Cladiscus pallidicornis, Corporaal & van der Wiel, 1949

Murakami, Hiroyuki, 2020, Review of the genus Cladiscus (Coleoptera: Cleridae) from Japan and Taiwan, with descriptions of two new species, Acta Entomologica Musei Nationalis Pragae 60 (2), pp. 475-492 : 485-486

Cladiscus pallidicornis

Corporaal & van der Wiel, 1949

( Figs 5 , 21, 22 , 31, 38, 83–94, 121, 123–125, 126)

[Japanese name: Taiwan-hoso-kakkoumushi]

Cladiscus pallidicornis Corporaal & van der Wiel, 1949: 192 [original description, incl. pl. 1, fig. 15]. CORΡORΑΑL (1950): 23 [listed].

Cladiscus sanguinicollis ( Spinola, 1844) (misidentification): S CΗΕΝΚCΗΕΝΚ-, (1912): 322 [faunistics]; MΙ WΑ (1931): 112 [listed].

Type locality. Taiwan, Shinchiku (Y Hsinchu County) (after CORΡORΑΑL +| VΑΝ DΕR WΙΕL 1949).

Specimens examined. TAIWAN: TΑO Y UΑΝ COUΝτ Y: Syue wu nao, Fuxing Township, 10.vi.2016, 1 ♁, Sulung Lin leg. ( SSCT). TΑIΡEI COUΝτ Y: Wulai, New Taipei City, 17.v.1965, 1 ♀, S.Miyatake leg.( EUMJ). TΑIΝΑΝ COUΝτ Y: Kantoushan, Dongshan District, 14.v.2014, 1 ♁, Jiafong Chen leg. ( SSCT); Nanxi District, 7.v.2017, 1 ♁, Jiamu Chen leg. ( SSCT). NΑΝτOU COUΝτ Y: Aowanda, Renai Township, 5.vi.2108, 3 ♀♀, Sinyan Shih leg.( SSCT);Nanshanshi,Renai Township, 4.vi.1981, 1 ♁, S.Tagawa leg. ( EUMJ);Tsuifeng~Sungkang,alt.ca.2,044~ 2,306 m, 3.vi.1981, 1 ♁, K.Sasagawa leg.( EUMJ). KΑOΗ SIUΝG COUΝτ Y: “Banshoryo-Distr/ Soukutsu (Formosa)/ H. Sauter VI. 1912 ”, “Schenkling/ det.”, 1 ♁ ( SDEI, Fig. 123 ); “Banshoryo-Dist./ Sokutsu VI 1912 ” (handwriting), “Schenkling/ det.”, “ Cladiscus / sanguinicollis/ Spin.” (handwriting), 1 ♁ ( SDEI, Fig. 124 ); “Kosempo/ Formosa/ H. Sauter. V. 1912 ”, “Schenkling/ det.”, 1 ♀ ( SDEI, Fig. 125 ); Mt. Baiyunshan, Jiaxian District, 16.vi.1977, 1 ♁, K. Ushijima leg. ( EUMJ); Liukuei, Renai Township, 27.v.1970, 1 ♀, S. Kiyoyama leg. ( EUMJ); Mt. Tai Suan Shan, Liukuei, Renai Township, 1.vi.1986, 1 ♀, 1 ex., K. Baba leg. ( EUMJ); Tao Nah, Maolin Township, 30. v. 1986, 2 ♁♁ 2 ♀♀, K. Baba leg. ( EUMJ). TΑIτUΝG COUΝτ Y: Jinping Forest Road, Chihshang Township, 19.vi.2011, 1 ♁, J. Samasako leg. ( EUMJ). PIΝGτUΝG COUΝτ Y: Kenting Park, Hengchun Township, 26.v.1969, 1 ♁ 1 ♀, S. Hisamatsu leg. ( EUMJ), 16.vi.1971, 2 ♁♁, S. Miyatake leg. ( EUMJ); Mt. Dahanshan, alt. ca. 1,230 m, Chunrih Township, 2–14.vi.2013, 1 ♁, Fit Trap, K. Sonaka leg. ( EUMJ); Mt. Kaoshihfoshan, Mudan Township, 10.vi.2013, 1 ♁, H. Murakami leg. ( EUMJ), 15.vi.2013, 1 ♀, K.Sonaka leg. ( EUMJ). JAPAN: KΑGO SΗIΜΑ P REFECτURE: Ôsumi Islands: Sakushima,Sakusugi-land, 14.vii.1979, 1 ♀, M.Kotani leg.( EUMJ). Amami Islands: Amami-Ôshima,Samato-son, 25.vi.2008, 1 ♁, M. Matsumura leg. ( MMCJ). OĸIΝΑ WΑ P REFECτURE: Yaeyama Islands: Iriomote-jima, Komi, 1.v.1984, 2 ♁♁, S. Samaya leg. ( HUMJ); Ishigaki-jima, Mt. Maese, 9.v.2008, 1 ♁, Chando Han leg. ( EUMJ), 12.v.2008, 1 ♁ ( EUMJ); Ishigaki-jima, Sarabu, 29.v.2012, 1 ♁, M. Matsumura leg. ( MMCJ); Iriomote-jima, Otomi, 28.iv.1969, 1 ♁, H. Makihara leg. ( KUMJ); Iriomote-jima, Urauchi, 31.v.2011, 1 ♁, M. Matsumura leg. ( MMCJ); Taketomi-jima, 17.iv, 1 ♁, unknown collector and year ( EUMJ); Sonaguni-jima, Iranda, 18.v.2017, 1 ♁, M. Matsumura leg. ( MMCJ); Sonaguni-jima, Sonai, 6–8.vii.1970, 1 ♁, H. Makihara leg. ( KUMJ); Sonaguni-jima, Inbi-dake, 11.vi.2017, 1 ♁, N. & T. Ohbayashi leg. ( EUMJ); Sonaguni jima, Nosoko, 12.vi.2017, 1 ♀, N. & T. Ohbayashi leg. ( EUMJ).

