Olios jaenicke, Jäger, Peter, 2012

Jäger, Peter, 2012, New species of the spider genus Olios Walckenaer, 1837 (Araneae: Sparassidae: Sparassinae) from Laos, Zootaxa 3228, pp. 61-68 : 63-64

Olios jaenicke spec. nov.

Figs 5-8, 17-23, 27

Type material: Holotype: male, LAOS, Champasak Province, Muang Bachieng, Pakse, Ban Ke , N 15°07'57.4'', E 105°48'54.4'', 99 m altitude, sandy river banks, shrubs, in foliage, 27 November 2009, by night, by hand, P. Jäger & S. Bayer leg. ( SMF, PJ 3234, SD 704 ) .

Etymology. This species is dedicated to the German actor and environmental campaigner Hannes Jaenicke for his activities about and documentaries on threatened animal species and for raising general awareness in the public on such topics. Also for his dedication to the Senckenberg Research Society; name in apposition.

Diagnosis. Medium sized Sparassinae (total length male 10.4). According to the prominent tegular apophysis, the shape and course of the embolus tip as well as the shape of the RTA in the male palp, Olios jaenicke spec. nov. seems to be related to O. scalptor Jaeger and Ono, 2001 from Taiwan. It is distinguished from other Olios spp . by its prominent, long, distally curved tegular apophysis, by the strongly toothed prolateral basal part of embolus, and by the embolus tip without modifications and running from dorsal to ventral side in conductor, and from O. scalptor by the absence of a distinct, curved and pointed basal embolic apophysis (Figs 5-8).

Description. Male: PL 4.9, PW 4.5, AW 2.5, OL 5.5, OW 3.6. Eye diameters and interdistances: AME 0.38, ALE 0.27, PME 0.27, PLE 0.25, AME-AME 0.26, AME-ALE 0.18, PME-PME 0.48, PME-PLE 0.50, AME-PME 0.39, ALE-PLE 0.30, clypeus AME 0.17, clypeus ALE 0.21. Palp and leg measurements: palp 6.9 (2.1, 0.8, 1.2, -, 2.8), I 24.9 (6.9, 2.6, 6.9, 6.7, 1.8), II 27.3 (7.5, 2.8, 7.7, 7.3, 2.0), III 18.6 (5.5, 2.1, 5.0, 4.5, 1.5), IV 21.2 (6.0, 2.1, 5.7, 5.7, 1.7). Leg formula 2143. Spination of palp and legs: palp 131, 121 (bristles), 0011; femora I-III 323, IV 322 (middle retrolateral spine smaller); patellae I 000, II-III 100, IV 100/000; tibiae I-III 2124, IV 21 (0)24; metatarsi I-III 2024, IV 3026. Metatarsus IV distally with small ventral spine, few bristles and scopula. Scopulae on tibia and tarsus I-IV wide, largest width of scopula at metatarsus II: 1.0; metatarsus II width: 0.3. Chelicera with 2 anterior, 5 posterior teeth, and without denticles.

Palpus as in diagnosis. Embolus arising in a 6- o’clock-position from tegulum; conductor strong and concave in ventral view, arising medially in distal half of tegulum, prolaterad. Tegular apophysis arising proximo-retrolaterally from tegulum. RTA tapered, its prolateral margin concave. Dorsal cymbium with scopula in distal half and with longer apical bristle-like hairs. Cymbium tip triangular, tegular appendages extending laterally beyond cymbial margin (Figs 5 -8).

Colouration in ethanol (Figs 21-23). Yellowish-brown with dark markings on distal legs, Chelicerae and OS. Dorsal shield of prosoma without pattern, with long fovea only slightly marked, dark at anterior eye row. Sternum, ventral coxae, labium and gnathocoxae pale yellowish-brown, labium with distal white lip. Chelicerae dark brown with distal half darker. Legs and palp yellowish-brown, distal segments darker, especially tarsus and metatarsus; patella and tibia indistinctly mottled. Dorsal opisthosoma with distinct dark reddish-brown pattern consisting of patches beside heart fusing in posterior half to transversal connected bars; lateral opisthosoma with strong irregular pattern of partly elongate spots, partly fusing; ventral opisthosoma with tiny dots in median part, appearing slightly darker than part in front of epigastric furrow. For colouration of live specimen see Figs 17-20.

Female: Unknown.

Distribution. Known only from the type locality (Fig. 27: 4).