Cyphochilus reichenbachi, Sabatinelli, 2020

Sabatinelli, Guido, 2020, Taxonomic notes on the genus Cyphochilus Waterhouse, 1867 (Coleoptera, Scarabaeoidea, Melolonthinae) with description of 10 new species, Revue suisse de Zoologie 127 (1), pp. 157-181 : 177

Cyphochilus reichenbachi n. sp.

Figs 62-64

Holotype: MHNG ( MHNG-ENTO-81701 ); 1 ♂; VIETNAM: // North Vietnam, Tam Dao / Vinh huc prov . 1010 m / 21˚27.588’ N, 105˚38.475 E / IV.2014, leg. Hoa Binh (P) // HOLOTYPUS ♂ / Cyphochilus / reichenbachi mihi / G. Sabatinelli, 2020 (T on red) //.

Paratypes: 32 specimens.

VIETNAM: MHNG; 1 ♂; Tonkin; ach. Baudet . – PCAR; 1 ♂; same data as holotype . – PCAR; 1 ♂; North Vietnam, Tam Dao , 400-900 m; VI-VII.2012; leg. Hoa Binh Nguyen . – PCAR; 2 ♂; North Vietnam, Tam Dao , 400- 900 m; 18.VI.2012; leg. Hoa Binh Nguyen . – MHNG; 10 ♂, 1 ♀; North Vietnam, Ta Phin 10 km NNW Sapa , ca. 1700 m; III.2012; leg. Binh Nguen. – PCAR; 15 ♂; same data as previous . – PCDK, 1 ♂, Ha Giang .

Description of the holotype male: Size – BL: 19.6 mm, BW: 8.3 mm, BWX: 10.9 mm, situated at midpoint of elytra. Color. Integument dark shiny brown; dorsal surface with scattered yellow scales aggregated along lateral part of the body. Head – CW/L: 3; anterolateral edges of clypeus rounded, lateral edges of clypeus curved and divergent posteriad; frons large, making eyes relatively small, not prominent (F/O: 4.7); antennal club longer than antennomeres 2-7 (A2-7/CL: 0.86). Pronotum – Transverse (PnW/L: 2), strongly convex; apical angles and lateral margins flattened, apical angles right, not protuberant; basal lateral margins straight, basal angles obtuse and largely rounded. Elytra – Without any visible striae. Thoracic sterna – Surface with short, white pubescence and scales; mesosternum slightly developed anteriorly (MstL: 0.64 mm) however, visible in lateral view between the mesocoxae. Abdomen – Sternites with sparse scales; pygidium convex with apical margin narrowly reflected. Legs – Protibia tridentate with the basal tooth well developed; slender apical tooth longer than the middle one. Aedeagus – Parameres strongly asymmetric with four appendices ( Figs 62-64 ).

Variability: BL: 18.5-20.5 mm (x = 19.5, n = 30).

Females: BL: 18 mm, BW: 7.5 mm, BWX: 10.5 mm; antennal club ovate, shorter than preceding antennomeres (A2-7/CL: 1.5).

Etymology: Andreas Reichenbach (Leipzig, Germany) is a scarabeologist and he provided me with several Cyphochilus specimens for study, among them the new species here described.

Distribution: This species is known from several localities in northern part of Vietnam.

Remarks: Cyphochilus reichenbachi can be readily separated from all other congeners by the unique shape of the parameres strongly asymmetric with four appendices.

Figures

Figs 59-70. Parameres in right, dorsal, and left view. (59-61) Cyphochilus zuercheri n. sp., holotype. (62-64) C. reichenbachi n. sp., holotype. (65-67) C. feae Brenske, 1903, holotype. (68-70) C. leducthoi n. sp., holotype. – Scale bars = 1 mm.