Amasa resecta (Eggers, 1923)

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 resecta (Eggers, 1923) Fig. 9E, F, K

Xyleborus abruptus Eggers, 1923: 169.

Xyleborus resectus Eggers, 1927a: 391 (new name for X. abruptus Eggers, 1923 nec Sampson 1914).

Amasa resectus [sic] (Eggers): Wood and Bright 1992: 684.

Xyleborus opacicauda Eggers, 1940: 136. Synonymy: Kalshoven 1959b: 159.

Type material.

Syntype Xyleborus resectus (MIZ, 1).

New records.

China: Hainan, Wu-zhi-shan Town, 18.902N, 109.663E, 703 m, 2.xii.2016, Tian-Shang, Lv-Jia (RABC, 2).

Diagnosis.

2.85-3.2 mm long (mean = 2.94 mm; n = 4); 2.29-2.38 × as long as wide. This species is distinguished by the pronotum appearing basic (type 2) when viewed dorsally, anterior margin serrate; declivital surface shagreened, dull, opaque; declivity glabrous; declivital interstriae 1-3 multiseriate granulate, granules strongly confused; and declivital interstriae 2-4 flat.

Similar species.

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

Distribution.

China (Hainan), Indonesia (Java, Sumatra), East Malaysia, New Guinea, Sri Lanka, Thailand.

Host plants.

Recorded by Kalshoven (1959b) from five genera in five different families. Evidently polyphagous.

Remarks.

Hulcr and Cognato (2013) synonymized Xyleborus fulgens Schedl, 1975c with this species, but we believe it to be distinct. Hence it is not included in the list of synonyms.

Figures

Figure 9. Dorsal, lateral and declivital view of Amasa lini holotype, 3.5 mm (A, B, I), A. opalescens lectotype, 4.5 - 4.8 mm (C, D, J), A. resecta, 2.85 - 3.2 mm (E, F, K), and A. schlichii, 2.9 - 3.5 mm (G, H, L).