Xyleborinus octiesdentatus (Murayama, 1931) Fig. 84E, F, K

Xyleborus octiesdentatus Murayama, 1931: 46.

Xyleborinus octiesdentatus (Murayama): Beaver et al. 2008: 234.

Type material.

Syntypes (NMNH, 4).

New records.

Vietnam: Cao Bang, 22°33.9981'N, 105°52.591'E, 1051 m, 12-17.iv.2014, VN12, Cognato, Smith, Pham (MSUC, 1).

Diagnosis.

2.50-2.65 mm long (mean = 2.55 mm; n = 5); 2.79-3.13 × as long as wide. This species is distinguished by the posterior margin of elytra broadly rounded; declivital face with interstriae 1 and 2 unarmed by tubercles; declivital face moderately sulcate; large body size; lateral declivital margins elevated, bearing 4-6 pairs of long, narrow, sharply pointed spines (often asymmetric), increasing in length from base to apex; sulcate area of declivity smooth, shiny; and elongate body form.

Similar species.

Xyleborinus artestriatus, X. echinopterus, X. ephialtodes, X. schaufussi, X. speciosus, X. spinipennis .

Distribution.

China (Sichuan), Japan, South Korea, Vietnam*. Imported and established in USA (Rabaglia et al. 2010; Gomez et al. 2018a).

Host plants.

Recorded from Carpinus ( Betulaceae), Illicium ( Illiciaceae), Cleyera and Eurya ( Theaceae) (Wood and Bright 1992).