Cladiscus obeliscus Lewis, 1892

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 : 476-480

Cladiscus obeliscus Lewis, 1892

( Figs 1 , 14, 15 , 27, 34, 40–51, 119–120, 126)

[Japanese name: Hoso-kakkoumushi]

Cladiscus obeliscus Lewis, 1892: 185 [original description]. LOΗDΕ (1900): 16 [listed]; CORΗΑΜ (1903): 332 [noted, faunistics]; S CΗΕΝΚLΙΝG (1906): 247 [noted]; S CΗΕΝΚLΙΝG (1910): 9 [listed]; CORΡORΑΑL +|VΑΝ DΕR WΙΕL (1949): 197 [key to species]; CORΡORΑΑL (1950):22 [listed]; NΑΚΑΝΕ (1963):182 [noted,incl.pl.91, figs 22a,b]; MΙYΑΤΑΚΕ (1985): 152 [noted, incl. pl. 24, fig. 20].

Cymatodera strangulata Kiesenwetter, 1879 (nec Chevrolat, 1843): 314 [original description]. LΕ WΙS (1895): 122 [synonymized].

Type locality. Japan, Honshu and Kyushu (after LΕ WΙS 1892).

Specimens examined. TAIWAN: NΑΝτOU COUΝτ Y: Nanshanshi, Renai Township, 29.vii.1968, 1 ♀, K. Samamoto leg. ( EUMJ). TΑIτUΝG COUΝτ Y: Jinping Forest Road, Chihshang Township, 19.vi.2011, 1 ♁, J. Samasako leg. ( EUMJ). PIΝGτUΝG COUΝτ Y: Mt. Dahanshan, alt. ca. 1,500 m, Chunrih Township, 2.vi.2013, 1 ♁, H. Murakami leg. ( EUMJ). JAPAN: HOĸĸΑIDô P REFECτURE: Fonyu, Rubeshibe, Kitami-shi, 9.viii.1918, 1 ♀, M. Suzuki leg. ( KUMJ). FUĸUI P REFECτURE: Kurokawa-rindô, alt. ca. 500 m, Tsuruga-shi, 25.viii.2003, 1 ♁, M. Hasegawa leg. ( EUMJ). KΑΝΑGΑ WΑ P REFECτURE: Ôwakudani, Hakone-machi, 4.vii.1984, 1 ex., H. Soshitomi leg. ( EUMJ). NΑGΑΝO P REFECτURE: Tobira Spa, 30.vii.1973, 1 ♀, S. Hisamatsu leg.( EUMJ). MIE P REFECτURE: Misugi-mura, 16.vii.1955, 1 ex., M. Satô leg. ( EUMJ). K Y ôτO P REFECτURE: Kifuse, 6.viii.1980, 1 ♁, K. Morimoto leg. ( KUMJ). H Y ôGO P REFECτURE: Mt. Hyounosen,Sabu-shi, light trap, 1.viii.2015, 1 ex., S. Hisasue leg. ( EUMJ). TOττO RI P REFECτURE: Mt. Daisen, 27–28. vii.1976, 1 ex. S. Notsu leg. ( EUMJ). TOĸU SΗIΜΑ P REFECτURE: Minaminoma, Kamiyama-chô, 20.vii.1952, 1 ♁, S. Miyamoto leg. ( KUMJ); Fukuwara, Kamikatsu-chô, 7.viii.1953, 1 ♁, M. Hirai leg. ( HUMJ); Mt. Mimune, Higashi-Iya, 2–3.viii.1969, 1 ♁, S. Kinoshita leg. ( EUMJ). EΗIΜE P REFECτURE: Mt. Shiratsue, Tôon-shi, 25.vii.1972, 1 ♁, S. Kinoshita leg. ( EUMJ); Mt. Saragamine, Tôon-shi, 2.viii.1980, 3 ♁♁, S. Seiyama leg. ( EUMJ); Akanma, Uwa-chô, 23.vii.1994, 1 ♁, M. Sakai leg. ( EUMJ); Onigajô, Uwajima-shi, 8.viii.1994, 1 ex., H. Tanabe leg. ( EUMJ); Sokono, Nishidani, Kumakôgen-chô, 15.vii.1994, 2 ♀♀, M. Sakai leg. ( EUMJ), 15–16.vii.1994, 1 ♀, Lizhen Li leg. ( EUMJ); Komi, Nishidani, Kumakôgen-chô, 1 ♀, M. Mino leg. ( EUMJ), 1 ♁, K. Okada leg., 2 ♁♁, N. Ohbayashi leg. ( EUMJ); Odamiyama, Uchiko-chô, 1 ♁, 