Cyclorhipidion pelliculosum (Eichhoff, 1878)

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

Cyclorhipidion pelliculosum (Eichhoff, 1878) Fig. 43G, H, L

Xyleborus pelliculosus Eichhoff, 1878a: 392.

Cyclorhipidion pelliculosum (Eichhoff): Hulcr and Cognato 2010a: 12.

Xyleborus seiryorensis Murayama, 1930: 25. Synonymy: Knížek 2011: 243.

Xyleborus quercus Kurentzov, 1948: 51. Synonymy: Knížek 2011: 243.

Xyleborus starki Nunberg, 1956: 209 (new name for X. quercus Kurentzov, 1948 nec Hopkins 1915). Synonymy: Knížek 2011: 243.

Type material.

Syntypes Xyleborus seiryorensis (NMNH, 3).

New records.

Taiwan: Ilan Co., Fushan, 2000 m, 27.vi.1995, A. Warneke, ex light trap (RABC, 1); as previous except: 26.vii.1995 (RABC, 1).

Diagnosis.

3.2-3.5 mm long (mean = 3.3 mm; n = 5); 2.67-3.0 × as long as wide. This species is distinguished by the short, steep declivity that is approximately 25% of total elytral length, armed with large tubercles on interstriae 1 and 3, interstriae 2 always unarmed; posterolateral margins rounded; and declivital interstriae 1 setae in three confused rows, interstriae 2 setae uniseriate (Table 1 ).

Similar species.

This species is a part of a challenging species group consisting of C. bodoanum , C. distinguendum , C. inarmatum , C. tenuigraphum , and C. xeniolum (Table 1 ).

Distribution.

China (Shanxi, Sichuan), Japan, South & North Korea, Russia (Far East), Taiwan*. Imported to USA ( Atkinson et al. 1990).

Host plants.

Most records are from Castanopsis and Quercus ( Fagaceae ), but the species has also been recorded from Acer ( Aceraceae ), Juglans ( Juglandaceae ) and from Alnus and Betula ( Betulaceae ) ( Mandelshtam et al. 2018).

Figures

Figure 43. Dorsal, lateral and declivital view of Cyclorhipidion neocavipenne holotype, 2.5 mm (A, B, I), C. obesulum holotype, 2.1 mm (C, D, J), C. ohnoi holotype, 4.1 - 4.2 mm (E, F, K), and C. pelliculosum, 3.2 - 3.5 mm (G, H, L).