Amasa opalescens (Schedl, 1937) Fig. 9C, D, J

Xyleborus opalescens Schedl, 1937a: 550.

Amasa opalescens (Schedl): Wood and Bright 1992: 684.

Type material.

Lectotype (NHMW).

Diagnosis.

4.5-4.8 mm long (4.7 mm long; n = 3); 2.4-2.5 × as long as wide. This species is distinguished by its large size; pronotum rounded, robust from lateral view (type 5); declivital interstriae 1 unarmed (lacking granules) and flat; declivital strial punctures very large, irregularly spaced; and declivital surface appearing smooth and opalescent.

Similar species.

Amasa beesoni, A. cylindrotomica, A. schlichii .

Distribution.

East & West Malaysia, Thailand, Vietnam.

Host plants.

Recorded only from species of Eugenia and Tristania ( Myrtaceae), and possibly with a fixed association with this family (Browne 1961b).