23.vii.1967, S. Hori leg. ( EUMJ), 2 exs, 3 ♁♁ 2 ♀♀, E. Samamoto leg. ( EUMJ), 20.viii.1994, 1 ♀, 28.vii.1994, 1 ♁ 1 ♀ ( EUMJ), 30.vii.1994, 1 ♁, M. Kawanabe leg. ( EUMJ), 7.vii.1996, 1 ♀, H. Ono leg. ( EUMJ), 9.vi.1996, 1 ♁ 1 ♀, M. Shiraishi leg. ( EUMJ), 12.viii.1996, 2 ♁♁ 1 ♀, S. Sano leg. ( EUMJ); Oino-machi, Matsuyama-shi, 1 ♁, 5.viii.2000, J. Ogawa leg. ( EUMJ); Kômo-misaki, Nishiumi-machi, 30.vi.2004, 1 ♁, J. Ogawa leg. ( EUMJ), 18.vii.2005, 1 ♀ ( EUMJ); Wakimizu, Tôon-shi, 26.vii.2006, 1 ♀, K. Takasuka leg. ( EUMJ); Mt. Takanawa, Matsuyama-shi, alt. ca. 970 m, 5.viii.2012, M. Hasegawa leg. ( EUMJ). Kô CΗI P REFECτURE: Susuhara-chô, 15–16.vii.1994 ,3 ♁♁ 2♀♀, M. Kawano leg. ( EUMJ); Ashizuri-misaki, Tosashimizu-shi, 16.vi.2013, 1 ex., R. Okano leg. ( EUMJ); Nuno, Tosashimizu-shi, 12.vii.1987, 1 ♁, M. Sakai leg. ( EUMJ). FUĸUOĸΑ P REFECτURE: Mt. Inugatake, Buzen-shi, 14.vii.1938, 1 ♁, Hori, Kawahara & Sasumatsu leg. ( KUMJ); Samaharu, Ônohara, Ukiha-shi, 17.iv.1956, 1 ♀, N. Cyôtoku leg.( HUMJ). ÔIτΑ P REFECτURE: Mt. Sobosan, 25.vii.1978, 1 ♁, H. Miyama leg. ( EUMJ). KΑGO SΗIΜΑ P REFECτURE: Kirishima-shi, 25.vii.1971, 1 ♁, T. Nakane leg. ( HUMJ), 26.vii.1971, 3 ♁♁, 28.vii.1971, 1 ♁ ( HUMJ). Ôsumi Islands: Tangega-shima, Nogi, Nishinoomote, 10.vii.1974, 2 ♁♁, S. Hisamatsu leg. ( EUMJ). Tokara Islands : Nakano-shima, vi.1953, 1 ♁, S. Miyamoto leg. ( HUMJ), 25.vi.1962, 1 ♀, H. Sokoyama leg. ( EUMJ).

Differential diagnosis. This species is similar to C. pallidicornis Corporaal & van der Wiel, 1949 , but it is distinguished by the following characters: head black; elytra wholly black; EL/PL 4.36–5.15 (4.87) in male, 4.02–4.45 (4.28) in female; apical margin of male pygidium ( Fig. 41 ) round; apical margin of female ventrite VI ( Fig. 45 ) almost straight; phallus and tegmen ( Figs 46–48 ) symmetrical; base of MO with a flattened sclerite plate ( Fig. 120 ).

Supplementary description. Male ( Fig. 1 ). Head, antennomeres III to XI, elytra and legs brownish black; antennomeres I and II, pronotum brownish red; pronotum sometimes largely brownish black.

Antennae ( Fig. 14 ) 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. 34 ) long; prosternal process not extending contact point of postcoxal projections. Elytra with rows of deep, large, asetigerous punctures in basal 4/5; apical margins gently finely indented. Mesoventrite with sparse setigerous punctures except for central portion. Metaventral anterior process short. Metendosternite ( Fig. 40 ) without furcal laminae; process extending anteriorly, bifurcated at apex; furcal arms extending straight.

