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 fulleri sp. n. Figures 16, 47 Type material examined. Holotype: ♂ "Thailand. Nakhon ratchasima: Khao Yai NP. 700-800 m; 21 Apr 1990 U.V. light EF♀90020E E. Fuller/ 1014 Asia Sericini spec." (UMIC). Paratypes: 1 ♂ "Thailand. Nakhon ratchasima: Khao Yai NP. 700-800 m; 21 Apr 1990; UV light EF♀90020E E. Fuller" (ZFMK), 3 ♂♂ "Thailand: Nahon Nayok Khao Yai N.P. Lum Ta Kong 14°25.565'N , 101°23.442'E , 726 m; malaise; 19-26.iv.07 Wirat Sukho leg. T2127" (QSBG), 2 ♂♂, 1 ♀ "Thailand: Nahon Nayok Khao Yai N.P. Lum Ta Kong View Point 14°25.565'N , 101°23.442'E , 726 m; Malaise trap; 12-19.iv.07; Wirat Sukho leg. T2124" (QSBG). Description. Length of body: 9.1 mm; length of elytra: 7.1 mm; maximum width: 5.5 mm. 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: 0.53. Ratio of length of metepisternum/metacoxa: 1/1.73. Metatibia short and wide, ratio width/length: 1/3.25; basal group of dorsal spines of metatibia at first third of metatibial length. Aedeagus: Fig. 16 A-D . Habitus: Fig. 16E. Figure 16. A-E Tetraserica fulleri sp. n. (holotype) F-I T. tonkinensis (Moser) (lectotype) J-N T. paratonkinensis sp. n. (holotype) A, F, J aedeagus, left side lateral view D, H, M aedeagus, right side lateral view B, G, K parameres, dorsal view C, L parameres, ventral view E, I, N habitus. Scale bars: 0.5 mm. Habitus not to scale. Variation. Length of body: 8.4-9.8 mm; length of elytra: 6.5-7.3 mm; maximum width: 5.2-5.8 mm. Female: Eyes as large as in male; antennal club composed of three antennomeres, as long as remaining antennomeres combined. Diagnosis. Tetraserica fulleri sp. n. differs from all other Tetraserica species in having long parameres and a long median phallobasal lamina, and by the simple left paramere being wide for its entire length (at middle nearly as wide as apex of phallobase; lateral view). Etymology. The new species is named after its collector, E Fuller (noun in genitive singular).