Ambrosiophilus subnepotulus (Eggers, 1930) Fig. 15G, H, L

Xyleborus subnepotulus Eggers, 1930: 178.

Ambrosiodmus subnepotulus (Eggers): Wood and Bright 1992: 680.

Ambrosiophilus subnepotulus (Eggers): Beaver and Liu 2010: 22.

Xyleborus cristatuloides Schedl, 1971a: 284. syn. nov.

Type material.

Holotype Xyleborus subnepotulus (FRI). Lectotype Xyleborus cristatuloides (NHMW).

New records.

China: Guizhou, Guiyang, Huaxi, 31.iv.2015, Y. Li, ex in flight (UFFE, 9). Hong Kong, vi.2017, J. Skelton (MSUC, 15). Laos: Vientiane, Ban Van Eue, 31.xii.1965, native collector (BPBM, 2).

Diagnosis.

2.5-2.8 mm long (mean = 2.64 mm; n = 7); 2.27-2.6 × as long as wide. This species is distinguished by declivital interstriae 1 unarmed, interstriae 2 armed by one tubercle at declivital summit, remainder of interstriae 2 unarmed, interstriae 3 with two large tubercles; declivity weakly bisulcate from sutural margin to striae 2; interstriae 3 weakly convex; pronotal surface shiny, discal punctures minute, very fine, widely spaced by 2-6 diameters of a puncture; and declivital surface smooth, shiny; and moderate size.

Similar species.

Ambrosiophilus consimilis, A. cristatulus, A. indicus, A. osumiensis .

Distribution.

China* (Guizhou, Hong Kong*), Indonesia (Java), Laos*, Myanmar, Sri Lanka, Taiwan.

Host plants.

The only recorded host is Albizia lebbeck ( Fabaceae) (Beeson 1930).

Remarks.

Wood (1989) considered X. cristatuloides Schedl as a synonym of Ambrosiodmus asperatus . However, the lectotype has a punctate pronotal disc and declivital sculpturing that is almost identical with Ambrosiophilus subnepotulus and it is here placed in synonymy.