Works in Costa Rica

Errant polychaetes of the family Sigalionidae are active, scale-covered predators inhabiting sandy marine bottoms. Knowledge of this family in tropical America is scarce, with onl…

As part of our Neotropical Dyopsinae Project, a revision of the Neotropical genus Sosxetra Walker is proposed. Morphological and molecular evidence challenge its previous monotypi…

Waterfalls have not been thoroughly studied as a habitat for freshwater macroinvertebrates, although they appear to be an exclusive environment for taxa with traits suited to thes…

Costa Rica is one of the most biodiverse countries in the world, hosting almost 4% of all known mammals. Although the local mammals have undoubtedly been more investigated than th…

A biodiversity and distribution analysis of the beetle families Bolboceratidae and Geotrupidae, and the subfamily Scarabaeinae (Scarabaeidae) of Honduras is presented for the firs…

The Neotropical species of the hoverfly genus Serichlamys Curran, 1925 are revised. A total number of 14 Neotropical species are recognized, two of which were previously described…

The rather small millipede family Rhachodesmidae is endemic to Central America, and is represented in Costa Rica by only four species of the genus Aceratophallus, including A. log…

The parasitoid wasp genus Dolichogenidea is currently the second most speciose within the subfamily Microgastrinae (Hymenoptera: Braconidae), with 366 world species known so far, …

Within the diverse genus Lasioglossum, the subgenus Eickwortia as currently understood, encompasses three characteristic species from mountainous areas in Mexico and Central Ameri…

Species of the thorny lacewing subfamily Symphrasinae (Neuroptera: Rhachiberothidae) are revised. Prior to this work, 42 species were known in the genera Anchieta Navás, 1909, Ple…

More than a decade has passed since the publication of the only world checklist available for Onychophora. During this period, numerous nomenclatural acts and taxonomic changes ha…

Animal constructions are the outcomes of complex evolutionary, behavioural, and ecological forces. A brief review of diverse animal builders, the materials used, and the functions…

The parasitoid wasp genus Alphomelon Mason, 1981 is revised, based on a combination of basic morphology (dichotomous key and brief diagnostic descriptions), DNA barcoding, biology…

The microcaddisfly (Trichoptera: Hydroptilidae) fauna is catalogued from a review of more than 1,300 literature citations through the end of 2020 to include 2,665 currently recogn…

Brejos de Altitude are evergreen seasonal forests, associated with plateau regions in the middle of the Caatinga domain in Northeast Brazil, which possibly acted as biological cor…

None

Myotis comprises a diverse group of vespertilionid bats with worldwide distribution. Neotropical Myotis have an accentuated phenotypic conservatism, which makes species delimitati…

Species level identification of Agromyzidae based on morphology is often challenging due to their small size and morphological homogeneity. DNA barcoding has been used regularly t…

Twenty-nine species are treated, most of which have host caterpillar and food plant records, and all but one are new to science. The first host record for the agathidine genus Amp…

The genus Romaleosyrphus Bigot is reviewed, including the description of seven new species (R. argosi Moran, sp. nov., R. bigoti Moran, sp. nov., R. drysus Moran, sp. nov., R. nep…

A taxonomic revision of the genus Cenophengus LeConte, 1881 (Coleoptera: Phengodidae) is provided, including new data on geographic ranges of the species. This is the first time t…

The cosmopolitan subfamily Acidocerinae (Coleoptera: Hydrophilidae) is one of the largest and most taxonomically challenging lineages of water scavenger beetles. Recent phylogenet…

A very large, new, and distinctive species of Conotrachelus Dejean is described from Área de Conservación Guanacaste, Costa Rica. Conotrachelus terryerwini sp. nov. (type locality…

The Saturniidae is one of the most emblematic families of moths, comprising nearly 3000 species distributed globally. In this study, DNA barcode analysis and comparative morpholog…

This study documents a comprehensive taxonomic treatment of the New World Ummidia species. At the onset of this work the genus comprised 27 species and one subspecies with a cosmo…

A revision of the Central American species of the genus Brachiacantha was undertaken to update the knowledge of the Central American species of the genus. Material of several coll…

