Tetraserica geiserae, 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 : 22-23

Tetraserica geiserae sp. n. Figures 5, 47

Type material examined.

Holotype: ♂ "Tonkin occ. Rég. de Hoa Binh R.P.A. de Cooman 1918/ 1006 Asia Sericini spec." (MNHN). Paratypes: 3 ♂♂ "Tonkin occ. Rég. de Hoa Binh R.P.A. de Cooman 1918" (MNHN, ZFMK).

Description.

Length of body: 7 mm; length of elytra: 4.9 mm; maximum width: 4.3 mm. Dorsal surface blackish, ventral surface reddish brown. Surface of labroclypeus and disc of frons both 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: 1/1.81. Metatibia short and wide, ratio width/length: 1/3.27; basal group of dorsal spines of metatibia at first third of metatibial length.

Aedeagus: Fig. 5 A–C. Habitus: Fig. 5D.

Female unknown.

Variation.

Length of body: 7.0-7.1 mm; length of elytra: 4.9-6.2 mm; maximum width: 4.3-5.2 mm.

Diagnosis.

Tetraserica geiserae sp. n. differs from T. cucphongensis in lacking the dorsal subbasal lobe of the left paramere.

Etymology.

The new species is named in honour of Dr Geiser, Silvia’s oncologist, for all her efforts and care (noun in genitive singular).