Sesieutes thakek Jäger, 2007, spec. nov.
Creators: name: Jäger, Peter
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Liocranidae
Sesieutes
Sesieutes thakek

description: <i>Sesieutes thakek</i> spec. nov. Figs. 73-82 Type <b>material</b>. Male holotype (SMF 56635), Laos, Khammouan Prov., 9.5 km NE Thakek (L34), 159 m altitude, N 17°26.936', E 104°52.499', leaf litter in front of cave, by sieving, P. Jäger &amp; V. Vedel leg. 30.X.2004. Etymology. The species is named after the province capital Thakek (= Muang Khammouan), closely situated to the type locality, noun in apposition. <b>Diagnosis</b>. Medium sized <i>Sesieutes</i> species (5.2 mm body length). Male similar to that of <i>S. schwendingeri</i> Deeleman-Reinhold 2001 (figs. 771-772) according to general arrangement of copulatory organ and colouration, but having base of embolus broader and bent dorsad (Fig. 73; narrower and bent basad in <i>S. schwendingeri</i>), tegulum distinctly pear-shaped (Fig. 74; not that wide basally in <i>S. schwendingeri</i>), and ventral prosomal granulations restricted to the central part of the sternum (Fig. 80; dense granulation in sternum, labium and gnathocoxae in <i>S. schwendingeri).</i> <b>Description.</b> Male. PL 2.6, PW 1.9, AW 1.05, OL 2.6, OW 1.5. Leg II: 8.95 (2.45, 0.85, 2.4, 2.05, 1.2). Spination: femur I 2 pl; tibia I 9 pv, 9 rv, II 8 pv, 7rv, III 1 pv, 1 rv, 1 rl, IV 3 pv, 2 rv, 1 rl; metatarsus I 5 pv, 6 rv, II 5 pv, 5 rv, III 1 pl, 1 pv, 1 rv, 1 rl, IV 2 rv, 1 rl; Femoral spines with small basal tooth and with large, toothed socket (Figs. 81- 82). Leg claws with 4- 5 teeth. Dorsal scutum 0.5 OS length. Chelicerae with three promarginal and 2 small retromarginal teeth (Fig. 80). Embolus arising in 10-o’clock-position, running first distad, then dorsad (Fig. 73), finally ending in a distal coil, with its plane transverse to that of the alveolus; tip of embolus running semi-circular, becoming narrower distally (<i>Fig</i>. 77). Functional conductor short, slightly bent, arising in a 11-o’clock-position (<i>Fig</i>. 74). Tip of embolus resting in conductor in unexpanded pedipalpus (<i>Fig</i>. 77). Subtegulum visible in prolateral view (Fig. 73). Sperm-duct on retrolateral side (Fig. 75) in similar position as in <i>S. schwendingeri.</i> Pedipalpal tibia with retrolateral blunt distal hump and retrolateral basal apophysis, the latter with distinct ridge (Fig. 76). Cymbial scopula similar as in <i>S. schwendingeri,</i> i.e. extending in the distal third to quarter of dorsal cymbium (<i>Fig</i>. 75). Ventral scutum of OS with small bent rim in front of genital opening (<i>Fig</i>. 78). <b>Colour and granulation (</b> in <b>ethanol).</b> Dorsal shield of PS dark reddish brown, with dense and distinct granulations, fovea small, circular, striae less distinct. Sternum brighter reddish brown, with slight radial striae and granulations in the centre, these fading marginally (<i>Fig</i>. 80). Labium and gnathocoxae bright redbrown, with striae and very sparse and small granulations; legs and ventral scutum of OS yellowish brown, with fine granulations, on distal segments less distinct, femora darker. Petiolus anteriorly with ventral median keel. Dorsal OS dark grey with reddish brown scutum, behind that with two white lateral patches, behind those with 4 slightly recurved white chevrons and white patch in front of spinnerets. Ventral OS generally brighter than dorsal side, with lateral rows of small bright patches. Spinnerets with apical segment white, basal segments grey. Female, unknown. <b>Distribution.</b> Known only from the type locality
description: Published as part of <i>Jäger, Peter, 2007, Spiders from Laos with descriptions of new species (Arachnida: Araneae), pp. 29-58 in Acta Arachnologica 56 (1)</i> on pages 48-49, DOI: 10.2476/asjaa.56.29, http://zenodo.org/record/818339
description: {"references": ["Deeleman-Reinhold, C. L. 2001. Forest spiders of South East Asia. With a revision of the sac and ground spiders (Araneae: Clubionidae, Corinnidae, Liocranidae, Gnaphosidae, Prodidomidae and Trochanterriidae). Brill, Leiden, Boston, Koln, 591 pp."]}