Cryptoxyleborus eggersi Schedl, 1936

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

Cryptoxyleborus eggersi Schedl, 1936 Fig. 38E, F, K

Cryptoxyleborus eggersi Schedl, 1936c: 60.

Cryptoxyleborus dryobalanopsis Schedl, 1942a: 184. Synonymy: Bright and Skidmore 1997: 4, 175.

Xyleborus eggersianus Schedl, 1960b: 110 (unnecessary new name for X. eggersi (Schedl 1936 nec Beeson 1930)).

Type material.

Lectotype Cryptoxyleborus eggersi (NMNH), paralectotype (NHMW).

New records.

Laos: Kham Mouan, Ban Khoun Ngeun, 18°07'N, 104°29'E, ~ 200 m, 24-29.iv.2001, P. Pacholátko (RABC, 1). Philippines: v.1958, H. Milliron (BPBM, 1).

Diagnosis.

3.5-4.4 mm long (mean = 3.85 mm; n = 4); 3.14-3.5 × as long as wide. This species is distinguished by its large size; large and broad mycangial pits on the basal slope of elytra; elytral disc with a transverse saddle-like depression; declivital interstriae bearing strongly hooked tubercles from basal 1/3; antennal funicle 4-segmented.

Similar species.

Cryptoxyleborus quadriporus , C. stenographus , C. turbineus .

Distribution.

Brunei, Laos*, East & West Malaysia, Philippines, Vietnam.

Host plants.

Recorded from Balanocarpus , Dipterocarpus , Dryobalanops and Shorea ( Dipterocarpaceae ) ( Beaver and Hulcr 2008).

Remarks.

A lectotype for the species was designated by Anderson and Anderson (1971: 12) as well as by Schedl who designated it a “holotype” (1979: 87). The citation by Schedl is invalid and unnecessary. Wood and Bright (1992: 828) mistakenly cited the Schedl designation. The lectotype is in NMNH and a paralectotype is in NHMW.

Figures

Figure 38. Dorsal, lateral and declivital view of Cryptoxyleborus barbieri lectotype, 2.15 - 2.5 mm (A, B, I), C. confusus, 2.0 mm (C, D, J), C. eggersi paralectotype, 3.5 - 4.4 mm (E, F, K), and C. percuneolus, 1.4 mm (G, H, L).