Differential diagnosis. This species is similar to C. obeliscus , but it is distinguished by the following characters: head red; base of elytra reddish; EL/PL 2.72–3.14 (2.94) in male, 2.76–2.94 (2.84) in female; apical margin of male pygidium ( Fig. 84 ) pointed posteriorly in the middle; apical margin of female ventrite VI ( Fig. 88 ) widely emarginated; phallus and tegmen ( Figs 89–91 ) not symmetrical; base of MO with a sagittate sclerite ( Fig. 121 ).

Supplementary description. Male ( Fig. 5 ). Head, pronotum and base of elytra red; antennomeres I and II yellow; antennomeres III to VIII, elytra except for base, and legs brownish black.

Antennae ( Fig. 21 ) weakly serrate; antennomere I claviform; II compact; III cylindrical; IV to X weakly serrate, longer than wide; antennomere XI slightly longer than X.

Pronotum smooth at apex; postcoxal projections ( Fig. 38 ) long; prosternal process not extending contact point of postcoxal projections. Elytra with rows of deep, large, asetigerous punctures in basal 3/4; apical margins finely and gently indented. Mesoventrite densely with setigerous punctures except for central apical portion. Metaventral anterior process short. Metendosternite ( Fig. 83 ) without furcal laminae; process extending anteriorly, tapered; furcal arms almost straight, extending anterolaterally.

Protibiae ( Fig. 31 ) gently widening to apex., weakly curved. Tibial spur formula 0–0–0.

Apical margin of abdominal ventrite V emarginated broadly and slightly. Apical margin of pygidium ( Fig. 84 ) shortly projected posteriorly in middle; struts short. Apical margin of ventrite VI ( Fig. 85 ) almost straight. Spicular fork ( Fig. 86 ) with intraspicular plate, which is 1/3 as long as spicular fork.

CM ( Figs 89–91 ) without fine spines, 1/2 as long as tegmen. Tegmen sinuate in basal 2/3, widest at apex. Phallus curved in lateral views, sinuate in dorsal and ventral views, pointed at apex.

Female. Similar to male, EyD/EyW 3.62–4.50 (3.92); antennae ( Fig. 22 ) relatively shorter; apical margin of abdominal ventrite V truncated broadly and deeply in middle.

Apical margin of pygidium ( Fig. 87 ) slightly emarginated; struts short. Apical margin of ventrite VI ( Fig. 88 ) broadly emarginated; apodeme 2/3 as long as ventrite VI.

Spermatheca weakly sclerotized; Sc ( Fig. 121 ) sagittate. CPr ( Figs 92–94 ) distally trifurcate; central and ventrolateral processes large, equal in size; dorsolateral process relatively short.

