Diuncus justus (Schedl)

Xyleborus justus Schedl, 1931

Diucus justus (Schedl): Hulcr and Cognato 2009

Xyleborus marginicollis (Schedl, 1936b), syn. n.

Specimens examined.

Indonesia, Java, Buitenzorg ( Diuncus justus, holotype, NHMW); Philippines, Luzon, ( Xyleborus marginicollis, holotype, NHMW).

Length.

1.5 mm.

Comments.

Type specimen of Xyleborus marginicollis Schedl represents one end of a continuum of variation in Diuncus justus: short (1.5 mm) but robust (most representatives of Diuncus justus slightly longer and more slender). Diagnostic characters identical: surface of declivity devoid of vestiture, no elytral denticles, smooth impression across interstriae 2 and 3 (very shallow).