Protibiae ( Fig. 27 ) widening from basal 1/3 to apex; meso- and metatibiae almost straight. Tibial spur formula 0–0–0.

Apical margin of abdominal ventrite V broadly and slightly emarginated. Pygidium ( Fig. 41 ) rounded posteriorly, with long struts.Apical margin of ventrite VI ( Fig. 42 ) almost straight. Spicular fork ( Fig. 43 ) with intraspicular plate, which is 1/3 of spicular fork.

CM ( Figs 46–48 ) without spines, 1/2 as long as tegmen. Tegmen 1/2 as long as phallus, flattened, apically widening. Phallus flattened, pointed at apex.

Female. Similar to male, but EyD/EyW 3.18–4.63 (3.57); antennae ( Fig. 15 ) relatively shorter; apical margin of abdominal ventrite V truncated broadly and deeply in middle.

Apical margin of pygidium ( Fig. 44 ) almost straight; struts short. Apical margin of ventrite VI ( Fig. 45 ) almost straight; apodeme 2/3 as long as ventrite VI.

Spermatheca ( Fig. 119 ) sclerotized; Sc ( Fig. 120 ) flattened. CPr ( Figs 49–51 ) distally trifurcate; central and ventrolateral processes large, equal in size; dorsolateral process relatively short.

Measurements and ratios. Male (n Y 6): BL: 5.41–6.12 (5.89) mm; PL: 1.32–1.50 (1.45) mm; PWA: 0.82–1.00 (0.91) mm; PWM: 0.44–0.50 (0.47) mm; PWB: 0.64–0.74 (0.71) mm; EL: 4.09–4.64 (4.44) mm; EW: 1.00–1.18 (1.13) mm; EyD: 0.54–0.68 (0.60) mm; EyW: 0.22–0.26 (0.25) mm; EL/PL: 4.36–5.15 (4.87); EW/PWA: 1.16–1.29 (1.24); EW/PWM: 2.27–2.68 (2.43); EW/PWB: 1.56–1.69 (1.60); PWA/PWB: 1.22–1.35 (1.29); PWA/PWM: 1.80–2.17 (1.96); PWB/PWM: 1.40–1.61 (1.52); EyD/ EyW: 2.15–2.83 (2.44). Female (n Y 6): BL: 5.12–6.79 (5.86) mm; PL: 1.30–1.54 (1.47) mm; PWA: 0.86–1.22 (1.03) mm; PWM: 0.42–0.56 (0.48) mm; PWB: 0.62–0.84 (0.72) mm; EL: 3.83–5.27 (4.39) mm; EW: 0.98–1.28 (1.09) mm; EyD: 0.60–0.82 (0.69) mm; EyW: 0.16–0.24 (0.20) mm; EL/PL: 4.02–4.45 (4.28); EW/PWA: 1.00–1.14 (1.07); EW/PWM: 2.00–2.52 (2.28); EW/PWB: 1.41–1.58 (1.53); PWA/PWB: 1.39–1.46 (1.43); PWA/PWM: 1.92– 2.35 (2.14); PWB/PWM: 1.32–1.61 (1.49); EyD/EyW: 3.18–4.63 (3.57).

Distribution ( Fig. 126 ). Japan: Hokkaidô, Honshû, Shikoku, Kyushu, Nakano-shima, Tanega-shima (new record); Taiwan (new record); India (CORΗΑΜ 1903).

Remarks. This species was recorded from the southeastern islands of Japan, Amami-Oshima and Ishigaki-jima (NΑΚΑΜURΑ 1986), Iriomote-jima (T SUCΗΙDΑ +| SΑΚΑΙ 2015), Sonaguni-jima (I CΗΙΚΑWΑ 2008). Considering the similarity between this species and C. pallidicornis , all previous records need to be reviewed in the future and are not considered for the distribution data in this paper.

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 40–51. Metendosternite, terminal parts and genitalia of Cladiscus obeliscus Lewis, 1892 (40–43, 46–48, male; 44, 45, 49–51, female). 40 – metendosternite; 41, 44 – pygidium; 42, 45 – ventrite VI; 43 – spicular fork; 46–48 – male genitalia in lateral (46), ventral (47), and dorsal (48) views; 49–51 – apices of ovipositor in lateral (49), ventral (50), and dorsal (51) 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.