Tetraserica spinicrus (Frey, 1972) Frey, 1972

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 : 97

Tetraserica spinicrus (Frey, 1972) comb. n. Figures 42, 54

Neoserica spinicrus Frey, 1972: 201.

Type material examined.

Paratype: 1 ♂ "Laos, V 1967 Ban-Van-Eue/ Paratype Neoserica spinicrus G. Frey 1971" (CF).

Additional material examined.

Laos: 1 ♂ "Laos 1963 Umgeb. Pak Lay/ CF" (CF), 1 ♂ "X-DA4793 labcode: VD099, LAOS, Stupa GH, 5 km W Muang Sing, 750 m, 21.1482N 101.1711E, 9.v-2.vi.2011, M. Murzin, O. Shulga leg. Tetraserica sp LA_V57/ sp-LA-V57/ X-DA4793" (ZFMK), 1 ♂ "X-DA4778 labcode: VD098, LAOS, Stupa GH, 5 km W Muang Sing, 750 m, 21.1482N 101.1711E, 9.v-2.vi.2011, M. Murzin, O. Shulga leg. Tetraserica spLA_V57/ X-DA4778" (ZFMK), 1 ♂ "LAOS north, 5-11.V.1997, 20 km NW Louang Namtha, N 21°09.2, E 101°18.7, alt. 900 ± 100 m, E. Jendek & O. Šauša leg./ Coll. Pacholátko / 183 Sericini Asia spec."(CPPB), 1 ♂ "Laos, 21°09'N, 101°19'E, Louangnamtha pr. Namtha-Muang Sing, 5-31.v.1997, 900-1200 m Vit. Kubáň leg/ coll. P. Pacholátko /LS 55" (CPPB), 1 ♂ "Haut Mekong Vien Poukha 3.V.1918 R.V. de Salvazza" (NHMUK).

Redescription.

Length of body: 9.1 mm; length of elytra: 6.8 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: 0.61. Ratio of length of metepisternum/metacoxa: 1/1.66. Posterior margin of metafemur with sharp hook. Metatibia short and wide, ratio width/length: 1/2.47; basal group of dorsal spines of metatibia at first third of metatibial length.

Aedeagus: Fig. 42 A–C. Habitus: Fig. 42D.