Tetraserica romae, Fabrizi, Silvia, Dalstein, Vivian & Ahrens, Dirk, 2019

Fabrizi, Silvia, Dalstein, Vivian & Ahrens, Dirk, 2019, A monograph on the genus Tetraserica from the Indochinese region (Coleoptera, Scarabaeidae, Sericini), ZooKeys 837, pp. 1-155 : 14-16

Tetraserica romae sp. n. Figures 1, 51

Type material examined.

Holotype: ♂ "Vietnam-N (Na Hang) 160 km NW Ha Noi, NE env. of Na Hang 26.5-6.6.1996 150-200 m lg. A. Napolov & I. Roma/ CNa Riga" (ZFMK). Paratype: 1 ♂ "X-DA4501 labcode: VD 023 Vietnam: Tuyn Quang pr. SE-E env. of Na Hang, 200-700 m 22°17'30"-22'30"N, 105°26'-28'E, 1-12.v.2010 L. Dembický leg. (VN2/2010 MZM EXPEDITION) Tetraserica sp VI_V1" (ZFMK), 2 ♂♂ "Vietnam-N Tuyen quang pr. SE-E env. of Na Hang 22°17'30"-22'30"N, 105°26'-28'E, 200-700 m L. Dembicky leg., 1.-12.V.2010" (ZFMK).

Description.

Length of body: 7.3 mm; length of elytra: 5.3 mm; maximum width: 4.6 mm. Dorsal surface blackish, ventral surface reddish brown. Surface of labroclypeus and disc of frons glabrous. Smooth area anterior to eye twice as wide as long. Eyes small, ratio of diameter/interocular width: 0.46. Ratio of length of metepisternum/metacoxa: 1/1.65. Metatibia moderately long and wide, ratio width/length: 1/3.81; basal group of dorsal spines of metatibia at first third of metatibial length.

Aedeagus: Fig. 1 F–H. Habitus: Fig. 1I.

Female unknown.

Variation.

Length of body: 7.3-8.1 mm; length of elytra: 5.3-5.8 mm; maximum width: 4.6-5.0 mm.

Diagnosis.

Tetraserica romae sp. n. differs from all other Tetraserica species by the right hammer-shaped paramere, which has a sharply pointed double spine at apex, one directed dorsally, and a larger one ventrally.

Etymology.

The new species is named after one of its collectors, Ilona Roma (noun in genitive singular).