New species from the nivicola group of Hypogastrura Bourlet, 1839 (Collembola, Poduromorpha, Hypogastruridae) from Canada

Systematics of eastern Nearctic Leuctra moha Ricker, 1952 with notes on L. hicksi Harrison & Stark, 2010 (Plecoptera: Leuctridae)

Redescription of four species of Camelobaetidius Demoulin, 1966 (Ephemeroptera: Baetidae) from Central and North America

Pagastia (P.) donoliveri sp. nov.—a new Nearctic alpine stream chironomid species (Diptera: Chironomidae: Diamesinae) from the Beartooth Mountains, Wyoming, U.S.A.

A new species of Setostylus Matile and new records of Setostylus bellulus (Williston) (Diptera: Keroplatidae)

Two new species and a key to the dustywings of Mexico (Neuroptera, Coniopterygidae)

New genera, new species, and new combinations in new world Cochylina (Lepidoptera: Tortricidae: Tortricinae)

Rhamphomyia Meigen of the Canadian Arctic Archipelago, Greenland and Iceland (Diptera: Empididae)

Systematics of Paraleucopis Malloch with proposal of Paraleucopidae, a new family of acalyptrate Diptera

Checklist of oribatid mites (Acari: Oribatida) of Canada and Alaska

Soyedina Ricker, 1952 (Plecoptera: Nemouridae) in the eastern Nearctic: review of species concepts, proposed morphology-based species groups, and description of a new species from North Carolina

Revision of the Holarctic genus Gloma Meigen (Diptera: Empidoidea: Brachystomatidae: Trichopezinae)

Naiadacarus sidorchukae sp. n. (Acariformes: Acaridae) from Western Siberia closely related to a North American species, with a new generic synonymy

Lectotype designations, taxonomic notes and new synonymy in some species of the bee genus Centris Fabricius, 1804 described by William Henry Fox (Hymenoptera: Apidae)

Alloperla clarki sp. nov. (Plecoptera: Chloroperlidae), a new species from the eastern Nearctic with discussion of a new species group

Mexican species of the genus Probles Förster (Hymenoptera: Ichneumonidae: Tersilochinae)

Taxonomy of the Proisotoma complex. Redefinition of genera and description of new species of Scutisotoma and Weberacantha(Collembola, Isotomidae)

Review of the Nearctic species of Leiophron and Peristenus (Hymenoptera: Braconidae: Euphorinae) parasitizing Lygus (Hemiptera: Miridae: Mirini)

A Revision of the New World Genera Brachylinga Irwin and Lyneborg and Lysilinga Irwin and Lyneborg (Diptera: Therevidae: Therevinae) with the Description of a New Genus, Elcaribe Webb

Notes on Nearctic genera Catalinus Casey and Parascydmus Casey (Coleoptera: Staphylinidae: Scydmaeninae)

Revision of the Nearctic species of the genus Pholetesor Mason (Hymenoptera: Braconidae)

Notes, synonymy and description in American Methiini (Coleoptera, Cerambycidae, Cerambycinae)

Review of the genus Lomachaeta Mickel, 1936 (Hymenoptera: Mutillidae) with new species and sex associations

150 years in the making: first comprehensive list of the ants (Hymenoptera: Formicidae) of Virginia, USA

New Black Fungus Gnats (Diptera, Sciaridae) of North America. Part V. Genera Pseudolycoriella Menzel & Mohrig and Phytosciara Frey

Five new species of the tribe Gyrophaenina Kraatz 1830 (Coleoptera: Staphylinidae: Aleocharinae) from the southern part of the United States

Taxonomic Review of Eumenes Latreille, 1802 (Hymenoptera, Vespidae, Eumeninae) from the New World

A revision of the Nearctic species of the genus Stethusa Casey, 1910 (Coleoptera: Staphylinidae: Aleocharinae)

The New World species of Cerodontha (Xenophytomyza) Frey (Diptera: Agromyzidae)

A revision of the genus Goniusa Casey, 1906 (Coleoptera: Staphylinidae: Aleocharinae)

Seven new species of New World Puliciphora Dahl (Diptera: Phoridae) with a new key to the Neotropical species