A monograph on the genus Tetraserica from the Indochinese region (Coleoptera, Scarabaeidae, Sericini) Author Fabrizi, Silvia Author Dalstein, Vivian Author Ahrens, Dirk text ZooKeys 2019 837 1 155 http://dx.doi.org/10.3897/zookeys.837.32057 journal article http://dx.doi.org/10.3897/zookeys.837.32057 1313-2970-837-1 4A18822935804DB7B1229F131F6A0AC8 4A18822935804DB7B1229F131F6A0AC8 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, Jiri Hajek 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 Sausa leg./ coll. P Pacholatko" (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, Jiri Hajek 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. Figure 21. A-D Tetraserica breviforceps sp. n. (holotype) E-H T. nahaeoensis sp. n. (holotype) I-L T. champassakana sp. n. (holotype) A, E, I aedeagus, left side lateral view C, G, K aedeagus, right side lateral view B, F, J parameres, dorsal view D, H, L habitus. Scale bars: 0.5 mm. Habitus not to scale. 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.