species distribution

Landmark review confirms 227 mammal species in Honduras, the country’s most comprehensive assessment in nearly three decades

The study also forecasts that as many as 28 further species could eventually be confirmed in the country.

An eight-year international research effort has produced the most comprehensive review of Honduras’ mammals since 1998, verifying 227 native species across 146 genera and 42 families, along with three introduced rodent species. The study, published in the open-access journal ZooKeys, also forecasts that as many as 28 further species could eventually be confirmed in the country, bringing the potential total to 258.

Manatee, photographed by Daniel Gonzalez-Socoloske.

The research was led by Manfredo A. Turcios-Casco of the Asociación para la Sostenibilidad e Investigación Científica en Honduras (ASICH) and the Universidade Estadual de Santa Cruz in Brazil, together with 14 co-authors from institutions across Honduras, the United States, Brazil, Guatemala and Costa Rica, including Panthera Honduras, the Smithsonian Institution and the Wildlife Conservation Society. The resulting work spans nearly 200 pages of species accounts, distribution data and conservation summaries.

The project began when Turcios-Casco was a master’s student researching the conservation status of Honduran xenarthrans:

“At that time, I realised something surprising: despite Honduras being one of the most biodiverse countries in Central America, its mammal fauna had not been comprehensively reviewed since 1998.

What began with a team of four researchers grew into a collaboration spanning museum curators, taxonomists, field biologists and conservation practitioners across multiple countries.”

Compiling the review meant verifying more than 300,000 records drawn from museum collections, scientific publications, technical reports and previously unpublished field observations dating back to the 1960s.

Mormoops megalophylla. Image credit: Manfredo A. Turcios-Casco.

“The greatest challenge was undoubtedly the verification process. Every record (and there were more than 300,000) had to be evaluated critically,” Turcios-Casco said, noting that shifting taxonomy meant the team was still updating species accounts just days before the manuscript’s final submission.

Among the review’s more unexpected findings was how little is known about some of Honduras’ most familiar mammals. “For some mammals, including squirrels, raccoons, and several small rodents, there were no modern distribution maps available,” Turcios-Casco noted. Even regionally widespread species, such as opossums and skunks, remain poorly documented within the country.

Nyctomys sumichrasti. Image credit: Manfredo A. Turcios-Casco.
Spilogale angustifrons. Image credit: Manfredo A. Turcios-Casco.
Caluromys derbianus. Image credit: Manfredo A. Turcios-Casco.

Alongside the species accounts, the review provides conservation summaries intended to guide research priorities and policy decisions:

“Because conservation begins with knowledge. One of the biggest challenges in biodiversity conservation is that we often want to protect species before we fully understand them.”
Turcios-Casco

Camera traps photos by Panthera-Honduras – White lipped peccaries.
Giant anteater.
Tapirs.
Puma.

The work also draws on cultural knowledge, incorporating common names used by Indigenous peoples and local communities alongside the scientific record.

“Rather than simply compiling species records, we tried to tell the story of Honduras’ mammals.”
Turcios-Casco

Looking ahead, the authors hope the review will serve as a foundation for the next generation of Honduran biologists.

“In that sense, the review is both a summary of what we know and a reminder of how much there is left to learn about the natural heritage of Honduras.
Turcios-Casco

Cover image:

Howler monkey, photographed by Daniel Gonzalez-Socoloske.

Original source:

Turcios-Casco MA, Castañeda F, Wilson DE, Miller B, Gonzalez-Socoloske D, Ramos EA, King TW, LaVal RK, Ordóñez-Garza N, Ordoñez D, Graciolli G, Thornton D, Martínez M, Estrada-Andino NM, Ávila-Palma HD (2026) Taxonomy, natural history, and conservation of the mammals of Honduras. ZooKeys 1288: 1–193. https://doi.org/10.3897/zookeys.1288.129555

Total of 21 new parasitoid wasps following the first ever revision of their genus

As many as twenty-one species of parasitoid wasps are described as new to science, following the first ever revision of their genus since its establishment back in 1893.

The study simultaneously updates the count of species within the genus (Chromoteleia) to 27 in total, produces a systematic revision of the world’s representatives of this group of wasps, expands their biogeographic knowledge, and clarifies their generic concept.

The monograph is published in the open access journal ZooKeys by a team of US and Canadian scientists, led by Hua-yan Chen, graduate student at the Ohio State University.