The species of the genus Phoneutria (Ctenidae), also called banana spiders, are considered amongst the most venomous spiders in the world. In this study we revalidate P. depilata …

Our knowledge of the recently described genus Eriastichus La Salle is greatly enhanced with the addition of 48 new species: E. acribis sp. nov., E. aphritis sp. nov., E. cluridis …

Three new genera are described: Michener (Proteropinae), Bioalfa (Rogadinae), and Hermosomastax (Rogadinae). Keys are given for the New World genera of the following braconid subf…

Forty-nine new species of Neotropical Exosternini are described in this work, representing the newly recognized Phelister blairi species group, within the large, heterogeneous tax…

Two new species of Bohayella Belokobylskij, 1987 from Costa Rica are described: Bohayella geraldinae Kang, sp. nov. and Bohayella hansoni Kang, sp. nov. These are new distribution…

The nymph of Cloeodes danta sp. nov. is described from male and female nymphs collected from highland streams in the Caribbean Slope of the Costa Rica Central Volcanic Mountain Ra…

The world Rhinophoridae are catalogued, recognising 33 genera and 177 species. Nomenclatural information is provided for all genus-group and species-group names, including lists o…

The species of the Neotropical hoverfly genus Peradon Reemer, 2013 are revised, based on morphological characters with aid of mitochondrial DNA barcodes. The resulting number of v…

The descriptive taxonomic study reported here is focused on Glyptapanteles, a species-rich genus of hymenopteran parasitoid wasps. The species were found within the framework of t…

The genus Enderleiniella Becker, 1912 is revised. The genus is distinguished on the basis of a somewhat flattened head with the inner vertical setae located anteromedially to the …

Two new endemic species of scarab beetles are described from Costa Rica, Onthophagus humboldti sp. nov. and Uroxys bonplandi sp. nov. Onthophagus humboldti sp. nov. is also the te…

Aprica Goldstein, gen. nov. is described to accommodate Xanthia patula Druce, 1898. Recent discovery of its larva, which has been recorded eating foliage of species in six familie…

The genus Neophyllaphis (Takahashi) (Aphididae: Neophyllaphidinae) is composed of 18 species; however, in the Americas only nine species have been reported previously. A new speci…

Quantitative collecting efforts over the last several decades in Costa Rica have resulted in many new species of insects. The Arthropods of La Selva projects included collecting f…

Lithobates warszewitschii is a species of ranid frog distributed from southern Honduras to Panama. This species suffered severe population declines at higher elevations (above 500…

The first species of Dolichogenidea (Hymenoptera: Braconidae, Microgastrinae) with the second mediotergite broadly quadrate to rectangular are revised, and eight new species from …

Three new species and a new genus of majoid crabs from deep waters in the eastern Pacific are described and illustrated using morphological and molecular data. A new species of in…

We here propose a new, monotypic genus, Amiga Nakahara, Willmott & Espeland, gen. n., to harbor a common Neotropical butterfly, described as Papilio arnaca Fabricius, 1776, and hi…

The genus Rhyncholepta Bergroth, 1911 (Hemiptera: Heteroptera: Pentatomidae: Pentatominae: Chlorocorini) is redescribed and five species-group taxa are recognized, keyed, their di…

Zetekella and Minitingis (Heteroptera, Tingidae) are morphologically similar genera, each comprising two species. The latter was already considered a junior synonym of the former,…

The Neotropical genus Lycinella Gorham, 1884 is revised. Lycinella opaca Gorham, 1884 and Lycinella parvula Gorham, 1884 are redescribed and illustrated. Six new species are descr…

Chytonidia Schaus, 1914, is one of two noctuine genera originally described by Schaus that includes species recently found to feed on fern foliage (Pteridophyta) as larvae. By exa…

Lophomyra Schaus, 1911 (Noctuidae) is the smaller of two noctuid genera originally described by Schaus that include species recently associated with ferns (Pteridophyta), in this …

Honduranura gen. n. and the type species H. centraliamericana sp. n. are described and illustrated. The new genus shows the characters of Sensillanurini Cassagnau, 1983 tribe and …