A taxonomic revision of Neodietrichia (Araneae: Linyphiidae), a rarely encountered but widespread spider taxon.

The linyphiid spider Dietrichia hesperia was described from California in 1933 by Crosby and Bishop. The genus was renamed to Neodietrichia in 2008 by Özdikmen since Dietrichia was already occupied by a fossil bivalve. Until now, this rarely collected arboreal spider was the sole member of Neodietrichia.

New species in old mountains: integrative taxonomy reveals ten new species and extensive short-range endemism in spiders (Araneae, Nesticidae) from the southern Appalachian Mountains.

This revision is based on sampling efforts over the past three decades in the southern Appalachian Mountains which have provided (Araneae, Nesticidae) collections of approximately 2100 adult specimens from more than 475 unique collecting events. Using a "morphology first" framework we examined recently collected specimens plus museum material to formulate morphology-based species hypotheses for putative new taxa (discovery phase). Using sequence capture of nuclear ultraconserved elements (UCEs) we analyzed 801 nuclear loci to validate new (and prior) morphology-based species hypotheses (validation phase) and reconstructed a robust backbone phylogeny including all described and new species.

Effects of Fire on Ground-Dwelling Spider (Araneae) Assemblages in Central Indiana Forests.

Fire is a natural disturbance that occurs in many temperate and tropical ecosystems worldwide. As ubiquitous members of these ecosystems, spiders (Araneae) are often affected by fire, and their response to this disturbance has been shown to be dependent on taxonomy, functional diversity, seasonality, and a variety of environmental factors. We examined the effect of fire on ground-dwelling spider assemblages in temperate forests in central Indiana over 5 yr and found that spider assemblages were significantly affected by fire disturbance.

Revision of the spider genus Epiceraticelus (Araneae, Linyphiidae) with a description of a new species.

The type species of the genus, Epiceraticelus fluvialis Crosby Bishop, 1931, is herein redescribed since the types are presumed lost. In addition, a new species, Epiceraticelus mandyae n. sp.

Globally distributed occurrences utilised in 200 spider species conservation profiles (Arachnida, Araneae).

Background: Data on 200 species of spiders were collected to assess the global threat status of the group worldwide. To supplement existing digital occurrence records from GBIF, a dataset of new occurrence records was compiled for all species using published literature or online sources, from which geographic coordinates were extracted or interpreted from locality description data.

New Information: A total of 5,104 occurrence records were obtained, of which 2,378 were from literature or online sources other than GBIF.

First description of the male of the linyphiid spider Disembolus corneliae (Chamberlin Ivie, 1944) (Araneae, Linyphiidae).

The erigonine linyphiid genus Disembolus currently contains 24 described species (World Spider Catalog 2018). Disembolus was erected by Chamberlin and Ivie (1933) to accommodate their new species D. stridulans Chamberlin and Ivie from Utah.

Species conservation profiles of a random sample of world spiders IV: Scytodidae to Zoropsidae.

Background: The IUCN Red List of Threatened Species is the most widely used information source on the extinction risk of species. One of the uses of the Red List is to evaluate and monitor the state of biodiversity and a possible approach for this purpose is the Red List Index (RLI). For many taxa, mainly hyperdiverse groups, it is not possible within available resources to assess all known species.

Species conservation profiles of a random sample of world spiders III: Oecobiidae to Salticidae.

Background: The IUCN Red List of Threatened Species is the most widely used information source on the extinction risk of species. One of the uses of the Red List is to evaluate and monitor the state of biodiversity and a possible approach for this purpose is the Red List Index (RLI). For many taxa, mainly hyperdiverse groups, it is not possible within available resources to assess all known species.

Species conservation profiles of a random sample of world spiders II: Gnaphosidae to Nemesiidae.

Background: The IUCN Red List of Threatened Species is the most widely used information source on the extinction risk of species. One of the uses of the Red List is to evaluate and monitor the state of biodiversity and a possible approach for this purpose is the Red List Index (RLI). For many taxa, mainly hyperdiverse groups, it is not possible within available resources to assess all known species.

Species conservation profiles of a random sample of world spiders I: Agelenidae to Filistatidae.

Background: The IUCN Red List of Threatened Species is the most widely used information source on the extinction risk of species. One of the uses of the Red List is to evaluate and monitor the state of biodiversity and a possible approach for this purpose is the Red List Index (RLI). For many taxa, mainly hyperdiverse groups, it is not possible within available resources to assess all known species.

Larval aquatic and terrestrial mites infesting a temperate assemblage of mosquitoes.

We collected 22,769 adult female mosquitoes, representing 27 species, from light traps in Norfolk, Virginia (2006-2007) and examined them to assess infestation by larval mites. Mosquitoes were parasitized by two species of aquatic (Acari: Arrenuridae: Arrenurus) and three species of terrestrial mites (Acari: Erythraeidae). The prevalence of infestation varied from 0.