Cryptoxyleborus turbineus (Sampson, 1923)

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 turbineus (Sampson, 1923) Fig. 39G, H, L

Xyleborus turbineus Sampson, 1923: 288.

Cryptoxyleborus turbineus (Sampson): Schedl 1937a: 551.

Type material.

Syntype (NHMUK).

Diagnosis.

3.2-3.3 mm long (mean = 3.26 mm; n = 4); 3.2-3.3 × 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. stenographus and is distinguished by the larger size and elytral vestiture irregularly biseriate on discal interstriae 2-4.

Similar species.

Cryptoxyleborus eggersi , C. quadriporus , C. stenographus .

Distribution.

India (Jharkhand, Odisha, West Bengal), Myanmar, Philippines, Thailand, Vietnam.

Host plants.

Recorded from Pentacme and Shorea ( Dipterocarpaceae ) ( Beeson 1930).

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).