Cryptoxyleborus subnaevus Schedl, 1937

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 subnaevus Schedl, 1937 Fig. 39E, F, K

Cryptoxyleborus subnaevus Schedl, 1937a: 552.

Type material.

Lectotype (NHMW).

New records.

Laos: Vientiane, Gi Sion vill. De Tha Ngone, 28.ii.1965, J.L. Gressitt, light trap (BPBM, 1); as previous except: 26 km SW of Ban Me Thuot, 855 m, 20.v.1960, light trap (BPBM, 1). Vietnam: Cuc Phuong N.P., 20°15.586'N, 105°42.320'E, 147 m, 30.iv-1.v.2005, A. Kun (HNHM, 1).

Diagnosis.

2.2-2.7 mm long (mean = 2.46 mm; n = 5); 3.29-4.17 × as long as wide. This species is distinguished by the pair of subcircular mycangial pits close to the scutellum on the dorsal elytral surface; antennal funicle 4-segmented; and attenuate elytral apex.

Similar species.

Cryptoxyleborus barbieri .

Distribution.

Australia, ‘Borneo’, Brunei, India (Kerala), Indonesia (Kalimantan, Sumatra), Laos*, East & West Malaysia, Myanmar, New Guinea, Philippines, Thailand, Vietnam*.

Host plants.

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

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).