The ants of the Galápagos Islands (Hymenoptera, Formicidae): a historical overview, checklist, and identification key.

The Galápagos ant fauna has long been understudied, with the last taxonomic summary being published almost a century ago. Here, a comprehensive and updated overview of the known ant species of the Galápagos Islands is provided with updated species distributions. The list is based on an extensive review of literature, the identification of more than 382,000 specimens deposited in different entomological collections, and recent expeditions to the islands.

A new species of (Coleoptera, Staphylinidae, Pselaphinae) from the northern Colombian Amazon.

The genus (Staphylinidae, Pselaphinae) is confirmed in Colombia with the description of from the northern Amazon. Major diagnostic characters, a distributional map, and ecological data are given. Finally, a previous taxonomic key to is updated to include the new species.

Deep time extinction of largest insular ant predators and the first fossil Neoponera (Formicidae: Ponerinae) from Miocene age Dominican amber.

Background: Ponerine ants are almost exclusively predatory and comprise many of the largest known ant species. Within this clade, the genus Neoponera is among the most conspicuous Neotropical predators. We describe the first fossil member of this lineage: a worker preserved in Miocene-age Dominican amber from Hispaniola.

Strepsiptera from Colombia: First record of the genus Strichotrema Hofeneder (Myrmecolacidae) and a new host-parasitoid association with Megalomyrmex cyendyra (Hymenoptera: Formicidae).

An overview of the order Strepsiptera in Colombia is provided. The family Halictophagidae is recorded for the first time based on a female parasitizing a treehopper Ceresini (Membracidae). Strichotrema beckeri is a new record for the country.