Relict-taxon
Guides
Agyrtes longulus
Agyrtes longulus is a species of primitive carrion beetle in the family Agyrtidae. It belongs to a relict group of beetles considered among the most basal lineages of Staphylinoidea. The species has been documented in the Pacific Northwest and western Canada.
Euparagiinae
Euparagiinae is a rare subfamily of wasps in the family Vespidae, containing a single extant genus Euparagiia. Once cosmopolitan in distribution dating back to the Early Cretaceous, the group is now geographically relict, restricted to desert regions of the southwestern United States and northwestern Mexico. The subfamily is the sister group to all other Vespidae and possesses distinctive wing venation not found elsewhere in the family.
Ropronia garmani
Ropronia garmani is a species of parasitoid wasp in the family Roproniidae, a small and poorly known group of Hymenoptera. The species was described by William H. Ashmead in 1898. Roproniidae are considered relictual wasps with uncertain phylogenetic placement, sometimes allied with Stephanidae or other basal hymenopteran lineages. Very few specimens of R. garmani have been documented, with only 8 observations recorded on iNaturalist as of the knowledge cutoff.
Trogloraptor
Cave robber
Trogloraptor is a genus of large cave-dwelling spiders endemic to southwestern Oregon, representing the sole genus in the family Trogloraptoridae. The genus contains one described species, Trogloraptor marchingtoni, distinguished by unique hook-like claws on the tarsi of its legs. Discovered in 2010 and described in 2012, this represents one of only three new spider families described since 1990. The genus name combines Greek and Latin roots meaning "cave robber," referencing both its habitat and predatory appendages.