Cladiscus hachijoensis Murakami 2020, sp. nov.
Creators: name: Murakami, Hiroyuki
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cleridae
Cladiscus
Cladiscus hachijoensis

description: Cladiscus hachijoensis sp. nov.
(Figs 6, 7, 10, 11, 23, 24, 32, 39, 95–106, 122, 123)
[Japanese name: Hachijo-hoso-kakkoumushi]
Cladiscus obeliscus (misidentification): UΕDΑ et. al. (1994).
Cladiscus sp.: KΑ WΑΒΑΤΑΚΕ (2009): 29 [faunistics, fig. 2].
Type series. HOLOΤYΡΕ: 1 ♁, ‘Sueyoshi/ Hachijôjima Is. | Tôkyô Met. | 7–Jul–1981 | S. Kusakabe leg.’ (EUMJ). PΑRΑΤYΡΕ S: 1 ♀, ‘Sueyoshi/ Hachijôjima Is. | Tôkyô Met. | 7–Jul–1981 | S. Kusakabe leg.’ (KSCJ); 1 ♀, ‘[SUESOSHI] | Is. Hachijyôjima | Tôkyô Met.| 8. VII.1983.| T. WAKEJIMA leg.’ (KSCJ); 1 ♀, ‘ TÔKSÔ: JAPAN | NoboryôPass | Hachijyô Island | 23-25. VII. 2001 | Jirô Ogawa leg.’ (EUMJ); 1 ♁, ‘(HACHIJÔ ISLAND) | Neighbourhood of | Hachijô-onsen Hotel | Kashitate, 4. VII. | 1991, S. Hisamatsu’ (EUMJ); 1 ♁, ‘Mitsune-Noboriyu toge, | 5. VI. 1964, S. Hirashima & M. Shiga leg.’ (KUMJ); 1 ♁, ‘HACHIJO | 5.VI.71 | T. Nakane’ (HUMJ).
Description. Male (Figs 6, 10). Head brownish black, sometimes brownish red; pronotum and elytra brownish red; antennae and legs brownish black.
Antennae (Fig. 23) weakly serrate, longer than total length of head and pronotum combined; antennomere XI slightly longer than X.
Pronotum smooth at apex; postcoxal projections (Fig. 39) long; prosternal process not extending contact point of postcoxal projections. Elytra with rows of deep, large, asetigerous punctures in basal 3/4; apical margins not indented. Mesoventrite with sparse setigerous punctures except for central portion. Metaventral anterior process short. Metendosternite (Fig. 95) without furcal laminae; process short, extending anteriorly, bifurcated at apex; furcal arms almost straight, extending anterolaterally.
Protibiae (Fig. 32) widening from basal half to apex. Tibial spur formula 0–0–0.
Apical margin of abdominal ventrite V emarginated broadly and slightly. Pygidium (Fig. 96) rounded posteriorly; pygidial struts extended distally. Apical margin of ventrite VI (Fig. 97) almost straight. Spicular fork (Fig. 98) with intraspicular plate, which is 1/2 of spicular fork.
CM (Fig 101–103) without fine spines, 1/3 as long as tegmen. Tegmen flattened, widest at apex. Phallus flattened, divaricated in apical 1/2, rounded at apex.
Female. Similar to male (Fig. 7), but EyD/EyW 2.82– 3.23; antennae (Fig. 24) almost as long as total length of head and pronotum combined; apical margin of abdominal ventrite V emarginated broadly and deeply.
Apical margin of pygidium (Fig. 99) almost straight; pygidial struts extended anteriorly. Apical margin of ventrite VI (Fig. 100) almost straight; apodeme about half of ventrite VI.
Spermatheca weakly sclerotized; Sc (Fig. 122) annular. CPr (Figs 104–106) distally trifurcate; central and ventrolateral processes large, equal in size; dorsolateral process relatively short.
Measurements and ratios. Male (n Y 2): BL: 5.19–5.91 mm; PL: 1.46–1.64 mm; PWA: 1.02–1.08 mm; PWM: 0.52–0.54 mm; PWB: 0.76–0.82 mm; EL: 3.55–4.45 mm; EW: 1.20–1.34 mm; EyD: 0.60–0.82 mm; EyW: 0.20–0.28 mm; EL/PL: 2.16–3.05; EW/PWA: 1.18–1.24; EW/PWM: 2.31–2.48; EW/PWB: 1.58–1.63; PWA/PWB: 1.32–1.34; PWA/PWM: 1.96–2.00; PWB/PWM: 1.46–1.52; EyD/ EyW: 2.14–4.10. Female (n Y 2): BL: 5.82–6.84 mm; PL: 1.46–1.84 mm; PWA: 1.02–1.30 mm; PWM: 0.44–0.60 mm; PWB: 0.72–0.86 mm; EL: 4.36–5.00 mm; EW: 1.12 mm; EyD: 0.62–0.84 mm; EyW: 0.22–0.26 mm; EL/PL: 2.72–2.99; EW/PWA: 0.86–1.10; EW/PWM: 1.87–2.55; EW/PWB: 1.30–1.56; PWA/PWB: 1.42–1.51; PWA/PWM: 2.17–2.32; PWB/PWM: 1.43–1.64; EyD/EyW: 2.82–3.23. Differential diagnosis. This species is similar to Cladiscus fulvescens (Chevrolat, 1874), but distinguished by blackish antennae and legs.
Etymology. The specific name is derived from the type locality, Hachijo-jima, Tokyo Prefecture, Japan; adjective. Distribution (Fig. 126). Japan: Tokyo: Izu Islands: Hachijo-jima.
Remarks. This species was recorded from Hachijo-jima as Cladiscus obeliscus (UΕDΑ et. al. 1994) because of misidentification. Subsequently, it was listed as Cladiscus sp. (KΑ WΑΒΑΤΑΚΕ 2009). In this study, this species is newly described.
description: Published as part of Murakami, Hiroyuki, 2020, Review of the genus Cladiscus (Coleoptera: Cleridae) from Japan and Taiwan, with descriptions of two new species, pp. 475-492 in Acta Entomologica Musei Nationalis Pragae 60 (2) on pages 486-489, DOI: 10.37520/aemnp.2020.031, http://zenodo.org/record/4489548