Endogean habits drove cryptic diversification in Appalachian Lathrobium Gravenhorst (Coleoptera, Staphylinidae).

The southern Appalachian Mountains are a biodiverse region with high levels of endemism. Shared biogeographic patterns among co-distributed, but independent taxa might illuminate common drivers of Appalachian endemism. Lathrobium is a Holarctic genus with 38 species described form North America, six of which are flightless and endemic to the high Appalachians.

Most soil and litter arthropods are unidentifiable based on current DNA barcode reference libraries.

We are far from knowing all species living on the planet. Understanding biodiversity is demanding and requires time and expertise. Most groups are understudied given problems of identifying and delimiting species.

Molecular diversity of Diplura in southern High Appalachian leaf litter.

The fauna of Diplura, the two-pronged bristletails (Hexapoda), of the southern Appalachians has received little focused systematic attention. Existing literature suggests the fauna to comprise around a dozen species. Based on a broader DNA barcode-based survey of high elevation litter arthropods in the region, we suggest the fauna to be much richer, with automated species delimitation methods hypothesising as many as 35 species, most highly restricted to single or closely proximate localities.

A review of Nearctic (Coleoptera, Staphylinidae), with revision and descriptions of new flightless species from the mountains of the southeastern U.S.

Species of the genus Gravenhorst (Coleoptera: Staphylinidae: Paederinae) from North America north of Mexico are reviewed and 41 species are recognized. Morphology and mitochondrial COI sequence data were used to guide species designations in three flightless lineages endemic to the southern Appalachian Mountains, a biologically diverse region known for cryptic diversity. Using a combination of phylogeny, algorithm-based species delimitation analyses, and genitalic morphology, five new cryptic species are described and possible biogeographic scenarios for their speciation hypothesized: Haberski & Caterino, , Haberski & Caterino, , Haberski & Caterino, , Haberski & Caterino, , Haberski & Caterino, Five additional species are described: Haberski & Caterino, , Haberski & Caterino, , Haberski & Caterino, , Haberski & Caterino, , and Haberski & Caterino, Two species are transferred from to Casey: (LeConte, 1880), and (Casey, 1905), Twenty-six names are reduced to synonymy.

A second species of the pill millipede genus Wesener, 2012 (Diplopoda, Glomerida) from the Great Smoky Mountains, USA.

We describe a second species of Wesener, 2012, a genus of pill millipede endemic to the southern Appalachians, based on morphological and molecular evidence. The fauna of Glomerida in America is characterized by its low diversity, and is only the fifth species of the order known from the eastern United States. Our phylogenetic analyses based on COI sequences recover a tentatively monophyletic lineage including both eastern American genera Cook, 1896 and , with a common ancestor in the Late Cretaceous to Mid Eocene and extant diversity within genera dating back to the Miocene.

Molecular diversity of Protura in southern High Appalachian leaf litter.

The higher elevations of the southern Appalachian Mountains, U.S.A.

Molecular diversity of Pseudoscorpiones in southern High Appalachian leaf litter.

The Pseudoscorpiones fauna of North America is diverse, but in regions like the southern Appalachian Mountains, they are still poorly documented with respect to their species diversity, distributions and ecology. Several families have been reported from these mountains and neighbouring areas. Here we analyse barcoding data of 136 specimens collected in leaf litter, most of them from high-elevation coniferous forest.

Gut bacteria of adult and larval Linnaeus (Coleoptera: Scarabaeidae) demonstrate community differences according to respective life stage and gut region.

The close association between bacteria and insect hosts has played an indispensable role in insect diversity and ecology. Thus, continued characterization of such insect-associated-microbial communities is imperative, especially those of saprophagous scarab beetles. The bacterial community of the digestive tract of adults and larvae of the cetoniine scarab species is characterized according to life stage, gut structure, and sex via high-throughput 16S rRNA gene amplicon sequencing.

Annotated checklist of the beetles (Coleoptera) of the California Channel Islands.

The beetle fauna of the California Channel Islands is here enumerated for the first time in over 120 years. We provide an annotated checklist documenting species-by-island diversity from an exhaustive literature review and analysis of a compiled dataset of 26,609 digitized specimen records to which were added over 3,000 individual specimen determinations. We report 825 unique species from 514 genera and 71 families (including 17 new family records) comprising 1,829 species-by-island records.

First report of the Thomson subgenus Reitter in the New World, represented by thirteen new Appalachian species (Coleoptera, Staphylinidae, Scydmaeninae).

Thirteen new species of Thomson (Staphylinidae: Scydmaeninae: Glandulariini) are described from the southern Appalachian Mts, USA: , , , , , , , , , , , , and These share a number of morphological characters with the Old World subgenus Cladoconnus Reitter, representing a diversification of species distinct from anything previously known from the western hemisphere. Most of the species occur at higher elevations, some at the tops of the region's highest mountains, and a few are single-peak endemics. No females of these species are winged, and in several species neither sex is winged.

Discovery of the Genus Horn, 1873 from Cretaceous Kachin Amber (Coleoptera: Histeridae).

For the first time, an extant histerid genus Horn, 1873 is described from a specimen found in mid-Cretaceous Kachin amber. sp. nov.

Phylogeny and evolution of Mesozoic and extant lineages of Histeridae (Coleoptera), with discovery of a new subfamily Antigracilinae from the Lower Cretaceous.

In order to place a newly discovered species Antigracilus costatus gen. sp. n.

Recognition and revision of the group (Histeridae, Histerinae, Exosternini).

