Psechrus kenting Yoshida, 2009

Bayer, Steffen, 2012, The lace-sheet-weavers — a long story (Araneae: Psechridae: Psechrus), Zootaxa 3379 (1), pp. 1-170 : 117-118

publication ID	https://doi.org/ 10.11646/zootaxa.3379.1.1
DOI	https://doi.org/10.5281/zenodo.5255924
persistent identifier	https://treatment.plazi.org/id/D0272654-FFF4-5836-FF20-29E3FDF2427D
treatment provided by	Felipe
scientific name	Psechrus kenting Yoshida, 2009
status

Treatment

Psechrus kenting Yoshida, 2009 View in CoL

Figs 64a–e View FIGURES 64 , 82c View FIGURES 82 , 89i View FIGURES 89 , 92i View FIGURES 92

Psechrus kenting Yoshida 2009: 9 View in CoL , figs 11–13 ( Description GoogleMaps 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 View FIGURES 64 , 65a View FIGURES 65 ), narrow and curved initial sections of copulatory ducts (CD) and the bulbous sections of CD in contact with the receptacula ( Fig. 64b,e View FIGURES 64 , 65b View FIGURES 65 ). Distinguished by the posteriorly narrower MS ( Figs 64a,d View FIGURES 64 ), the slightly shorter bulbous sections of CD and the spermathecal heads (SH) with shorter stalks ( Figs 64b,e View FIGURES 64 ).

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 View FIGURES 64 ). Receptacula clearly smaller than bulbous sections of CD ( Fig. 64b View FIGURES 64 ).

Colouration of female (see also description for sinensis -group and Psechrus ). Median bands on carapace slightly serrated. Lateral bands absent ( Fig. 82c View FIGURES 82 ). 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 View FIGURES 64 ) 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 View FIGURES 64 ). Spermathecal heads directed anterio-medially in holotype ( Fig. 64b View FIGURES 64 ), medially in SB 618 ( Fig. 64e View FIGURES 64 ).

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 View FIGURES 64 , 89i View FIGURES 89 ) 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 View FIGURE 97 ).