Nicagini
Guides
Aesalinae
Aesalinae is a subfamily of stag beetles (Lucanidae) established by William Sharp Macleay in 1819, with the type genus Aesalus. The subfamily contains three tribes: Aesalini (seven extant genera including Aesalus), Ceratognathini (four extant genera including Ceratognathus), and Nicagini (monotypic genus Nicagus). The group includes both extant and fossil taxa, with described fossil genera dating from the Jurassic and Cretaceous periods.
Nicagus
Nicagus is a monogeneric genus of stag beetles (family Lucanidae) comprising three described species: N. japonicus (Japan), N. obscurus (eastern and central North America), and N. occultus (western Texas). The genus represents the tribe Nicagini within subfamily Aesalinae. The discovery of N. occultus in unvegetated sand dunes marked an unexpected range extension and unusual habitat for the family.