Forty-nine new species of Neotropical Exosternini are described in this work, representing the newly recognized species group, within the large, heterogeneous taxon . Eight previously described species are also assigned to this group. Relationships within are indicated with several informal subgroups: subgroup: ( Hinton, 1935, , , , , , Marseul, 1889, , , , , , , , , Schmidt, 1893, , Reichensperger, 1939, , , , , , , ); subgroup: ( , , , Kanaar, 1997, , , , Wenzel & Dybas, 1941, Schmidt, 1893, (Lewis, 1898) , ); subgroup: ( , , , , , ); subgroup: ( , , , , ); subgroup: ( , ); subgroup: ( , , , ); - unplaced to subgroup: ( , , , ).

Mountains as Islands: Species Delimitation and Evolutionary History of the Ant-Loving Beetle Genus (Coleoptera, Staphylinidae) from the Northern Andes.

The ant-loving beetle genus Park 1942 is a poorly studied beetle lineage from the new world tropics. We recently collected from several previously unrecorded locations in the páramo biome of the high Ecuadorian Andes, with males exhibiting great morphological variation in the distribution of the foveae and depressions in the pronotum, as well as aspects of the male genitalia. Here, we employ phylogenetic and species delimitation methods with mitochondrial () and nuclear protein-coding (wingless) gene sequences to examine the concordance of morphological characters and geography with hypothesized species boundaries.

A revision of the species group (Coleoptera, Histeridae, Exosternini).

The species group is established here, revising the seventeen included species, four of which are described as new. This group is named for and contains the type species of , so represents a core around which a modern concept of the dumping-ground genus may be developed. The group includes several common and well-known species in the Americas, including some of the only to exhibit distinctive coloration.

Long-term population persistence of flightless weevils (Eurhoptus pyriformis) across old- and second-growth forests patches in southern Appalachia.

Background: Southern Appalachian forests are dominated by second-growth vegetation following decades of intensive forestry and agricultural use, although some old-growth patches remain. While it's been shown that second-growth areas may exhibit comparable species richness to old-growth in the area, the extent to which populations of arthropods in second-growth areas have persisted vs. recolonized from other areas remains unexamined.

A revision of the genus LeConte, 1876 (Curculionidae, Cryptorhynchinae) of America north of Mexico.

The genus LeConte, 1876 is revised for America north of Mexico. Eight species are recognized including LeConte, 1876, (LeConte, 1876), (Hamilton, 1893), resurrected name, and five new species as follows: new species (type locality, Texas, Hidalgo County, Bentsen Rio Grande State Park), new species (type locality, Texas, Bandera County, Lost Maples State Natural Area), new species (type locality, Texas, Bandera County, Lost Maples State Natural Area), new species (type locality, Texas, Brewster County, Big Bend National Park), and new species (type locality, Alabama, Winston County, Bankhead National Forest). Descriptions or redescriptions, and images of taxonomically important structures are presented for all species.

An early and mysterious histerid inquiline from Cretaceous Burmese amber (Coleoptera, Histeridae).

We describe a new genus and species of Histeridae from Upper Cretaceous Burmese amber, Caterino & Maddison, This species represents the third known Cretaceous histerid, which, like the others, is highly distinct and cannot easily be placed to subfamily. It exhibits prosternal characters in common with Saprininae, but other characters appear inconsistent with this possibility. The abdominal venter is strongly concave, and the hind legs are enlarged and modified for grasping.

Corrigenda: Caterino M, Vásquez-Vélez L (2017) A revision of Park (Staphylinidae, Pselaphinae). ZooKeys 685: 105-130. https://doi.org/10.3897/zookeys.685.13811.

[This corrects the article DOI: 10.3897/zookeys.685.

A revision of Park (Staphylinidae, Pselaphinae).

We revise the genus Park, redefining and redescribing the two previously known species, Park and Park, and adding ten new species: Caterino & Vásquez-Vélez, , Caterino & Vásquez-Vélez, , Caterino & Vásquez-Vélez, , Caterino & Vásquez-Vélez, , Caterino & Vásquez-Vélez, , Caterino & Vásquez-Vélez, , Caterino & Vásquez-Vélez, , Caterino & Vásquez-Vélez, , Caterino & Vásquez-Vélez, , and Caterino & Vásquez-Vélez, . The genus is still only known from a relatively small area in the southern Appalachian Mountains, but the diversity is much greater than previously suspected. The new species exhibit considerable diversity in male secondary sexual characters.

LepNet: The Lepidoptera of North America Network.

The Lepidoptera of North America Network, or LepNet, is a digitization effort recently launched to mobilize biodiversity data from 3 million specimens of butterflies and moths in United States natural history collections (http://www.lep-net.org/).

A revision of Megalocraerus Lewis, 1902 (Coleoptera, Histeridae: Exosternini).

The formely monotypic Neotropical genus Megalocraerus Lewis is revised to include five species, known from southeastern Brazil to Costa Rica: Megalocraerus rubricatus Lewis, Megalocraerus mandibularis sp. n., Megalocraerus chico sp.

Preservation of three-dimensional anatomy in phosphatized fossil arthropods enriches evolutionary inference.

External and internal morphological characters of extant and fossil organisms are crucial to establishing their systematic position, ecological role and evolutionary trends. The lack of internal characters and soft-tissue preservation in many arthropod fossils, however, impedes comprehensive phylogenetic analyses and species descriptions according to taxonomic standards for Recent organisms. We found well-preserved three-dimensional anatomy in mineralized arthropods from Paleogene fissure fillings and demonstrate the value of these fossils by utilizing digitally reconstructed anatomical structure of a hister beetle.