Diplopherusa ahsini Yang & Yang, 2013

Murakami, Hiroyuki, 2016, Review of the generaDiplopherusa and Paracladiscus (Coleoptera: Cleridae: Tillinae) from Japan and Taiwan, with descriptions of two new species, Acta Entomologica Musei Nationalis Pragae 56 (2), pp. 725-741 : 730

Diplopherusa ahsini Yang & Yang, 2013

( Figs 2 , 11 , 26, 32, 38 , 45–46, 61)

Diplopherusa ahsini Yang & Yang, 2013: 168 (original description).

Type locality. Taiwan, Pingtung County, Machia.

Material examined. TAIWAN: NANTOU COUNTY: Nanshanshi, Renai Township , 1.vi.1973, 1J, unknown collector ( EUMJ) ; Shihtyutou, Renai Township , 10–13.vi.1995, 1 J, Y. Arita leg ( EUMJ) . KAOHSIUNG COUNTY: Shanping, Maolin Township , 4.iv.1976, 1 J, K. Ushijima leg. ( EUMJ) ; Shihnanshan, near Liukuei , 12.v.1991, 1 J, W. Chen leg. ( NHMI) .

Differential diagnosis. This species is similar to D. yonaguniensis sp. nov. and D. kitamurai , but is distinguished by the following characters: elytra orange, widest before apex; elytral striae extended to apex; pygidium rather wide; apical margin of sternite VIII incised in middle in males.

Supplementary description. Male ( Fig. 2 ). For full descriptions see YANG & YANG (2013). Approximate length ratio of antennomeres (n = 1): 5.6: 1.0: 6.3: 5.8: 5.6: 5.6: 5.6: 5.4: 5.2: 4.8: 12.5. Relative length ratio of rami of antennomeres III–X (n = 1): 1.1: 1.4: 1.5: 1.3: 1.2: 1.2: 1.2: 1.0.

Measurements (n = 4): EyW: 0.30–0.42 (0.38) mm; EyD: 0.66–0.88 (0.78) mm; BL: 5.77–8.53 (7.68) mm; PL: 1.53–2.20 (1.94) mm; PW: 1.05–1.50 (1.33) mm; EL: 4.24–6.40 (5.74) mm; EW: 1.38–2.03 (1.82) mm. EyD/EyW: 1.95–2.20 (2.06); PL/PW: 1.44–1.47 (1.46); EL/EW: 3.08–3.28 (3.15); EL/PL: 2.76–3.28 (2.96); EW/PW: 1.31–1.46 (1.37).

Anterior plate of metendosternite slightly extended anteriorly. Unguis with basal denticles; metatibiae apically dilated to near apex, thence weakly narrowed towards apex, densely covered with pubescence on posterior inner surface, latter concave but flattened.

Pygidium ( Fig. 26 ) rounded posteriorly; pygidial struts stout, distally extended. Sternite VIII ( Fig. 32 ) weakly pigmented in central portion, slightly incised on apical margin. Spicular fork ( Fig. 38 ) with intraspicular plate.

Connecting membrane between tegmen and phallus in fully extended condition (Figs 45–46) vested with fine spins; tegmen shorter than phallus; phallobase membranous in ventral view; phallobasic struts present; phallobasic apodeme elongate, rounded at apex; phallus divaricate in apical 1/4, dorsally with median orifice, roundly pointed at apex.

Female. Unknown.

Distribution. Taiwan: Nantou Co. and Pingtung Co. ( YANG & YANG 2013); Kaohsiung Co. (present paper) ( Fig. 61 ).

Figures

Figs 1–5. Habitus of Diplopherusa spp (1–4 – male; 5 – female). 1 – Diplopherusa yonaguniensis sp. nov., holotype; 2 – D. ahsini Yang & Yang, 2013; 3 – D. kitamurai Nakane, 1989; 4–5 – D. shibatai (Miyatake, 1965). Scale bars: 2.0 mm.

Figs 10–18. Antennae (10–13, 15, 17 – male; 14, 16, 18 – female). 10 – Diplopherusa yonaguniensis sp. nov.; 11 – D. ahsini Yang & Yang, 2013; 12 – D. kitamurai Nakane, 1989; 13–14 – D. shibatai (Miyatake, 1965); 15–16 – Paracladiscus choui sp. nov.; 17–18 – P. atricolor Miyatake, 1965. Scale bars: 0.5 mm.

Figs 25–42. Male pygidia (25–30), 8th sternites (31–36) and spicular forks (37–42). 25, 31, 37 – Diplopherusa yonaguniensis sp. nov.; 26, 32, 38 – D. ahsini Yang & Yang. 2013; 27, 33, 39 – D. kitamurai Nakane, 1989; 28, 34, 40 – D. shibatai (Miyatake, 1965); 29, 35, 41 – Paracladiscus choui sp. nov.; 30, 36, 42 – P. atricolor Miyatake, 1965. Scale bars: 0.25 mm (25–28, 30–34, 36–40, 42), 0.5 mm (29, 35, 41).

Fig. 61. Distribution map of Diplopherusa and Paracladiscus species in Japan and Taiwan.