Anisandrus apicalis (Blandford, 1894)

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 apicalis (Blandford, 1894) Fig. 18C, D, J

Xyleborus apicalis Blandford, 1894b: 105.

Ambrosiodmus apicalis (Blandford): Wood 1989: 169.

Anisandrus apicalis (Blandford): Hulcr et al. 2007: 578.

Type material.

Holotype (NHMUK).

New records.

China: Jiangxi, Wu-Yi Mt., 17.vii.2017, Lai, S-C, Tian, S et al. (RABC, 1). Sichuan, Jiuzhago Nature Reserve, 33°08.865'N, 103°55.134'E, 2483 m, 5.vii.2005, A.I. Cognato, ex Pinus armandii (MSUC).

Diagnosis.

3.05-3.4 mm long (mean = 3.17 mm; n = 5); 2.33-2.43 × as long as wide. This species is distinguished by the mesonotal mycangial tuft the length of the scutellum; elytral disc with or without a weak transverse saddle-like depression; declivital posterolateral margin costate to interstriae 5; declivity appearing bisulcate, weakly impressed from striae 1 and 2, interstriae 3 feebly inflated and tuberculate from base to apical 1/2 then becoming flattened and unarmed to apex; and moderately sized sharp incurved spine at base of declivity on interstriae 2.

This species strongly resembles A. cristatus and A. congruens and is most easily distinguished by the moderate size, the less strongly impressed declivital sulci and smaller spines on interstriae 3 that are not backwardly hooked and much smaller than the spine at the summit of interstriae 2.

Similar species.

Anisandrus congruens , A. cristatus , A. geminatus , A. niger , A. sinivali , A. venustus .

Distribution.

China (Anhui, Guangxi, Guizhou, Hainan, Jiangxi*, Shanxi, Sichuan, Xizang, Yunnan), India (Meghalaya, Sikkim, West Bengal), Japan, South & North Korea, Kuril Islands, Nepal, Thailand.

Host plants.

A polyphagous species usually attacking angiosperms, but also recorded from Pinus ( Pinaceae ) ( Murayama 1936; Nobuchi 1966).

Remarks.

Published records from India, Nepal, Thailand, and some Chinese provinces may refer to Anisandrus cristatus or A. congruens , with which A. apicalis has been confused previously.

Figures

Figure 18. Dorsal, lateral and declivital view of Anisandrus achaete holotype, 3.5 mm (A, B, I), A. apicalis, 3.05 - 3.4 mm (C, D, J), A. auco holotype, 2.9 mm (E, F, K), and A. auratipilus holotype, 2.8 mm (G, H, L).