Anisandrus percristatus (Eggers, 1939) Smith & Beaver & Cognato, 2020

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 percristatus (Eggers, 1939) comb. nov. Fig. 23E, F, K

Xyleborus percristatus Eggers, 1939a: 12.

Type material.

Paratype (NMNH, 1).

New records.

China: Sichuan, E’bian, 1900 m, 2.vi.1960, Huifen Yin, ex Schima superba (NMNH, 1).

Diagnosis.

5.5 mm long (mean = 5.5 mm; n = 3); 2.12-2.2 × as long as wide. This species is distinguished by the dense mesonotal mycangial tuft that extends laterally from the scutellum to striae 3; declivital posterolateral margin carinate to interstriae 5; elytral disc with a profound transverse saddle-like depression; declivital base with very large incurved spine on interstriae 3, interstriae 3 with four additional equally sized and spaced denticles; declivity broadly sulcate to interstriae 5; elytral disc sulcate anteriad to spine on interstriae 3; large body size; body shiny, appearing polished, largely glabrous, minutely punctate; declivital punctures confused; and pronotal asperities very broad, fine, widely spaced.

Similar species.

Anisandrus auratipilus , A. hera , A. klapperichi , A. venustus , A. xuannu .

Distribution.

China (Sichuan, Yunnan), Myanmar.

Host plants.

Recorded from Schima superba ( Theaceae ).

Remarks.

This species is transferred to Anisandrus because of the visible scutellum, pronotal base with a large, dense setal tuft (indicating a mesonotal mycangium), contiguous procoxae; antennal club type 1, taller than wide, and protibiae triangular.

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).