Psechrus kenting Yoshida 2009
Creators: name: Bayer, Steffen
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Psechridae
Psechrus
Psechrus kenting

description: Psechrus kenting Yoshida, 2009
Figs 64a–e, 82c, 89i, 92i
Psechrus kenting Yoshida 2009: 9, figs 11–13 (Description of ♀, illustration of ♀). [Holotype ♀ (SB 615) from TAIWAN: Pingtung county: Kenting, ca. N 22°00', E 120°45'; H. Yoshida leg. 13.VII.1977; NMST 8381; Paratypes: 1 ♀, with same data as for holotype; no statement concerning deposition; 1 ♀ (SB 618), TAIWAN: Taitung county: Chihpen spa., ca. N 22°42', E 121°00'; H. Yoshida leg. 17.VII.1977; NMST 8382, all type material examined, except for the paratype ♀ without statement concerning deposition].
Revised diagnosis (see also diagnosis for sinensis -group above). Females very similar to P. taiwanensis Wang & Yin, 2001 in having a relatively broad median septum (MS) (as broad as long, or slightly broader than long) (Figs 64a,d, 65a), narrow and curved initial sections of copulatory ducts (CD) and the bulbous sections of CD in contact with the receptacula (Fig. 64b,e, 65b). Distinguished by the posteriorly narrower MS (Figs 64a,d), the slightly shorter bulbous sections of CD and the spermathecal heads (SH) with shorter stalks (Figs 64b,e).
Description. Male: unknown.
Female (measurements of holotype first, those of paratype in parentheses):
Body and eye measurements. Carapace length 10.1 (7.7), carapace width 6.9 (5.2), anterior width of carapace 4.5 (3.4), opisthosoma length 14.1 (12.5), opisthosoma width 8.3 (7.2). Eyes: AME 0.45 (0.39), ALE 0.55 (0.45), PME 0.54 (0.45), PLE 0.55 (0.46), AME–AME 0.28 (0.18), AME–ALE 0.08 (0.06), PME–PME 0.36 (0.32), PME–PLE 0.55 (0.51), AME–PME 0.88 (0.68), ALE–PLE 0.64 (0.52), clypeus height at AME 1.83 (1.20), clypeus height at ALE 1.78 (1.14).
Cheliceral furrow with three promarginal and four retromarginal teeth.
Measurements of palp and legs. Leg formula: 1243 (1423). Palp: 11.4 (9.6) [4.1 (3.4), 1.7 (1.3), 2.0 (1.8), 3.6 (3.1)]; Legs: I 55.8 (46.0) [15.3 (12.5), 4.2 (3.4), 15.9 (12.6), 14.1 (12.0), 6.3 (5.5)], II 44.6 (36.1) [13.0 (10.0), 4.0 (3.1), 11.7 (9.5), 11.0 (9.3), 4.9 (4.2)], III 30.9 (25.4) [9.2 (7.6), 2.9 (2.4), 7.6 (5.9), 7.7 (6.5), 3.5 (3.0)], IV 44.5 (36.4) [13.5 (10.5), 3.5 (2.8), 11.6 (9.4), 11.0 (9.4), 4.9 (4.4)].
Palpal claw with 14 teeth.
Spination. Palp: 131 (131), 110 (110), 1101{1201} (1101), 1014 (1014); legs: femur I 556 (546), II 556 (546), III 556 (545), IV 376{385} (544{554}); patella I–IV 000; tibia I–II 3038 (3038), III 3038{3036} (2026{2036}), IV 3037{2037} (3036{2036}); metatarsus I–IV 3035 (3035).
Copulatory organ (see also diagnosis and general description of sinensis -group). Epigynal muscle sigilla included in epigynal field (EF), slit sense organs located outside EF (Figs 64a,d). Receptacula clearly smaller than bulbous sections of CD (Fig. 64b).
Colouration of female (see also description for sinensis -group and Psechrus). Median bands on carapace slightly serrated. Lateral bands absent (Fig. 82c). Light longitudinal line ventrally on opisthosoma strongly constricted subdistally and broad. If measured centrally on opisthosoma, its width is 0.7–1.3 the width of one half of the cribellum. Distal part (patch) broader than main section.
Variation of copulatory organs. Median septum in paratype SB 618 anteriorly (Fig. 64d) clearly narrower than in holotype. EF in SB 618 narrower than in holotype. Distance between bulbous sections of CD narrower in SB 618 (Fig. 64e). Spermathecal heads directed anterio-medially in holotype (Fig. 64b), medially in SB 618 (Fig. 64e).
Remarks: This species differs only slightly from P. taiwanensis. The alleged clear differences in epigynal shapes of the holotypes of P. kenting and P. taiwanensis have to be put into perspective as the paratype ♀ SB 618 (Fig. 64d, 89i) of P. kenting shows intermediate charatcer features of median septum. Vulva characters differ just marginally. It cannot be excluded that these differences fall into the range of intraspecific variation of one single species, which would mean that P. kenting should be synonymised with P. taiwanensis. However, according to the material available, there is no evidence for that. More material, also males, from (Southern) Taiwan is necessary to clarify this.
Distribution. Taiwan (Fig. 97).
description: Published as part of Bayer, Steffen, 2012, The lace-sheet-weavers — a long story (Araneae: Psechridae: Psechrus), pp. 1-170 in Zootaxa 3379 (1) on pages 117-118, DOI: 10.11646/zootaxa.3379.1.1, http://zenodo.org/record/6039832