Taxonomy

Hadrodemius Wood, 1980: 94

Diagnosis

Hadrodemius are distinguished by their large size, 4.90–7.20 mm long; stout (less than twice as long as wide) and hairy appearance; pronotal base and scutellar area ornamented with a dense tuft of hairs associated with mesonotal mycangium; scutellum visible only on the anterior declivital slope of elytral bases; procoxae contiguous; and the pronotal lateral margins rounded, not carinate.

May be confused with

Hadrodemius is closely related to Anisandrus, Cnestus, and Xylosandrus, all of which possess a mesonotal mycangium and the associated dense tuft of hairs at the scutellar area and pronotal base (Gohli et al. 2017, Johnson et al. 2018). These three genera can be distinguished from Hadrodemius by their normal scutellum that is flush with the dorsal surface of the elytra rather than just visible only on the anterior declivital slope of the elytral bases.

Distribution

Hadrodemius occurs in tropical areas from India in the West, through the Oriental region to New Guinea, and the Solomon Islands in the East.

Gallery system

Usually constructed in small stems from 1.5–5.0 cm diameter, it comprises a circumferential entrance gallery leading to one to several longitudinal galleries (Beaver 2010).

Remarks

Further details of the biology are given by Browne 1961b, Kalshoven 1959b, and Beaver 2010.