Nesticella foelixi, Grall & Jäger, 2016

Grall, Elena & Jäger, Peter, 2016, Four new species of the spider genus Nesticella Lehtinen & Saaristo, 1980 from Laos, Thailand and Myanmar and the first description of the male of Nesticella yui Wunderlich & Song, 1995 with a proposed new diagnostic character for the family Nesticidae Simon, 1894 (Arachnida, Araneae), Zootaxa 4085 (2) : -

Nesticella foelixi new species

Figs 18–19 , 28 , 40

Type material. Holotype male. LAOS: Bolikhamsay Province: Lak Sao , 18°12 ' 41.6"N, 104°50 ' 26,6"E, 551 m elevation, cool valley, bed of a stream, dry, at day, P. Jäger & S. Bayer leg. by sieving, 10.11.2009 ( SMF).

Etymology. The species name honours our dear colleague Rainer Foelix who provided excellent photographs of the so-called “pipette setae” for this study. Moreover, his text book on the biology of spiders is one of the famous books which is known worldwide and piqued the second author’s curiosity about spiders; noun (name) in genitive case.

Diagnosis. Nesticella foelixi n. sp. can be easily recognized from all Nesticella species by the spoon-shaped part of the terminal apophysis and the pliers-shape dorsal process of the paracymbium ( Fig. 18 ).

Description. Male (holotype). Total length 1.80; cephalothorax 0.90 long, 0.80 wide; abdomen 1.00 long, 0.70 wide. Eye measurements: AME 0.04; ALE 0.09; PME 0.09; PLE 0.09; AME–AME 0.04; AME–ALE 0.01; PME–PME 0.04; PME–PLE 0.02; AME–PME 0.04; ALE–PLE 0.00; clypeus–AME 0.18; clypeus–ALE 0.12. Leg formula: I, IV, II, III; measurements of palp and legs: palp: 1.18 (0.39, 0.19, 0.18, 0.42); I: 4.84 (1.40, 0.38, 1.30, 1.20, 0.56); II: 3.96 (1.14, 0.34, 1.05, 0.92, 0.51); III: 2.94 (0.84, 0.29, 0.68, 0.63, 0.50); IV: 4.41 (1.30, 0.35, 1.23, 0.97, 0.56).

Cephalothorax yellowish-brown with black pattern between fovea and eyes and lateral blackish pattern. Abdomen light yellow with paired dark spots, posterior pairs fused, laterally dark in anterior half. White spot in front of anal tubercle. Legs white, Fe with one and Ti with two black bands ( Fig. 28 ).

Palp as in diagnosis. Embolus strongly developed and thickened. Paracymbium bifurcate. Dorsal process in ventral view pliers-shaped. In retrolateral view ventral branch of the dorsal process emarginate. Ventral process in ventral view flat. Distinct terminal apophysis, overlap the conductor considerably in retrolateral view.

Female. Unknown.

Distribution. Known only from the type locality.

Figures

FIGURE 40. Map with distributional records of Nesticella spp. Blue triangle— N. yui, green squares— N. beccus new species, brown stars— N. laotica new species, red circle— N. foelixi new species, black diamond— N. michaliki new species.

FIGURES 18 – 19. Nesticella foelixi new species. 18 – 19, Male palp (18, ventral; 19, retrolateral).

FIGURES 24 – 32. Nesticella new species, habitus, dorsal. 24 – 25, Nesticella yui; 26 – 27, Nesticella beccus n. sp.; 28, Nesticella foelixi n. sp.; 29 – 30, Nesticella laotica n. sp.; 31 – 32, Nesticella michaliki n. sp. (24, 26, 28, 29, 31 male, 25, 27, 30, 32 female).