Tricosa cattienensis Cognato, Smith & Beaver, 2020

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

Tricosa cattienensis Cognato, Smith & Beaver, 2020 Fig. 77A, B, I

Tricosa cattienensis Cognato, Smith & Beaver, 2020 (in Cognato et al. 2020a): 548.

Type material.

Holotype (MSUC), paratypes (IZAS, 1; MSUC, 1; RABC, 3; UFFE, 1).

Diagnosis.

2.7-3.1 mm long (mean = 2.98 mm; n = 5); 2.5-2.7 × as long as wide. This species is distinguished by the declivital slope gentle; declivital posterolateral margins rounded; elytral disc and declivity shiny; elytral interstriae granulate, not tuberculate; declivital striae weakly impressed; and pronotum anterior margin with a clear row of six moderate serrations.

It can be further distinguished from T. indochinensis by the smaller size and stouter form.

Similar species.

Tricosa indochinensis .

Distribution.

China (Hong Kong), Japan, Thailand, Vietnam.

Host plants.

Known only from Pterocarpus ( Fabaceae ), Machilus ( Lauraceae ), and a cut liana ( Cognato et al. 2020a).

Figures

Figure 77. Dorsal, lateral and declivital view of Tricosa cattienensis holotype, 2.7 - 3.1 mm (A, B, I), T. indochinensis holotype, 3.2 - 3.4 mm (C, D, J), T. jacula holotype, 3.2 mm (E, F, K), and T. metacuneolus paratype, 2.4 - 2.5 mm (G, H, L).