Taxonomic history

Xyleborus luctuosus Eggers, 1939a: 13.

Euwallacea luctuosus (Eggers): Wood and Bright, 1992: 691.


3.6 mm long (n = 1); 3.6 times as long as wide. This species is the most slender Euwallacea species. It can be further recognized by the posterolateral margins of declivity weakly costate; pronotum from dorsal view elongate, anterior margin rounded (type 7); outer margin of protibia obliquely triangular and bearing seven large denticles, their bases contiguous.

May be confused with

Euwallacea sibsagaricus, E. subalpinus, and Heteroborips tristis



Host plants

unknown (Smith et al. 2020b)

DNA data

specimens not available for sequencing