Xyleborus pfeilii (Ratzeburg, 1837)

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

Xyleborus pfeilii (Ratzeburg, 1837) Fig. 90G, H, L

Bostrichus pfeilii Ratzeburg, 1837: 168.

Xyleborus pfeilii (Ratzeburg): Eichhoff, 1864: 38.

Bostrichus alni Mulsant & Rey, 1856: 111. Synonymy: Eichhoff 1876b: 378.

Xyleborus vicarius Eichhoff, 1876a: 203. Synonymy: Schedl 1963a: 482.

Xyleborus adumbratus Blandford, 1894b: 115. Synonymy: Schedl 1963a: 482.

Xyleborus septentrionalis Niisima, 1909: 162. Synonymy: Smith et al. 2018b: 398.

Type material.

Lectotype Xyleborus septentrionalis (NIAES), paralectotype (NIAES, 1).

New records.

China: Jiangxi, Jinggang Shan Mts., Xiangzhu vill. env., 26°35.5'N, 114°16.0'E, 374 m, rice fields, forested stream valley, M. Fikáček, J. Hájek (MNHP, 2; RABC, 1). India: Assam-Arunachal Pradesh border: Bhalukpong, 27°00'48"N, 92°39'08"E, 150 m, 1-8.v.2012, L. Dembický, FIT (ZFMK, 2); as previous except FIT (flight intercept trap) (ZFMK, 1). Laos: NE, Hua Phan, Ban Saluei, Phou Pan Mt., ~ 20°12'N, 104°01'E, 1300-1900 m, 17-26.v.2009, C. Holzschuh (RABC, 1). Vientiane, Ban Van Eue, 15.xii.1965, native collector (BPBM, 1). Sri Lanka: Monaragala Dist., Buttala, 50 m, 6.vi.1975, S.L. Wood, ex Anogeissus latifolia (NMNH, 1); as previous except: collected from log (NMNH, 2).

Diagnosis.

2.9-3.2 mm long (mean = 3.02 mm; n = 5); 2.73-3.2 × as long as wide. This species is distinguished by the declivity steep, appearing flat when viewed laterally; the declivital interstriae 1-3 laterally broadened from base to declivital midpoint then narrowing towards apex; declivital posterolateral margin costate to interstriae 7; declivital interstriae 1 and 3 flat, interstriae 2 weakly impressed; declivital striae weakly impressed; declivital interstriae 1 armed by two or three large denticles, interstriae 2 unarmed, declivital interstriae 3 armed by two or three large denticles, denticles on interstriae 3 taller than those on interstriae 1; and declivital strial punctures large, shallow, coarse and confused near large tubercles.

Similar species.

Xyleborus affinis , X. cognatus , X. ferrugineus , X. festivus , X. perforans , X. volvulus .

Distribution.

Recorded in the study region from China (Fujian, Hunan, Jiangxi*, Sichuan, Yunnan), India (Andaman Is, Assam*), Laos*. Also recorded from Japan, South Korea, throughout Europe, and in North Africa and Turkey. Imported to and established in USA and Canada ( Vandenberg et al. 2000; Gomez et al. 2018a).

Host plants.

Polyphagous ( Wood and Bright 1992; Mizuno and Kajimura 2008).

Remarks.

Mizuno and Kajimura (2008) provide information on the biology, gallery system and development.

Figures

Figure 90. Dorsal, lateral and declivital view of Xyleborus mysticulus holotype, 2.2 - 2.5 mm (A, B, I), X. opacus paratype, 2.7 mm, 2.2 - 2.5 mm (C, D, J), X. perforans, 2.3 - 2.6 mm (E, F, K), and X. pfeilii, 2.9 - 3.2 mm (G, H, L).