''Otobius'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

in the soft-bodied

tick Ticks (order Ixodida) are parasitic arachnids that are part of the mite superorder Parasitiformes. Adult ticks are approximately 3 to 5 mm in length depending on age, sex, species, and "fullness". Ticks are external parasites, living by ...

family,

Argasidae The Argasidae are the family of soft ticks, one of the three families of ticks. The family contains 193 species, although the composition of the genera is less certain, and more study is needed before the genera can become stable. The currently a ...

. While similar to the genus ''

Ornithodoros ''Ornithodoros'' is a genus in the soft-bodied tick family, Argasidae. Physiology The opening between the midgut and hindgut has been lost, making the ticks unable to pass digestive waste products out of their bodies. Taxonomy The Linnean name ...

'' it is characterized by a

vestigial Vestigiality is the retention, during the process of evolution, of genetically determined structures or attributes that have lost some or all of the ancestral function in a given species. Assessment of the vestigiality must generally rely on co ...

hypostome In zoology, the hypostome can refer to structures in distinct animal groups: *Hypostome (trilobite), the ventral mouthpart plate in trilobites *Hypostome (tick) The hypostome (also called the maxilla, radula, or labium) is a calcified harpoo ...

in adults, despite being developed in nymphs, in addition to the absence of both eyes and hood.

Species

Three species of ''Otobius'' are recognized.''Otobius'' N.Banks, 1912 in GBIF Secretariat (2017). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2019-01-22.Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2019. The Animal Diversity Web (online). Accessed at https://animaldiversity.org/accounts/Otobius/classification/ *'' Otobius lagophilus''

Cooley Cooley may refer to: *Cooley (surname), a surname (and a list of people with the surname) *Cooley Distillery, an Irish whiskey distillery *Cooley LLP, a Silicon Valley-based law firm *Cooley Peninsula, Ireland *Cooley High School, Detroit, Michigan, ...

Kohls Kohl's (stylized in all caps) is an American department store retail chain, operated by Kohl's Corporation. it is the largest department store chain in the United States, with 1,165 locations, operating stores in every U.S. state except Hawa ...

, 1940 *''

Otobius megnini ''Otobius megnini'', also known as the spinose ear tick, is a soft-bodied tick that is only parasitic in the larval and nymphal stages. As its common name suggests, the spinose ear tick's parasitic forms are usually found within the ears of the d ...

'' Dugès, 1883 *'' Otobius sparnus'' Kohls & Clifford, 1963

References

Acari genera Argasidae {{acari-stub