIGURES 105 – 108. Cebrennus laurae spec. nov., holotype male from Canary Islands. 105 – 106 Left male palp (105 ventral, 106 retrolateral); 107 Cheliceral dentition, ventral; 108 Eye arrangement, dorsal. DE—distal part of embolus, here developed as coil, K—embolic kink, PE—proximal part of embolus, RTA—retrolateral tibial apophysis.