A new species of Stenosternum (Mesostigmata: Antennophorina: Hoplomegistidae), the first trigynaspid mite from Korea, including the description of immature stages

Hoplomegistidae are large trigynaspid mites found as adults on passalid beetles in Africa, Southeast Asia, and Central and South America. The family comprises ten species, of which only two species occur in Southeast Asia, both described recently from the Southern part of China. Here, we describe a new species, Stenosternum leptaulax n. sp., found on Leptaulax koreanus (Coleoptera: Passalidae) from the Republic of Korea. This is the first report of a trigynaspid mite from Korea. Our description also includes the larva, protonymph and deutonymph, representing the first description of the immatures for this family.