Colombia es un país con alta diversidad de hormigas, sin embargo, nuevos taxones se siguen registrando para el país. Cuarenta y siete nuevos registros se relacionan aquí, todos dentro de la subfamilia Myrmicinae: Uno para los géneros Adelomyrmex, Allomerus, Kempfidris, Megalomyrmex, Octostruma y Tranopelta; dos para Rogeria; cinco para Myrmicocrypta; seis para Procryptocerus; siete para Cephalotes; diez para Pheidole y once para Strumigenys. Tres de esos nuevos registros corresponden a especies invasoras, Pheidole indica, Strumigenys emmae y Strumigenys membranifera. Tres especies se citan por primera vez para América del Sur: Pheidole sicaria, Procryptocerus tortuguero y Strumigenys manis. El género Kempfidris se registra por primera vez para Colombia. Se ofrecen comentarios para todas las especies. La diversidad de hormigas en Colombia comprende 104 géneros y casi 1.100 especies.
BackgroundThis paper presents an updated list of soil ants of the Colombian Amazon collected in three different river basins: the Amazon, the Caquetá and the Putumayo. The list includes 10 subfamilies, 60 genera and 218 species collected from TSBF monoliths at four different depths (Litter, 0 - 10 cm, 10 - 20 cm and 20 - 30 cm). This updated list increases considerably the knowledge of edaphic macrofauna of the region, due to the limited published information about soil ant diversity in the Colombian Amazon region.New informationThis is the first checklist of soil ant diversity of the Colombian Amazon region. Six new records of species for Colombia are exposed: Acropyga
tricuspis (LaPolla, 2004), Typhlomyrmex
clavicornis (Emery, 1906), Typhlomyrmex
meire (Lacau, Villemant & Delabie, 2004), Cyphomyrmex
bicornis (Forel, 1895), Megalomyrmex
emeryi (Forel, 1904) and Myrmicocrypta
spinosa (Weber, 1937), most of them corresponding to subterranean ants.
Even though Colombia has high levels of ant species richness in the Neotropical region, this richness continues to increase. New records of the ant subfamilies Amblyoponinae, Dolichoderinae, Dorylinae, Myrmicinae, and Ponerinae are presented. Two species of Fulakora, two species of Azteca, one species of Cylindromyrmex, 25 species of Myrmicinae belonging to 12 genera (Acanthognathus, Basiceros, Daceton, Eurhopalothrix, Hylomyrma, Mycetomoellerius, Mycetophylax, Mycocepurus, Octostruma, Pheidole, Rogeria, and Talaridris), and one species of Leptogenys are registered for the first time for Colombia. Five species are new records for South America. For each species, the geographical distance of the record closest to the Colombian locality is offered. Several factors, such as access to previously unexplored conserved areas, sampling techniques that cover heterogeneous microhabitats such as leaf litter, and many more taxonomic researches have allowed the knowledge of ant fauna in Colombia to continue growing.
The genus Metopiellus (Staphylinidae, Pselaphinae) is confirmed in Colombia with the description of Metopiellus guananosp. nov. from the northern Amazon. Major diagnostic characters, a distributional map, and ecological data are given. Finally, a previous taxonomic key to Metopiellus is updated to include the new species.
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. The ant genus Megalomyrmex is documented as a new host for Caenocholax fenyesi. A short review of the ants parasitized by Strepsiptera in the Neotropics is presented. Currently, the order in Colombia is known for the families Halictophagidae, Myrmecolacidae and Stylopidae.
The genus Metopiellus (Staphylinidae: Pselaphinae) is confirmed in Colombia. A new ant-mimetic species of Metopiellus, Metopiellus guanano sp. nov. is described from northern Amazon. Major diagnostic characters and ecological data are given. A new symbiotic association (rove beetle and fungus-growing ants) is hypothesized for the genus Apterostigma (Formicidae: Myrmicinae) and recorded for the first time for the country.
The Galápagos ant fauna has long been understudied, with the last taxonomic summary being published almost a century ago. Here, we provide a comprehensive and updated overview of the known ant species of the Galápagos Islands with updated species distributions. The list is based on an extensive review of literature, the identification of more than 382,023 specimens deposited in different entomological collections, as well as recent expeditions to the islands. The fauna is composed of five subfamilies (Dolichoderinae, Dorilynae, Formicinae, Myrmicinae and Ponerinae), 22 genera and 53 species, though 3 of these species are considered dubious records. Finally, we provide an illustrated identification key of the species in the archipelago.
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