Truncaudum bullatum

Taxonomic history

Truncaudum bullatum Smith, Beaver & Cognato 2020 (in Smith et al. 2020bSmith et al. 2020b:
Smith SM, Beaver RA, and Cognato AI. 2020b. A monograph of the Xyleborini (Coleoptera, Curculionidae, Scolytinae) of the Indochinese Peninsula (except Malaysia) and China. ZooKeys 983: 1-442. https://doi.org/10.3897/zookeys.983.52630): 321.

Diagnosis

1.9 mm long (n = 1); 2.71 times as long as wide. This species is distinguished by the declivitydeclivity:
downward slope of either the pronotum or elytra
abruptly truncatetruncate:
appearing cut off or suddenly shortened
, surrounded by a complete costacosta:
elevated ridge that is rounded at its crest, not necessarily with sharp appearance
and margined with a row of variably tubercles; declivitaldeclivital:
pertaining to the elytral declivity
interstriae 1 tumescent; and small size.

This species is strikingly similar to many small Cyclorhipidion species and can be distinguished by the type 2 antennalantennal:
pertaining to the antennae
club (Cyclorhipidion has types 3, 4, 5).

May be confused with

Given the small size of the species, it most closely resembles species in the following genera: Amasa, Arixyleborus, Cyclorhipidion, Pseudowebbia, and Webbia.

Distribution

China (Fujian)

Host plants

unknown (Smith et al. 2020bSmith et al. 2020b:
Smith SM, Beaver RA, and Cognato AI. 2020b. A monograph of the Xyleborini (Coleoptera, Curculionidae, Scolytinae) of the Indochinese Peninsula (except Malaysia) and China. ZooKeys 983: 1-442. https://doi.org/10.3897/zookeys.983.52630)

DNA data

specimens not available for sequencing