Tetraserica pahinngamensis, 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 : 73-74

Tetraserica pahinngamensis sp. n. Figures 32, 49

Type material examined.

Holotype: ♂ "X-DA4631 labcode: VD068 THAILAND Chaiyaphum Pa Hin Ngam NP Dry evergreen forest near stream 461m Malaisie trap, 15°40, 569'N, 101°26.705'E, 13.-19.vi.2007, Katae Sa-nog & Buakaw Adnafai leg., T2479, Tetraserica spTH_V36/ X-DA4631/ sp-TH-V36" (QSBG). Paratypes: 1 ♂ "Thailand Chaiyaphum Pa Hin Ngam NP Dipterocarp forest 15°38.099'N, 101°23.921'E, 698 m Malaisie trap, 1.-7.ii.2007, Katae Sa-nog & Buakaw Adnafai T1644" (QSBG), 1 ♂ "X-DA4630 labcode: VD067 THAILAND Chaiyaphum Pa Hin Ngam NP Dry evergreen forest near stream 461m Malaisie trap, 15°40, 569'N, 101°26.705'E, 13-19.vi.2007, Katae Sa-nog & Buakaw Adnafai leg., T2479, Tetraserica spTH_V36/ X-DA4630" (ZFMK), 1 ♂ "X-DA4679 labcode: VD081 THAILAND Chaiyaphum Pa Hin Ngam NP Dry evergreen forest near stream 461m Malaisie trap, 15°40, 569'N, 101°26.705'E, 13.-19.vi.2007, Katae Sa-nog & Buakaw Adnafai leg., T2479, Tetraserica spTH_V36/ X-DA4679" (ZFMK), 1 ♂ "X-DA4680 labcode: VD082 THAILAND Chaiyaphum Pa Hin Ngam NP Dry evergreen forest near stream 461m Malaisie trap, 15°40, 569'N, 101°26.705'E, 13.-19.vi.2007, Katae Sa-nog & Buakaw Adnafai leg., T2479, Tetraserica spTH_V36/ X-DA4680" (ZFMK), 1 ♂ "X-DA4682 THAILAND Chaiyaphum Pa Hin Ngam NP Deciduous forest 357m Malaise trap 15°39.966'N, 101°27.198'E, Katae Sa-nog & Buakaw Adnafai leg. 7-13.vi.2007" (ZFMK), 1 ♂ "X-DA4683 THAILAND Chaiyaphum Pa Hin Ngam NP Deciduous forest 357m Malaise trap 15°39.966'N, 101°27.198'E, Katae Sa-nog & Buakaw Adnafai leg. 7-13.vi.2007" (ZFMK), 1 ♂ "X-DA4684 THAILAND Chaiyaphum Pa Hin Ngam NP Deciduous forest 357 m Malaise trap 15°39.966'N, 101°27.198'E, Katae Sa-nog & Buakaw Adnafai leg. 7-13.vi.2007" (ZFMK), 1 ♂ "X-DA4685 THAILAND Chaiyaphum Pa Hin Ngam NP Deciduous forest 357 m Malaise trap 15°39.966'N, 101°27.198'E, Katae Sa-nog & Buakaw Adnafai leg. 7-13.vi.2007" (ZFMK), 1 ♂ "X-DA4695 THAILAND Chaiyaphum, Pa Hin Ngam NP, Deciduous forest near stream 398 m, Malaise trap 15°40.232'N, 101°26.942'E, Katae Sa-nog & Buakaw Adnafai leg. 19.-20.vi.2007" (ZFMK), 1 ♂ "X-DA4701 THAILAND Chaiyaphum Pa Hin Ngam NP Deciduous forest 357m Malaise trap 15°39.966'N, 101°27.198'E, Katae Sa-nog & Buakaw Adnafai leg. 1.-7.vi.2007" (ZFMK), 1 ♂ "X-DA4707 THAILAND Chaiyaphum Tat Tone NP Streamside at Tat Fah waterfall 242m Malaise trap 15°56.463'N, 102°05.953'E, Tawit Jaruphan & Orawan Budsawong leg. 26.iii.-2.iv.2007" (ZFMK), 1 ♂ "Thailand, Prov. Prachin Buri, Sakaerat Ecol. Research Institute,/ No. 25 at light 1.VI.2001 E. Horaváth & Gy. Sziráki” (HNHM).

Description.

Length of body: 8.1 mm; length of elytra: 6.4 mm; maximum width: 5.1 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: 0.52. Ratio of length of metepisternum/metacoxa: 1/1.92. Metatibia short and wide, ratio width/length: 1/2.87; basal group of dorsal spines of metatibia at first third of metatibial length.

Aedeagus: Fig. 32 E–G. Habitus: Fig. 32H.

Female unknown.

Variation.

Length of body: 7.6-8.9 mm; length of elytra: 5.6-6.9 mm; maximum width: 4.9-5.8 mm.

Diagnosis.

Tetraserica pahinngamensis sp. n. is very similar to T. wapiensis (Frey, 1972) in shape of aedeagus, differing by the left paramere being simple rather than divided into two long and narrow filiform lobes.

Etymology.

The new species is named with reference to its occurrence in the Pa Hin Ngam National Park (adjective in the nominative singular).