Anisandrus niger (Sampson)

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

Anisandrus niger (Sampson) Fig. 23A, B, I

Xyleborus niger Sampson, 1912: 247.

Anisandrus niger (Sampson): Beaver and Liu 2018: 538.

Type material.

Holotype (NHMUK).

New records.

Laos: NE, Houa Phan, Ban Saluei, Phou Pan Mt, 20°12-13.5'N, 103°59.5-104°01'E, 1340-1780 m, 15.iv.-15.v.2008, Lao collectors (RABC, 1); as previous except: 20°12'N, 104°01'E, 1300-1900 m, 7.iv.-25.v.2010, C. Holzschuh (RABC, 1). Vietnam: Cao Bang, 22°36.3'N, 105°52.6'E, 1435-1601 m, 13-17.iv.2014, VN16, Cognato, Smith, Pham, FIT (MSUC, 1).

Diagnosis.

5.8-5.9 mm long (mean = 5.87 mm; n = 3); 2.0-2.19 × as long as wide. This species is distinguished by its large size, mesonotal mycangial tuft the length of the scutellum; elytral disc convex; declivital interstriae impunctate; elytral surface smooth, shiny to weakly shagreened; declivital face flattened when viewed laterally; declivity appearing weakly bisulcate; declivital interstriae 2 weakly impressed, declivital interstriae 1 and 3 tuberculate to apex, interstriae 2 with a tubercle at summit and three or four irregularly spaced granules along its length; and declivital posterolateral margin rounded.

Similar species.

Anisandrus apicalis , A. congruens , A. cristatus , A. geminatus , A. sinivali .

Distribution.

Laos*, Myanmar, Nepal, Vietnam*.

Host plants.

Unknown.

Figures

Figure 23. Dorsal, lateral and declivital view of Anisandrus niger, 5.8 - 5.9 mm (A, B, I), A. paragogus holotype, 2.8 mm (C, D, J), A. percristatus, 5.5 mm (E, F, K), and A. sinivali holotype, 3.9 mm (G, H, L).