Taxonomic history

Webbia sublaevis Eggers, 1927b: 104.

Xyleboricus sublaevis (Eggers): Schedl 1936c: 64.

Arixyleborus sublaevis (Eggers): Schedl 1952d: 162.

Eggersanthus sublaevis (Eggers): Sittichaya and Smith 2020: 283.

Diagnosis

2.05–2.2 mm long and 2.73–2.9 times as long as wide (n = 4). Like the genus this species is distinguished by the following combination of characters: pronotum in dorsal view rectangular (type a in Hulcr et al. 2007), anterior margin weakly concave, without a median row of serrations, corners sharply quadrate, anterolateral corners asperate with 4–5 serrations forming a 90° angle; pronotum in lateral view with disc longer than anterior slope (type 7 in Hulcr et al. 2007); antennal funicle 4-segmented, club obliquely truncate type 2 (Hulcr et al. 2007), approximately circular, as long as wide, segment 1 corneous, nearly encircling anterior face, segment 2 pubescent, visible on anterior face only; elytral declivity with granulate striae and interstriae; protibiae very slender, distinctly triangular, posterior face flat and unarmed; scutellum large, triangular, clearly visible from dorsal view; elytra attenuate; and no mycangial tufts present.

May be confused with

Arixyleborus hirsutulus

Distribution

Philippines, Thailand

Host plants

unknown (Sittichaya and Smith 2020)