Cladiscus terminalis 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 : 483-485

Cladiscus terminalis Schenkling, 1912

( Figs 4 , 19, 20 , 30, 37, 71–82, 126)

Cladiscus terminalis Schenkling, 1912: 322 [original description]. CORΡORΑΑL +| VΑΝ DΕR WΙΕL (1949): 195 [key to species]; CORΡORΑΑL (1950): 23 [listed].

Type locality. Taiwan, Taihorinsho (Y Talin, Chiayi County).

Type material. HOLOΤYΡΕ: 1 ♁, ‘Taihorinsho | Formosa | H Sauter’, ‘7. X’, ‘Holotypus’, ‘♂’, ‘DEI Coleoptera | L 200094’ ( SDEI). I examined the holotype based on the photos available in Integrated Insect Types Database of Taiwanese species at http://twinsecttype.nmns.edu.tw/species/ orig/?id Y 9CE4F73E4A51DA32414C50E82EFFDFAF

Additional specimens examined. TAIWAN: TΑIΡEI COUΝτ Y: Mt. Sangmingshan, 24.viii.1966, 1 ♁, H. Kamiya leg. ( EUMJ). PIΝGτUΝG COUΝτ Y: Chiupeng, Manchou Township, 16.x.2016, 1 ♁, K. Takahashi leg. ( KSCJ); Mt. Dahanshan, Chunri Township, 13.vi.2015, 1 ♁, Sinyan Shih leg. ( SSCT). NΑΝτOU COUΝτ Y: Musha, Renai Township, alt. 1,700 m, 24–28.viii.2016, 1 ♀, M. Tanaka leg. ( MTCJ).

Differential diagnosis. This species is similar to C. liaoi sp. nov., but distinguished by the following characters: EyD/ EyW 0.68 in male, 1.53 in female; PWA/PWB 1.12–1.24; female antennae ( Fig. 20 ) relatively shorter than male ( Fig. 19 ); apex of elytra round, partly black.

Supplementary description. Male ( Fig. 4 ). Head, pronotum, elytra except for apex yellowish brown; antennae, elytra at apex., and legs brownish black.

Antennae ( Fig. 19 ) longer than total length of head and pronotum combined, antennomeres III to X acutely serrate; XI fusiform, twice as long as X.

Pronotum smooth at apex; tubercles developed in middle; postcoxal projections ( Fig. 37 ) short; prosternal process not extending contact point of postcoxal projections. Elytra with rows of deep, large, asetigerous punctures before apex; apical margins not indented. Mesoventrite evenly covered with setigerous punctures. Metaventral anterior process shorter and wider than mesoventral posterior process. Metendosternite ( Fig. 71 ) without furcal laminae; process extending slightly anteriorly; furcal arms almost straight, extending anterolaterally.

Protibiae ( Fig. 30 ) gently widening to apex., weakly curved. Tibial spur formula 0–0–0.

Apical margin of abdominal ventrite V broadly and slightly emarginated. Apical margin of pygidium ( Fig. 72 ) almost straight; struts short. Apical margin of ventrite VI ( Fig. 73 ) almost straight. Spicular fork ( Fig. 74 ) with short intraspicular plate, which is 1/4 of spicular fork.

CM ( Figs 77–79 ) with fine spines, about 1/2 as long as tegmen. Tegmen shorter than phallus; phallobase incised dorsally; phallobasic struts reaching phallobasic apodeme, which is 3/4 as long as tegmen. Phallus flattened, divaricated in apical 1/3, rounded at apex.

Female. Similar to male, but EyD/EyW 1.53; antennae ( Fig. 20 ) weakly serrate; central portion of metaventrite with pair of bundles of elongate setae-like trichobothria; apical margin of ventrite V truncated broadly and deeply in middle.

Apical margin of pygidium ( Fig. 75 ) almost straight; struts short. Apical margin of ventrite VI ( Fig. 76 ) incised in middle; apodeme 2/3 as long as total length.

Spermatheca weakly sclerotized; Sc lacking. CPr ( Figs 80–82 ) distally trifurcate; central process large; dorsolateral and ventrolateral processes relatively short.

Measurements and ratios. Male (n Y 2): BL: 8.67–9.06 mm; PL: 1.88–2.13 mm; PWA: 1.18–1.30 mm; PWM: 0.70–0.75 mm; PWB: 1.05 mm; EL: 6.55–7.18 mm; EW: 1.50–1.68 mm; EyD: 0.38–0.43 mm; EyW: 0.55–0.63 mm; EL/PL: 3.08–3.83; EW/PWA: 1.15–1.43; EW/PWM: 2.00–2.39; EW/PWB: 1.43–1.60; PWA/PWB: 1.12–1.24; PWA/PWM: 1.68–1.73; PWB/PWM: 1.40–1.50; EyD/ EyW: 0.68. Female (n Y 1): BL: 9.46 mm; PL: 2.10 mm; PWA: 1.23 mm; PWM: 0.70 mm; PWB: 1.00 mm; EL: 7.36 mm; EW: 1.48 mm; EyD: 0.65 mm; EyW: 0.43 mm; EL/PL: 3.51; EW/PWA: 1.20; EW/PWM: 2.11; EW/PWB: 1.48; PWA/PWB: 1.23; PWA/PWM: 1.75; PWB/PWM: 1.43; EyD/EyW: 1.53.

Distribution ( Fig. 126 ). Taiwan.

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 71–82. Metendosternite, terminal parts and genitalia of Cladiscus terminalis Schenkling, 1912 (71–74, 77–79, male; 75, 76, 80–82, female). 71 – metendosternite; 72, 75 – pygidium; 73, 76 – ventrite VI; 74 – spicular fork; 77–79 – male genitalia in lateral (77), ventral (78), and dorsal (79) views; 80–82 – apices of ovipositor in lateral (80), ventral (81), and dorsal (82) views.