Cyclorhipidion japonicum (Nobuchi, 1981)

Smith, Sarah M., Beaver, Roger A. & Cognato, Anthony I., 2020, A monograph of the Xyleborini (Coleoptera, Curculionidae, Scolytinae) of the Indochinese Peninsula (except Malaysia) and China, ZooKeys 983, pp. 1-442 : 1

Cyclorhipidion japonicum (Nobuchi, 1981) Fig. 42C, D, J

Xyleborus japonicus Nobuchi, 1981a: 153.

Cyclorhipidion japonicum (Nobuchi): Smith et al. 2018b: 394.

Type material.

Holotype (NIAES).

New records.

China: [unspecificed province], northeastern China, DB07, A56, Wang (RJRC, 1). S. Yunnan, Xishuangbanna, 28 km NW Jinghong, vic. An Ma Xi Zhan (NNNR), 22°12'N, 100°38'E, 700 m, forest, 25.iii.2009, L. Meng (RABC, 1); as previous except: 23 km NW Jinghong, vic. Na Ban (NNNR), 22°09.49'N, 100°39.92'E, 730 m, rubber plantation, 15.vi.2008, A. Weigel (RABC, 1). Thailand: Chiang Mai, Doi Pui, 1400 m, 18-22.x.2004, W. Puranasakul, ex EtOH trap (RABC, 2); as previous except: 6-27.vi.2005 (RABC, 1). [Chaiyaphum], Phu Khieo N.P., branch, vii.2005, Hulcr et al. (RABC, 1).

Diagnosis.

2.1-2.3 mm long (mean = 2.2 mm; n = 4); 2.81-3.5 × as long as wide. This species is distinguished by the small size; declivity obliquely truncate, moderately to strongly sulcate; pronotum elongate from dorsal view (type 9); declivity laterally sulcate to interstriae 3, interstriae 3 bearing five tubercles along its length.

Similar species.

Cyclorhipidion neocavipenne , C. xeniolum .

Distribution.

China* (Yunnan), Japan, Russia (Far East), South Korea, Thailand*.

Host plants.

Recorded only from Castanopsis and Quercus ( Fagaceae ) ( Nobuchi 1981a).

Figures

Figure 42. Dorsal, lateral and declivital view of Cyclorhipidion inarmatum lectotype, 2.8 - 3.0 mm (A, B, I), C. japonicum, 2.1 - 2.3 mm (C, D, J), C. miyazakiense, 2.6 - 3.0 mm (E, F, K), C. muticum holotype, 4.0 mm (G, H, L).