Taxonomic history

Xyleborus testudo Eggers, 1939b: 116.

Xylosandrus testudo (Eggers): Wood and Bright, 1992: 801.

Cnestus testudo (Eggers): Dole and Cognato, 2010: 532.


4.2−4.4 mm long (mean = 4.31 mm; n = 5); 1.54−1.62 times as long as wide. This species can be distinguished by the presence of a mesonotal mycangial tuft on the pronotal base; elytral disc short, three times scutellum length; elytral declivity obliquely truncate; pronotum type 1 when viewed dorsally; antennal club type 2, with two sutures visible on posterior face; antennal funicle four-segmented; protibia distinctly triangular; procoxae narrowly separated; posterolateral margin of elytra weakly carinate from apex to declivital base along interstriae 7; declivital interstriae granulate, setose with recumbent ground vestiture and a median row of long, erect, hair-like setae; striae 1 impressed; discal punctures dense, confused; and uniformly pitch black or piceus-colored body with brown legs and antennae.

May be confused with

Cnestus gravidus, C. improcerus, and C. mutilatus


China (Yunnan), Laos, Taiwan, Thailand, Vietnam

Host plants

unknown (Smith et al. 2020b)

DNA data

specimens not available for sequencing