Cladiscus sauteri Schenkling, 1912

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 : 481-483

Cladiscus sauteri Schenkling, 1912

( Figs 3 , 17, 18 , 29, 36, 59–70, 126)

Cladiscus sauteri Schenkling, 1912: 322 [original description]. CORΡORΑΑL +| VΑΝ DΕR WΙΕL (1949): 196 [key to species]; CORΡORΑΑL (1950): 23 [listed].

Type locality. Taiwan, Kosempo (Y Jiaxian District, Kaohsiung County) and Banshoryo (Y Chishan District, Kaohsiung County).

Type material. SYΝΤYΡΕ S: 1 ♀, ‘Kosempo | Formosa | H. Sauter VI. 11’, ‘Schenkling | det.’, ‘Syntypus’, ‘ Cladiscus | sauteri Schklg | Type’, ‘DEI Coleoptera | L 200092’( SDEI); 1 ♀, ‘Banshoryo Distr | Sokutsu ( Formosa) | H Sauter VI. 1912 ’, ‘Schenkling det.’, ‘Syntypus’, ‘DEI Coleoptera | L 200093’ ( SDEI). I have examined these specimens based on the photos available in Integrated Insect Types Database of Taiwanese species at http://twinsecttype.nmns.edu.tw/species/orig/?id Y3378F3D7ADCCDA- 51CA21CFDB96EB737B.

Additional specimens examined. TAIWAN: YILΑΝ COUΝτ Y: Sing tzu ling, Toucheng Township, 21.vi.2016, 1 ♁, Sulung Lin leg. ( SSCT). TΑO Y UΑΝ COUΝτ Y: Mt. Lalashan, Fusing Township, 3.vii.1983, 1 ♁, H. Takizawa leg. ( KSCJ). TΑIΡEI COUΝτ Y: Wulai, New Taipei City, 12.vi.1968, 1 ♁, M. Tomokuni leg. ( EUMJ). NΑΝτOU COUΝτ Y: Jihyuehtan, Puli Township, 27.v.1981, 1 ♀, S. Tagawa leg. ( EUMJ); Nanshanshi, Renai Township, 6.vi.1985, 1 ♁, T. Shirozu leg. ( EUMJ), 17.v.1969, 2 ♁♁, S. Hisamatsu leg. ( EUMJ); Mt. Kuantaoshan, Puli Township, 5.v.1983, 1 ♁, K. Kusama leg. ( KSCJ), 2.vi.1995, 1 ♁, unknown collector ( KSCJ), same locality, 18.iv.2015, 1 ♁, Sinyan Shih leg. ( SSCT), 3.v.2015, 1 ♁ ( SSCT); Nanfeng, Taoyuan Township, 19.–21.v.2006, 1 ♁, M. Ito leg. ( KSCJ). MIΑOLI COUΝτ Y: Mt.Shihtoushan, 4. vi.1976, 1 ♁, H. Makihara leg. ( KUMJ). TΑIΝΑΝ COUΝτ Y: Meiling, Nanxi District, 28.v.2017, 1 ♁, Uitsiann Ong leg. ( SSCT). KΑOΗ SIUΝG COUΝτ Y: Too Nah, Maolin Township, 2.vii.1986, 1 ♀, K. Baba leg. ( EUMJ); Liukuei, Renai Township, 29.iv.–8.v.1982, 1 ♀, H. Takizawa leg. ( KSCJ).

Differential diagnosis. This species is easily distinguished from other members by the following characters: antennae stout and flabellate in male ( Fig. 17 ), widely serrate ( Fig. 18 ) in female.

Redescription. Male ( Fig. 3 ). Head and pronotum red; antennae, elytra and legs brownish.

Antennae ( Fig. 17 ) longer than total length of head and pronotum combined; antennomere I swollen and bent; II compact; III to X flabellate; XI fusiform.

Pronotum with transverse impressions at apex; postcoxal projections ( Fig. 36 ) short; prosternal process long, completely separating postcoxal projections. Elytra with rows of deep, large, asetigerous punctures in basal 5/6; apical margins not indented. Mesoventrite with dense setigerous punctures except for central apical portion. Metaventral anterior process shorter and wider than mesoventral posterior process. Metendosternite ( Fig. 59 ) without furcal laminae; process extending anteriorly, tapered; furcal arms extending anterolaterally, sinuous at apex.

Protibiae ( Fig. 29 ) gently widening from basal 1/3 to apex., weakly curved. Tibial spur formula 2–2–2.

