Tetraserica breviforceps, 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 : 52-53

Tetraserica breviforceps sp. n. Figures 21, 47

Type material examined.

Holotype: ♂ "Laos, Sekong Prov. ca. 12 km S Sekong TAD FAEK Waterfalls (at light) 15°14, 7'N, 106° 45, 1'E, 118m, Jiři Hájek leg., 8+12.v.2010/ 207 Sericini Asia spec." (NMPC). Paratype: 1 ♂ "Laos centr., Khammouan prov. NAKAI env. 4-8.5.1998, Route No 8, alt. 560 ± 20 m, N17°42.8, E 105°08.9 (GPS), E Jendek & O Šauša leg./ coll. P Pacholátko” (CPPB), 1 ♂ "Laos, Sekong Prov. ca. 12 km S Sekong TAD FAEK Waterfalls (at light) 15°14, 7'N, 106° 45, 1'E, 118 m, Jiři Hájek leg. 8+12.v.2010/ 207 Sericini Asia spec." (ZFMK).

Description.

Length of body: 8 mm; length of elytra: 6 mm; maximum width: 5.6 mm. Surface of labroclypeus and disc of frons glabrous. Smooth area anterior to eye twice as wide as long. Eyes moderately large, ratio of diameter/interocular width: 0.74. Ratio of length of metepisternum/metacoxa: 1/2.08. Metatibia short and wide, ratio width/length: 1/2.44; basal group of dorsal spines of metatibia at first third of metatibial length.

Aedeagus: Fig. 21 A–C. Habitus: Fig. 21D.

Female unknown.

Variation.

Length of body: 8.0-9.2 mm; length of elytra: 6.0-6.5 mm; maximum width: 5.5-5.6 mm.

Diagnosis.

Tetraserica breviforceps sp. n. differs from all other Tetraserica species with its short parameres and very short median phallobasal lamina, and by the left paramere having a robust (nearly half as long as paramere), subsphaerical, and apically convex dorsal lobe at its base.

Etymology.

The name of the new species (noun in apposition) is derived from the combined Latin words brevis (short) and forceps, with reference to the short parameres.