The wasps in the genus Chromoteleia are easily distinguished thanks to their large size in combination with their vivid colouration. Compared to other species in the family of platygastrid wasps, which normally measure merely 1 – 2 mm in length, the species in the studied genus range between 3 and 9 mm. Their uncommonly large, robust and elongated bodies is why the scientists assume that these wasps likely parasitise the eggs of orthopterans, such as grasshoppers, crickets and katydids.

A focal point in the study is the intriguing distribution of the wasps. While the genus is widespread throughout continental Mesoamerica, Central America and South America, and its distribution ranges from the Mexican state of Jalisco in the north all the way to Itapúa Department in Paraguay and Paraná in southern Brazil, the species C. congoana is a lone representative of the genus in Africa.

*The ‘lone’ African representative of the genus, Chromoteleia congoana.*

While dispersal from South America to Africa has been observed in the past in another genus of parasitoid wasps (Kapala), the scientists are not willing to reject the possibility of Chromoteleia wasps having been widely distributed across the Old World during a previous geological epoch. Such phenomenon, also known as a relict population, would not mean that the wasp group has subsequently ‘conquered’ the Neotropics and current species inhabiting the New World are rather remainders of once widespread insects.

To conclude their findings, the scientists examined specimens hosted in collections at twenty natural history institutions from around the globe, including the American Entomological Institute; American Museum of Natural History; Bernice P. Bishop Museum; California Academy of Sciences; Canadian National Collection of Insects; California State Collection of Arthropods; Florida State Collection of Arthropods; Instituto Alexander von Humboldt; Illinois Natural History Survey; Kansas University’s Natural History Museum; Museo del Instituto de Museo del Instituto de Zoologia Agricola; Museum National d’Histoire Naturelle; Museu Paraense Emílio Goeldi; Lund Museum of Zoology at Lund University; Triplehorn Insect Collection at the Ohio State University; South African Museum; Texas A&M University’s Insect Collection; Bohart Museum of Entomology; University of Colorado; and Smithsonian National Museum of Natural History.

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Original source:

Chen H-y, Talamas EJ, Valerio AA, Masner L, Johnson NF (2018) Revision of the World species of the genus Chromoteleia Ashmead (Hymenoptera, Platygastridae, Scelioninae). ZooKeys 778: 1-95. https://doi.org/10.3897/zookeys.778.25775

Museum collection reveals distribution of Carolina parakeet 100 years after its extinction

While 2018 marks the centenary of the death of the last captive Carolina parakeet – North America’s only native parrot, a team of researchers have shed new light on the previously known geographical range of the species, which was officially declared extinct in 1920.

Combining observations and specimen data, the new Carolina parakeet occurrence dataset, recently published in the open access Biodiversity Data Journal by Dr Kevin Burgio, , Dr Colin Carlson, University of Maryland and Georgetown University, and Dr Alexander Bond, Natural History Museum of London, is the most comprehensive ever produced.

The new study provides unprecedented information on the birds range providing a window into the past ecology of a lost species.

“Making these data freely available to other researchers will hopefully help unlock the mysteries surrounding the extinction and ecology of this iconic species. Parrots are the most at-risk group of birds and anything we can learn about past extinctions may be useful going forward,” says the study’s lead author, Kevin Burgio.

The observational recordings included in the study have been gleaned from a wide variety of sources, including the correspondence of well-known historical figures such as Thomas Jefferson and the explorers Lewis and Clark.

The study team referenced recorded sightings spanning nearly 400 years. The oldest recorded sighting dates back to 1564, and was found in a description of the current state of Florida written by Rene Laudonniere in 1602.

Alongside the written accounts, the researchers included location data from museum specimens. These include 25 bird skins from the Natural History Museum’s Tring site, whose skin collection is the second largest of its kind in the world, with almost 750,000 specimens representing about 95 per cent of the world’s bird species. Thereby, the study proves what invaluable resources museum collections can be.

“The unique combination of historical research and museum specimens is the only way we can learn about the range of this now-extinct species. Museums are archives of the natural world and research collections like that of the Natural History Museum are incredibly important in helping to increase our understanding of biodiversity conservation and extinction,” says Alex Bond.

“By digitising museum collections, we can unlock the potential of millions of specimens, helping us to answer some of today’s big questions in biodiversity science and conservation.”

It is hoped that this research will be the beginning of a wider reaching work that will explore further into the ecology of this long lost species.

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Original source:

Burgio KR, Carlson CJ, Bond AL (2018) Georeferenced sighting and specimen occurrence data of the extinct Carolina Parakeet (Conuropsis carolinensis) from 1564 – 1944. Biodiversity Data Journal 6: e25280. https://doi.org/10.3897/BDJ.6.e25280