Apical margin of abdominal ventrite V broadly emarginated. Pygidium ( Fig. 60 ) rounded posteriorly, with short struts. Apical margin of ventrite VI ( Fig. 61 ) emarginated. Spicular fork ( Fig. 62 ) with intraspicular plate, which is 1/3 of spicular fork.

CM ( Figs 65–67 ) with fine spines, 1/3 as long as tegmen. Tegmen shorter than phallus; phallobase dorsally incised; phallobasic struts not reaching phallobasic apodeme, which is 3/4 as long as tegmen and divaricated at apex. Phallus flattened, widest at apical 1/3, rounded at apex.

Female. Similar to male, but EyD/EyW 2.53–3.31 (3.06); antennae ( Fig. 18 ) widely serrate; central portion of metaventrite with pair of bundles of elongate setae-like trichobothria; protibiae slenderer; apical margin of abdominal ventrite V truncated broadly and deeply in middle.

Apical margin of pygidium ( Fig. 63 ) almost straight; struts short. Ventrite VI ( Fig. 64 ) rounded posteriorly, with apodeme 2/3 as long as ventrite VI.

Spermatheca membranous; Sc lacking. CPr ( Figs 68–70 ) distally trifurcate; central process large; dorsolateral and ventrolateral processes relatively short.

Measurements and ratios. Male (n Y 9): BL: 8.84–11.65 (10.29) mm; PL: 1.75–2.38 (2.10) mm; PWA: 1.28–1.85 (1.63) mm; PWM: 0.80–1.18 (0.92) mm; PWB: 1.10.–1.45 (1.25) mm; EL: 7.09–9.27 (8.19) mm; EW: 1.73–2.30 (1.96) mm; EyD: 0.75–1.13 (0.97) mm; EyW: 0.43–0.70 (0.50) mm; EL/PL: 3.59–4.47 (3.90); EW/PWA: 1.10–1.37 (1.21); EW/PWM: 1.91–2.39 (2.15); EW/PWB: 1.49–1.70 (1.57); PWA/PWB: 1.16–1.40 (1.31); PWA/PWM: 1.57–2.00 (1.79); PWB/PWM: 1.23–1.52 (1.37); EyD/EyW: 1.61–2.28 (1.96). Female (n Y 4): BL: 10.43–12.09 (11.15) mm; PL: 2.05–2.45 (2.22) mm; PWA: 1.83–2.08 (1.92) mm; PWM: 0.95–1.08 (1.02) mm; PWB: 1.33–1.48 (1.40) mm; EL: 8.18–9.64 (8.93) mm; EW: 1.98–2.20 (2.09) mm; EyD: 1.08–1.33 (1.22) mm; EyW: 0.38–0.43 (0.40) mm; EL/PL: 3.64–4.41 (4.04); EW/PWA: 1.05–1.16 (1.09); EW/PWM: 1.98–2.11 (2.05); EW/PWB: 1.46–1.52 (1.49); PWA/PWB: 1.31–1.42 (1.37); PWA/PWM: 1.81–1.97 (1.88); PWB/ PWM: 1.35–1.39 (1.37); EyD/EyW: 2.53–3.31 (3.06).

Distribution ( Fig. 126 ). Taiwan.

Remarks. This species was unintentionally characterized based on females in the original description (S CΗΕΝΚLΙΝG 1912) and a key to the species (CORΡORΑΑL +| VΑΝ DΕR WΙΕL 1949).

S CΗΕΝΚLΙΝG (1912) mentioned that this species was similar to C. obeliscus and C. weyersi in black head and the punctures of elytra disappearing before apex. In contrast to other Taiwanese and Japanese species, and some species from south-east Asia of Cladiscus , C. sauteri has 2–2–2 tibial spur formula. Although tibial spur formula is often genus-specific in Cleridae , I assign C. sauteri into Cladiscus because of the characters of the apex of the female ovipositor which are shared with other Japanese and Taiwanese Cladiscus species.

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 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.

Figs 59–70. Metendosternite, terminal parts and genitalia of Cladiscus sauteri Schenkling, 1912 (59–61, 65–67, male; 62, 63, 68–70, female). 59 – metendosternite; 60, 63 – pygidium; 61, 64 – ventrite VI; 62 – spicular fork; 65–67 – male genitalia in lateral (65), ventral (66), and dorsal (67) views; 68–70 – apices of ovipositor in lateral (68), ventral (69), and dorsal (70) views.