Xyleborinus schaufussi (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

Xyleborinus schaufussi (Blandford, 1894) Fig. 85C, D, J

Xyleborus schaufussi Blandford, 1894b: 117.

Xyleborinus schaufussi (Blandford): Wood and Bright 1992: 816.

Xyleborus kraunhiae Niisima, 1910: 14. Synonymy: Smith et al. 2018b: 397.

Type material.

Syntypes Xyleborus schaufussi (NHMUK). Syntypes of Xyleborus kraunhiae should be housed in NIAES but have not been located ( Smith et al. 2018b).

New records.

China: Guizhou, Guiyang, Huaxi, 31.iv.2015, Guangyu Liu, ex ethanol trap (UFFE, 1). Sichuan, Tongjiang, 1.viii.1980, Yongguang Shen, ex Betula sp. (NMNH, 1).

Diagnosis.

2.5-3.1 mm long (mean = 2.73 mm; n = 5); 3.21-3.57 × as long as wide. This species is distinguished by the posterior margin of elytra broadly rounded; declivital face with interstriae 1 and 2 unarmed by tubercles; declivital face strongly sulcate; large body size; lateral declivital margins strongly elevated, costate, bearing 4-6 pairs of large sharply pointed backwardly hooked denticles (often asymmetric); sulcate area of declivity impunctate, shagreened, dull; and elongate body form.

Similar species.

Xyleborinus artestriatus , X. echinopterus , X. ephialtodes , X. octiesdentatus , X. speciosus , X. spinipennis .

Distribution.

China* (Guizhou, Sichuan), Japan, Taiwan.

Host plants.

Recorded from Millettia ( Fabaceae ) ( Niisima 1910), Fagus ( Fagaceae ) and Symplocos ( Symplocaceae ) ( Beaver and Liu 2010), and Betula ( Betulaceae ).

Figures

Figure 85. Dorsal, lateral and declivital view of Xyleborinus saxesenii, 2.3 - 2.5 mm (A, B, I), X. schaufussi, 2.5 - 3.1 mm (C, D, J), X. sculptilis paratype, 2.1 - 2.25 mm (E, F, K), and X. speciosus holotype, 2.6 - 2.7 mm (G, H, L).