Xylosandrus subsimilis (Eggers, 1930)

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

Xylosandrus subsimilis (Eggers, 1930) Fig. 97E, F, I

Xyleborus subsimilis Eggers, 1930: 186.

Xylosandrus subsimilis (Eggers): Wood and Bright 1992: 800.

Type material.

Holotype (FRI), paratype (NHMW, 1).

New records.

India: Arunachal Pradesh, Hunli vicinity, 28°19'32"N, 95°57'31"E, 1300 ± 100 m, 26.v-1.vi.2012, L. Dembický (ZFMK, 1).

Diagnosis.

2.5-2.9 mm long (mean = 2.64 mm; n = 5); 1.79-2.0 × as long as wide. This species is distinguished by its moderate size; elytral disc flat, longer than declivity; declivital face steep, abruptly separated from disc; elytra truncate; posterolateral margins of elytra carinate to interstriae 7; declivital face with four apparent granulate striae (striae 5 short, converging with striae 4 forming a loop); declivital face flattened, depressed below declivital margins; declivital striae and interstriae setose, setae recumbent, thick, less than 1/2 width of an interstria; interstriae granulate, granules multiseriate, confused strial granules at least 2 × larger than those of interstriae; pronotum longer than wide, from dorsal view conical frontally (type 6) and lateral view taller (type 2), summit at basal 1/4, basal 1/4 shagreened, dull, densely punctate; and broad, dense mycangial tuft on the pronotal base.

Similar species.

Xylosandrus brevis , X. jaintianus , X. subsimiliformis .

Distribution.

China (Hainan, Yunnan), India (Arunachal Pradesh*, Assam, Meghalaya, West Bengal), Laos, Myanmar, Thailand.

Host plants.

Recorded from five different families ( Maiti and Saha 2004; Dole and Cognato 2010), and presumably polyphagous.

Figures

Figure 97. Dorsal, lateral and declivital view of Xylosandrus spinifer holotype, 3.3 mm (A, B, G), X. subsimiliformis holotype, 2.45 - 3.0 mm (C, D, H), and X. subsimilis, 2.5 - 2.9 mm (E, F, I).