Taxonomic history

Xyleborus andamanensis Blandford, 1896b: 222.

Euwallacea andamanensis (Blandford): Wood, 1989: 172. 

Synonyms

Xyleborus noxius Sampson, 1913: 445. Wood and Bright 1992: 686.

Xyleborus siobanus Eggers, 1923: 186Schedl 1958c: 150.

Xyleborus burmanicus Beeson, 1930: 210. Schedl 1970b: 224.

Xyleborus intextus Beeson, 1930: 211. Wood 1989: 172.

Xyleborus senchalensis Beeson, 1930: 212. Wood 1989: 172.

Xyleborus granulipennis Eggers, 1930: 194. Wood 1989: 172.

Xyleborus talumalai Browne, 1966: 248Hulcr and Cognato 2013: 90.

Diagnosis

2.8−3.4 mm long (mean = 3.12 mm; n = 5); 2.5−2.91 times as long as wide. This species is distinguished by its slender form; posterolateral margin of declivity costate and granulate, pronotum appearing subquadrate when viewed dorsally (type 3); and protibia outer margin distinctly triangular bearing with five or fewer large acute denticles; strial punctures much larger on the declivity than on the disc; declivity broadly rounded; declivital surface often appearing opalescent.

May be confused with

Euwallacea fornicatus species complex (E. fornicatior, E. fornicatus, E. kuroshio, E. perbrevis), E. geminus, E. malloti, E. neptis, E. semirudis, E. testudinatus, and E. velatus

Distribution

Bangladesh, Federated States of Micronesia, China (Hong Kong, Jiangxi, Yunnan), Indonesia (Buru I., Java, Mentawai Is., Sumatra), India (Andaman Is, Assam, Bihar, Madhya Pradesh, Maharashtra, Meghalaya, Tamil Nadu, West Bengal), Japan, Laos, West Malaysia, Myanmar, New Guinea, Thailand, Vietnam

Host plants

polyphagous (Beeson 1930, Browne 1961b)

Remarks

Stouthamer et al. (2017) suggest that the synonymy of X. talumalai (Genbank number KU727039) with this species needs reinvestigation given the occurrence of the two species in two different clades with substantially different COI sequences. However, the findings of Stouthamer et al. are incorrect because they are based on a misidentified specimen of E. talumalai which is actually E. velatus.

This species is a species complex and is in need of revision (Cognato et al. 2020).

DNA data

Sequences available for COI and CAD.

COI: HM064084MN619921; MN619922; MN619923MN619924MN619925; MN619926

CAD: MN620197MN620198MN620199; MN620200