Taxonomic history

Xyleborus subsimiliformis Eggers, 1939a: 11.

Xylosandrus subsimiliformis (Eggers): Wood and Bright, 1992: 800


2.45−3.0 mm long (mean = 2.6 mm; n = 5); 1.96−2.14 times as long as wide. This species can be distinguished by its large size; elytral disc flat, longer than declivity; declivital face steep, abruptly separated from disc; elytra appearing obliquely truncate; posterolateral margins of elytra carinate to interstriae 7; declivital face with four apparent granulate striae (striae 5 short, converging with striae 4 forming a loop); declivital face convex; declivital striae and interstriae setose, setae recumbent, very fine, hair-like, equal to the width of an interstria; interstriae granulate, granules multiseriate, confused; strial granules two times larger than those of interstriae; pronotum longer than wide, from dorsal view conical frontally (type 6) and lateral view taller (type 2), summit at basal quarter, basal quarter shagreened, dull, densely punctate; and broad, dense mycangial tuft on the pronotal base.

May be confused with

Xylosandrus beesoni, X. brevis, X. diversepilosus, X. jaintianus, and X. subsimilis


 China (Yunnan), Myanmar, Vietnam

Host plants

unknown (Smith et al. 2020b)


This species was collected in great abundance by SMS and AIC in Lao Cai province, Vietnam. In nearly all collecting events the species was found in small branches (1−4 cm) in diameter that were dry and often exposed to full sun, an unusual feeding habit, as most other xyleborines are unable to thrive under these conditions.

DNA data

specimens not available for sequencing