Immanus Hulcr & Cognato, 2013

Lin, Wei, Li, You & Meng, Ling-Zeng, 2023, First record of the genus Immanus Hulcr & Cognato (Coleoptera: Curculionidae: Scolytinae: Xyleborini) from China, with description of a new species, Zootaxa 5352 (3), pp. 433-438 : 434

Immanus Hulcr & Cognato, 2013

Type species. Xyleborus colossu s Blandford, 1896

Diagnosis. Large, stout species, 4.0‒9.0 mm long, pronotum anterior margin with a row of 4‒8 coarse asperities, pronotal disc asperate, mycangial tufts absent, procoxae contiguous; protibia without or with reduced socketed teeth, protibia posterior side flat without granules, declivity obliquely or steeply truncate or convex.

The most similar genus to Immanus is Ambrosiodmus Hopkins , based on morphological characters. Immanus can be distinguished by the larger size (not less than 4.0 mm vs. not exceeding 4.5 mm), asperities on anterior margin of the pronotum distinctly larger than those on anterior slope, the reduced or absent protibial denticles ( Beaver et al. 2019). Immanus is also similar to Beaverium Hulcr & Cognato and Terminalinus Hopkins , but differs by the stouter body and the reduced or absent protibial denticles ( Hulcr & Cognato 2013; Smith et al. 2022b).

Similar genera. Ambrosiodmus , Beaverium and Terminalinus .

Distribution. Australia, China (Yunnan), Indonesia, Japan, Malaysia, Papua New Guinea, Philippines, Thailand, Vietnam.