Wikipedia
Otobius
Otobius is a genus in the soft-bodied tick family, Argasidae. While similar to the genus Ornithodoros it is characterized by a vestigial hypostome (tick) in adults, despite being developed in nymphs, in addition to the absence of both eyes and hood.
There are two recognized species of Otobius: Otobius lagophilus and Otobius megnini.