Psechrus taiwanensis Wang & Yin, 2001

Figs 65a–c, 89j, 92j

Psechrus taiwanensis Wang and Yin 2001: 340, figs 29–30 (Description of ♀, illustration of ♀). [Holotype ♀ (SB 238) from TAIWAN (‘Formosa’); A.P. Holst leg. 1893–1894; NHM 1894•7•11•2, examined]. Ono 2009: 140, figs 2.2.24.1–3 (Non description & illustration of ♀, misidentified, see P. clavis sp. nov.). Yoshida 2009: 7, figs 1–7 (Non description & illustration of ♂ and ♀, misidentified, see P.clavis sp. nov.).

Note on holotype: In an ornithological publication La Touche (1895) stated that A.P. Holst —also an ornithologist— stayed mainly in the Southern part of Formosa (Taiwan) and about ten days in Kamana. This was a former station of English missionaries, presently Cishan in Tainan county. Possibly he had collected the female Psechrus specimen there.

Psechrus torvus — Lee 1966: 18, figs 3e–g (Description of ♂ and ♀, illustration of ♂ and ♀, misidentified). Hu 1984: 57, figs 51.1–3 (Description of ♂ and ♀, illustration of ♂ and ♀ after Lee 1966, misidentified).

Psechrus sinensis — Levi 1982: 123, figs 34–39, ad part, figs 36–39 misidentified (Description of ♀, figs 38–39: illustration of ♀).

Revised diagnosis (see also diagnosis for sinensis -group above). Female very similar to P. kenting in having a relatively broad median septum (MS) (slightly broader than long) (Fig. 65a), narrow and curved initial sections of copulatory ducts (CD) and the bulbous sections of CD in contact with the receptacula (Fig. 65b). Distinguished by the posteriorly broader MS (Fig. 65a), the slightly longer bulbous sections of CD exhibiting a small bulge anteriorly and the spermathecal heads with longer stalks. Additionally, in P. taiwanensis receptacula partly covered by CD (Fig. 65b).

Description. Male: unknown.

Female:

Body and eye measurements. Carapace length 9.6, carapace width 6.6, anterior width of carapace 3.9, opisthosoma length 12.5, opisthosoma width 6.1. Eyes: AME 0.48, ALE 0.51, PME 0.50, PLE 0.51, AME–AME 0.27, AME–ALE 0.08, PME–PME 0.35, PME–PLE 0.45, AME–PME 0.69, ALE–PLE 0.53, clypeus height at AME 1.37, clypeus height at ALE 1.30.

Cheliceral furrow with three promarginal and four retromarginal teeth.

Measurements of palp and legs. Leg formula: 1243. Palp: 11.0 [3.9, 1.6, 2.0, 3.5]; Legs: I 52.8 [13.9, 4.1, 14.6, 14.1, 6.1], II 42.2 [12.3, 3.7, 11.0, 10.7, 4.9], III 29.8 [9.1, 2.8, 6.9, 7.5, 3.5], IV 41.0 [12.1, 3.2, 10.2, 10.5, 5.0].

Palpal claw with 16 teeth.

Spination. Palp: 141, 110, 1101, 1014; legs: femur I 646, II 546, III 545, IV 544; patella I–IV 000; tibia I–II 3038, III 3036, IV 3037{30310}; metatarsus I–III 3035, IV 3037.

Copulatory organ (see also diagnosis and general description of sinensis -group). Epigynal muscle sigilla and slit sense organs outside epigynal field (EF), but close by (Fig. 65a). As well as in P. kenting receptacula clearly smaller than bulbous sections of CD (Fig. 65b).

Colouration of female (see also description for sinensis -group and Psechrus). Median bands on carapace not serrated. Lateral bands very narrow (ca. 0.3 diameter of PME). Light longitudinal line ventrally on opisthosoma broken subdistally and medium-sized to broad. If measured centrally on opisthosoma, its width is ca. 0.7 the width of one half of the cribellum. Distal patch broader than main section.

Remarks: Lee (1966) reported P. torvus from Taiwan. According to his illustrations (Lee 1966, figs 3e–g) the specimens he had examined were definitely not P. torvus and might be P. taiwanensis . Unfortunately, there is no statement about deposition of the respective material. Since his illustrations are not really informative (too small, details of embolus and conductor of bulb not recognisable, vulva not illustrated) it cannot be clarified if he examined P. taiwanensis . According to his illustration of the epigyne (fig. 3.f) it is at least more likely that it was P. taiwanensis than P. clavis sp. nov. or P. kenting . The two latter species are also distributed throughout Taiwan.

Distribution. Taiwan (Fig. 97).