Leptoxyleborus sordicauda (Motschulsky, 1863)

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

Leptoxyleborus sordicauda (Motschulsky, 1863) Fig. 65C, D, F

Phloeotrogus sordicauda Motschulsky, 1863: 514.

Leptoxyleborus sordicauda (Motschulsky): Wood 1980: 94.

Phloeotrogus attenuatus Motschulsky, 1863: 512. Synonymy: Wood 1969: 119.

Xyleborus concisus Blandford, 1894b: 107. Synonymy: Hulcr and Cognato 2013: 103.

Xyleborus marginatus Eggers, 1927b: 91. Synonymy: Browne 1955: 354.

Xyleborus sordicaudulus Eggers, 1927b: 91. Synonymy: Browne 1955: 354.

Xyleborus incurvus Eggers, 1930: 197. Synonymy: Wood 1989: 175.

Xyleborus sordicaudulus peguensis Eggers, 1930: 198. Synonymy: Schedl 1951a: 51.

Type material.

Holotype Xyleborus concisus (NHMUK). Holotype Xyleborus incurvus (FRI), paratype (NMNH, 2). Holotype Xyleborus marginatus (NMNH). Holotype Xyleborus sordicaudulus (NMNH), paratype (NMNH, 1). Holotype Xyleborus sordicaudulus peguensis (FRI).

New records.

China: Guangxi Reg., Miaoershan, S slope, 800-1300 m, 20-27.vi.1997, Bolm (NHMB, 1). Jiangxi, Long Nan, 12.vii.2016, Lv-Jia, Lai S-C., ex Cyclobalanopsis glauca (RABC, 1). Vietnam: Dong Nai, Cat Tien National Park, near park headquarters, 11°25'44"N, 107°25'44"E, 120 m, 26-31.v.1999, B. Hubley, D. Currie, VIET1H95-99 041, ex flight intercept trap (SEMC, 2); as previous except: 11.42854; 107.42544, 148 m, 23.ii.2017, VN97, A.I. Cognato, T.A. Hoang, ex 5 cm diameter branch (MSUC, 23).

Diagnosis.

2.6-3.6 mm long (mean = 2.84 mm; n = 5); 2.15-2.5 × as long as wide. This species is distinguished by the larger size, declivity extremely flat and broad; especially laterally; posterolateral declivital margin elevated, carinate; declivital surface covered with minute star-shaped scales.

Similar species.

Leptoxyleborus machili , Ancipitis puer , A. punctatissimus .

Distribution.

China* (Guangxi, Jiangxi), India (Andaman Is, West Bengal), Indonesia (Java, Maluku, Sumatra), Japan, East & West Malaysia, Myanmar, New Guinea, Philippines, Taiwan, Thailand, Vietnam.

Host plants.

Polyphagous ( Browne 1961b).

Remarks.

The species attacks large logs, smaller stems down to approximately 3 cm diameter, and lianas ( Browne 1961b). Beaver and Browne (1979) suggest that it may be particularly attracted to sappy stems.

Figures

Figure 65. Dorsal, lateral and declivital view of Leptoxyleborus machili, 1.9 - 2.1 mm (A, B, E), and L. sordicauda, 2.6 - 3.6 mm (C, D, F).