Amasa versicolor (Sampson, 1921)

Smith, Sarah M., Beaver, Roger A. & Cognato, Anthony I., 2020, A monograph of the Xyleborini (Coleoptera, Curculionidae, Scolytinae) of the Indochinese Peninsula (except Malaysia) and China, ZooKeys 983, pp. 1-442 : 1

Amasa versicolor (Sampson, 1921) Fig. 10C, D, H

Xyleborus versicolor Sampson, 1921: 29.

Amasa versicolor (Sampson): Wood and Bright 1992: 685.

Type material.

Holotype (NHMUK), allotype (NHMUK).

New records.

Ceylon [Sri Lanka]: Kalutara Dist., Kanneliya, 250 m, 23.v.1973, S.L. Wood, ex limbs (NMNH, 1); Morapitiya, 250 m, 27.v.1973, S.L. Wood (NMNH, 2).

Diagnosis.

2.5-2.6 mm long (mean = 2.57 mm; n = 5); 2.27-2.43 × as long as wide. The species is distinguished by the pronotum appearing basic (type 2) when viewed dorsally, anterior margin serrate; declivital surface shagreened, dull, opaque; declivital interstriae granulate, granules multiseriate, confused; declivity setose, interstriae moderately covered with semi-recumbent hair-like setae, approximately as long as the width of an interstria; and circumdeclivital carina margin setose, setae long, erect, bristle-like.

Similar species.

Amasa cycloxyster , A. galeoderma , A. resecta , A. schlichii , A. youlii .

Distribution.

Federated States of Micronesia, India ( ‘Bengal’), Indonesia (Java), East & West Malaysia, Myanmar, Sri Lanka*, Thailand.

Host plants.

Polyphagous ( Browne 1961b; Beaver and Browne 1979).

Figures

Figure 10. Dorsal, lateral and declivital view of Amasa tropidacron holotype, 2.5 - 2.8 mm (A, B, G), A. versicolor, 2.5 - 2.6 mm (C, D, H), and A. youlii holotype, 2.9 - 3.0 mm (E, F, I).