Island-endemic
Guides
Actia dimorpha
Actia dimorpha is a species of tachinid fly in the family Tachinidae, described by O'Hara in 1991 from specimens collected on Sapelo Island, Georgia, United States. Tachinid flies are parasitoids, with larvae typically developing inside other insects. The specific epithet "dimorpha" suggests sexual dimorphism in this species, though details of this dimorphism have not been documented in available sources. The species is known only from its type locality and has received limited study since its original description.
Agrotis arenarius
Sable Island Cutworm Moth
Agrotis arenarius is a noctuid moth endemic to Sable Island, Nova Scotia, Canada. First described by Neil in 1983, this species is known from only a handful of observations. Its restricted distribution to a single small island makes it one of the most geographically limited Agrotis species. The specific epithet "arenarius" refers to the sandy habitat of its island home.
Coproporus pulchellus
Coproporus pulchellus is a species of rove beetle in the family Staphylinidae, originally described by Erichson in 1839 under the basionym Tachinus pulchellus. It belongs to the subfamily Tachyporinae and tribe Vatesini. The species has been recorded from several islands in the Azores archipelago (Faial, Flores, Graciosa, Pico, São Jorge).
Cymaenes trebius
Cymaenes trebius is a synonym of Cymaenes odilia, a skipper butterfly in the family Hesperiidae. It was described by Mabille in 1891. The species is known from distribution records on San Andrés, a Colombian island in the Caribbean Sea. As a synonym, this name is no longer in active use for current taxonomy.
Eleodes inculta
Island Darkling Beetle
A darkling beetle in the family Tenebrionidae, known from limited observations primarily on islands. The species belongs to the diverse genus Eleodes, commonly referred to as clown beetles or stink beetles due to their defensive behaviors. Available records indicate a restricted distribution with relatively few documented observations.
Erechthias
fungus moths
Erechthias is a genus of small moths in the family Tineidae, comprising the type genus of subfamily Erechthiinae. The genus encompasses more than 150 species with disputed circumscription, including several previously recognized genera now treated as synonyms. Species occur across tropical and subtropical regions worldwide, with some showing pan-global distributions while others are highly endemic.
Loricula elegantula
Loricula elegantula is a minute true bug in the family Microphysidae, a group commonly known as minute pirate bugs or microphysid bugs. The species was originally described as Anthocoris elegantula by Bärensprung in 1858 before being transferred to the genus Loricula. It is known from the Azores archipelago in the North Atlantic, with records from five islands: Faial, Flores, Graciosa, Pico, and São Miguel. As a member of the Microphysidae, it likely shares the family's predatory habits, though specific ecological details for this species remain poorly documented.
Pseudosermyle catalinae
Catalina walkingstick
Pseudosermyle catalinae, commonly known as the Catalina walkingstick, is a species of stick insect in the family Diapheromeridae. It was described by Rentz and Weissman in 1981. The species is endemic to Santa Catalina Island, California, making it a geographically restricted phasmid with limited known observations.
Tetramorium lanuginosum
Downy Pennant Ant
Tetramorium lanuginosum is a species of ant in the family Formicidae, first described by Mayr in 1870. The species is distributed across the Caribbean region and the Galápagos Islands, with confirmed presence in Antigua and Barbuda, Barbados, Cuba, and Spain (likely referring to the Canary Islands). It belongs to the genus Tetramorium, a diverse group of myrmicine ants commonly known as pavement ants or pennant ants. The common name "Downy Pennant Ant" refers to the species' characteristic appearance.
Xantholinus longiventris
Long-bellied Rove Beetle
Xantholinus longiventris is a species of rove beetle in the family Staphylinidae, first described by Heer in 1839. It is known from the Azores archipelago, with records from five islands: Faial, Flores, Graciosa, Pico, and São Jorge. The species is recognized by iNaturalist as the Long-bellied Rove Beetle and has accumulated over 200 observations, suggesting it is relatively well-documented for an island endemic. Its taxonomic status shows some discrepancy between sources, with Catalogue of Life listing it as a synonym while GBIF treats it as accepted.