Cryptoxyleborus stenographus (Schedl, 1971)

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 stenographus (Schedl, 1971) Fig. 39C, D, J

Xyleborus stenographus Schedl, 1971b: 383.

Cryptoxyleborus stenographus (Schedl): Wood and Bright 1992: 829.

Type material.

Holotype (NHMW).

New records.

Laos: Sekong, ~ 12 km S Sekong, Taofaek waterfall, 15°14.7'N, 106°45.1'E, 118 m, at light, 12.v.2010, J. Hájek, (MHNP, 1).

Diagnosis.

2.35-2.6 mm long (mean = 2.46 mm; n = 4); 3.0-3.33 × as long as wide. This species is distinguished by the elytral apex acuminate; two mycangial pits broad and narrow on basal slope of elytra; declivital interstriae denticulate; and antennal funicle 4-segmented.

This species most closely resembles C. turbineus and is distinguished by the smaller size and by the elytral vestiture uniseriate on all discal interstriae (except at base).

Similar species.

Cryptoxyleborus eggersi , C. quadriporus , C. turbineus .

Distribution.

Indonesia (Sumatra), Laos*, Thailand.

Host plants.

Unknown.

Figures

Figure 39. Dorsal, lateral and declivital view of Cryptoxyleborus quadriporus holotype, 3.2 - 3.3 mm (A, B, I), C. stenographus, 2.35 - 2.6 mm (C, D, J), C. subnaevus, 2.2 - 2.7 mm (E, F, K), and C. turbineus, 3.2 - 3.3 mm (G, H, L).