Measurements and ratios. Male (n Y 6): BL: 6.29–6.83 (6.54) mm; PL: 1.56–1.74 (1.66) mm; PWA: 1.14–1.34 (1.20) mm; PWM: 0.56–0.62 (0.59) mm; PWB: 0.82–0.90 (0.86) mm; EL: 4.73–5.09 (4.88) mm; EW: 1.26–1.44 (1.34) mm; EyD: 0.68–0.76 (0.72) mm; EyW: 0.26–0.34 (0.30) mm; EL/PL: 2.72–3.14 (2.94); EW/PWA: 1.07–1.16 (1.12); EW/PWM: 2.16–2.36 (2.27); EW/PWB: 1.52–1.60 (1.56); PWA/PWB: 1.36–1.49 (1.40); PWA/PWM: 1.94–2.16 (2.03); PWB/PWM: 1.42–1.50 (1.45); EyD/ EyW: 2.06–2.92 (2.47). Female (n Y 5): BL: 6.39–7.26 (6.91) mm; PL: 1.66–1.90 (1.80) mm; PWA: 1.20–1.36 (1.31) mm; PWM: 0.60–0.66 (0.64) mm; PWB: 0.80–0.94 (0.88) mm; EL: 4.73–5.36 (5.11) mm; EW: 1.28–1.46 (1.38) mm; EyD: 0.90–0.94 (0.92) mm; EyW: 0.20–0.26 (0.24) mm; EL/PL: 2.76–2.94 (2.84); EW/PWA: 1.02–1.09 (1.05); EW/PWM: 1.94–2.29 (2.15); EW/PWB: 1.55–1.60 (1.57); PWA/PWB: 1.43–1.55 (1.50); PWA/PWM: 1.82– 2.19 (2.05); PWB/PWM: 1.21–1.45 (1.37); EyD/EyW: 3.62–4.50 (3.92).

Distribution ( Fig. 126 ). Japan (new record): Saku-shima, Amami-Ôshima, Ishigaki-jima, Iriomote-jima, Taketomijima, Sonaguni-jima; Taiwan (CORΡORΑΑL +| VΑΝ DΕR WΙΕL 1949).

Remarks. S CΗΕΝΚLΙΝG (1912) recorded C. sanguinicollis ( Spinola, 1844) from Taiwan, based on four specimens from ‘Kosempoʼ and ‘Banshoryoʼ, and the species was subsequently listed by MΙ WΑ (1931) without additional records. After close examination, three specimens ( Figs 123–125 ) were found in SDEI, and they all belong C. pallidicornis . Cladiscus sanguinicollis is hence excluded from Taiwanese fauna.

Figures

Fig 126. Distribution map of the species of Cladiscus from Japan and Taiwan.

Figs 1–13. Habitus and head of Cladiscus spp. (1–5, 6, 8, 10, 12, male; 7, 9, 11, 13, female). 1 – Cladiscus obeliscus Lewis, 1892; 2 – C. weyersi Kraatz, 1899; 3 – C. sauteri Schenkling, 1912; 4 – C. terminalis Schenkling, 1912; 5 – C. pallidicornis Corporaal & van der Wiel, 1949; 6, 7, 10, 11 – C. hachijoensis sp. nov. (6, 10, holotype; 7, 11, paratype); 8, 9, 12, 13 – C. liaoi sp. nov. (8, 12, holotype; 9, 13, paratype). Scale bars: 2.0 mm.

Figs 14–26. Antennae (14, 16, 17, 19, 21, 23, 25 – male; 15, 18, 20, 22, 24, 26 – female). 14, 15 – Cladiscus obeliscus Lewis, 1892; 16 – C. weyersi Kraatz, 1899; 17, 18 – C. sauteri Schenkling, 1912; 19, 20 – C. terminalis Schenkling, 1912; 21, 22 – C. pallidicornis Corporaal & van der Wiel, 1949; 23, 24 – C. hachijoensis sp. nov.; 25, 26 – C. liaoi sp. nov.

Figs 123–125. Habitus and labels of Taiwanese specimens of Cladiscus pallidicornis Corporaal & van der Wiel, 1949 deposited in SDEI, previously identified as Cladiscus sanguinicollis (Spinola, 1844) by SCΗΕΝΚLΙΝG (1912).

Figs 83–94. Metendosternite, terminal parts and genitalia of Cladiscus pallidicornis Corporaal & van der Wiel, 1949 (83–86, 89–91, male; 87, 88, 92–94, female). 83 – metendosternite; 84, 87 – pygidium; 85, 88 – ventrite VI; 86 – spicular fork; 89–91 – male genitalia in lateral (89), ventral (90), and dorsal (91) views; 92–94 – apices of ovipositor in lateral (92), ventral (93), and dorsal (94) views.

Figs 119–122. Female reproductive organs (119) and sclerites (120–122). 119, 120 – Cladiscus obeliscus Lewis, 1892; 121 – C. pallidicornis Corporaal & van der Wiel, 1949; 122 – C. hachijoensis sp. nov.

Figs 27–39. Male protibiae (27–33) and prothorax in ventral view (34–39). 27, 34 – Cladiscus obeliscus Lewis, 1892; 28, 35 – C. weyersi Kraatz, 1899; 29, 36 – C. sauteri Schenkling, 1912; 30, 37 – C. terminalis Schenkling, 1912; 31, 38 – C. pallidicornis Corporaal & van der Wiel, 1949; 32, 39 – C. hachijoensis sp. nov.; 33 – C. liaoi sp. nov. Scale bars: 0.5 mm.