Hadrodemius pseudocomans (Eggers, 1930)

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

Hadrodemius pseudocomans (Eggers, 1930) Fig. 62E, F, I

Xyleborus pseudocomans Eggers, 1930: 187.

Hadrodemius pseudocomans (Eggers): Wood and Bright 1992: 819.

Xyleborus artecomans Schedl, 1953c: 24. Synonymy: Beaver 2010: 55.

Type material.

Holotype Xyleborus pseudocomans (FRI), paratype (NMNH, 1). Lectotype Xyleborus artecomans (ZMFK), paralectotype (ZMFK, 1).

New records.

China: Chongqing, Chengkou, 16.vii.2016, Tian-Shang (RABC, 1). Guangdong, iii.2014, Jianguo Wang (RJRC, 1). Guangxi A. R., Jiangidi, 25°55.6'N, 110°14.8'E, 365 m, terraced fields surrounded with shrubs and bamboo forest, 12.iv.2013, M. Ficáček, J. Hájek, J. Růžička (MNHP, 1). Hainan, Jianfengling Mt., 600 m, 26.iii.1984, Shimei Song (NMNH, 1). Jiangxi, Jinggang Shan, Jingzhushan Zhufeng, 26°31.0'N, 114°05.9'E, 640 m, stream valley, 25.iv.2011, M. Ficáček, J. Hájek (MNHP, 1). Laos: NE, Hua Phan, Ban Saluei, Phou Pan (Mt.), 20°12'N, 104°01'E, 1300-1900 m, 7.iv-25.v.2010, C. Holzschuh (NHMUK, 2); as previous except: 27.iv-1.vi.2011 (RABC, 1).

Diagnosis.

6.0-7.2 mm long (mean = 6.86 mm; n = 5); 1.8-1.9 × as long as wide. This species is distinguished by its larger size; declivity strongly impressed, sides of impression raised and bearing tubercles or rugosities; and elytral impression bearing fairly sparse, long hairs or short hairs only.

This species is most similar to H. comans from which it is distinguished by the strongly impressed declivity rather than the declivity plano-concave from suture to interstriae 3.

Similar species.

Hadrodemius comans .

Distribution.

Brunei, China (Chongqing*, Fujian, Guangdong*, Guangxi*, Hainan, Jiangxi*, Xizang, Yunnan), India (Assam, West Bengal), Laos*, Myanmar, Thailand.

Host plants.

Polyphagous ( Beaver 2010).

Figures

Figure 62. Dorsal, lateral and declivital view of Hadrodemius comans, 5.0 - 6.3 mm (A, B, G), H. globus, 4.9 - 5.8 mm (C, D, H), and H. pseudocomans, 6.0 - 7.2 mm (E, F, I).