Actenoncus solidicornis ( Tian & Deuve, 2003 ), 2025

Cheong, Loong Fah, 2025, On nomenclature and taxonomy of some Carabidae and Tenebrionidae from Singapore, with descriptions of new species of the genera Uloma Dejean, 1821 and Promethis Pascoe, 1869, Raffles Bulletin of Zoology 73, pp. 233-242 : 235

Actenoncus solidicornis ( Tian & Deuve, 2003) , new combination

Orthogonius solidicornis Tian & Deuve, 2003: 45 .

Remarks. Actenoncus can be distinguished from other Orthogoniine genera by these characters: the eyes are very large and very prominent, the sutural angle on the elytral apex bears a small but evident denticle, and the elytral intervals are without setiferous pore (in other genera, at least the 3 rd interval has setiferous pores). The absence of a median tooth on the right mandible is no longer considered a diagnostic character of this genus ( Tian & Deuve, 2009). Orthogonius solidicornis should be transferred to Actenoncus according to the revised definition of the generic characters of Actenoncus , but this species was somehow overlooked in both the 2009 revision of Actenoncus ( Tian & Deuve, 2009) , as well as the catalogue of the Oriental Orthogonini ( Tian & Deuve, 2006).