Taxonomic history
Xyleborus mancus Blandford, 1898: 428.
Apoxyleborus mancus (Blandford): Wood, 1980: 90.
Xylosandrus mancus (Blandford): Wood, 1984: 229.
Synonyms
Xyleborus abruptus Sampson, 1914: 388. Schedl, 1951a: 51.
Xyleborus mancus formosanus Eggers, 1930: 186. Schedl, 1952b: 61.
Diagnosis
3.2−3.6 mm long (mean = 3.46 mm; n = 5); 2.13−2.4 times as long as wide. This species can be distinguished by its large size; upper part of eye smaller than lower part; elytral disc strongly ascending apically, longer than declivity; declivital face steep, abruptly separated from disc; elytra appearing truncate; posterolateral margins of elytra carinate to suture forming a circumdeclivital ring; declivital face flat, shagreened, four punctate, glabrous, and somewhat wavy striae visible; strial punctures large; interstriae glabrous, granulate, granules more abundant near apex (especially between interstriae 1 and 2); posterolateral margin granulate; pronotum as long as wide, from dorsal view rounded (type 1) and lateral view basic (type 0), summit at midpoint, basal half shining, densely punctate; and broad, dense mycangial tuft on the pronotal base.
May be confused with
Amasa spp., Xylosandrus amputatus, X. bellinsulanus, and X. trunculus
Distribution
Within the study region, recorded from China (Chongqing, Gansu, Hainan, Hong Kong, Xizang, Yunnan), India (Karnataka, Kerala), Laos, Taiwan, Thailand, Vietnam. Outside the region, recorded from East Africa (Tanzania), Indonesia (Java, Sumatra), Madagascar, East & West Malaysia, Mauritius, Philippines, Seychelles, Sri Lanka.
Host plants
polyphagous (Dole and Cognato 2010)