Neopetissius slaterorum O'Donnell, 2001 (Heteroptera: Lygaeoidea: Rhyparochromidae), previously known from Mexico to South America, is reported for the first time in the United States based on specimens collected in Cameron and Hidalgo counties, Texas. Data are presented for records from unpublished online resources as well as physical vouchers collected by the authors, and a key to the domestic genera of Lethaeini is presented.

Catastega altana Brown and Brown, new species is described and illustrated from Arizona, USA; and Sinaloa, Durango, and Jalisco, Mexico. The new species is associated with montane pine forests throughout its range. The new species brings to 10 the number of described species in the genus.

A new cryptic oxycarenid seed bug, Crophius arribus new species (Hemiptera: Heteroptera: Oxycarenidae), is described from the Mexican states of Chiapas, México, Puebla, and Querétaro, and Arizona, USA. The new species is assigned to the genus Crophius Stål even though the length of the labium and the number of fore femoral spines exceed the established generic limits. A lectotype is designated for Oxycarenus scabrous (Uhler).

Although the generic name implies that the genus Malayaxenos Kifune is from Southeast Asia, the current distribution is more cosmopolitan. Species are now known from Germany, United States of America, Dominica, Colombia, Australia, and Malaysia. As part of this distribution, four new species are named: Malayaxenos baileyi new species, Malayaxenos dominicensis new species, Malayaxenos kogani new species, and Malayaxenos platycephala new species. Additionally, Australoxenos Kathirithamby is proposed here as a junior synonym of Malayaxenos, making its only species Malayaxenos yetmaniensis new combination. All species in Malayaxenos are herein described or reviewed and a world key is provided for species identification.

Peach silver mite, Aculus fockeui (Acari: Prostigmata) is one of the most damaging pests of plum and peach trees. A study was conducted to determine the population dynamics A. fockeui (Nalepa and Trouessart, 1890) (Acari: Eriophyidae) in pesticide-free plum and peach orchards in three different localities (Termal, Çınarcık, and Centrum) of the Yalova Province in Turkey during 2018–2019. Aculus fockeui were found on leaves throughout the vegetative period in both plum (Prunus domestica) and peach (P. persica) orchards, and populations reached their densities between June and August in both years. Temperature and host plant differences had a significant effect on the population density, which was significantly higher in plum orchards than peach orchards.

The predators Zetzellia mali (Ewing) (Acari: Stigmaeidae) and Phytoseiulus persimilis Athias-Henriot (Acari: Phytoseiidae) were observed feeding on eriophyid mites in all orchards sampled. Further studies are needed to investigate their predation rate, effectiveness and potential as biological control agents for eriophyid mites.

Eighteen species of eriophyoid mites were recorded from Thrace, Turkey, which included two new distribution records for the country: Aculops thymi (Nalepa, 1889), collected on Teucrium polium L. (Lamiaceae); Aceria sawatchense Keifer, 1965, collected on Polygonum sp. (Polygonaceae); and one new species, Aceria edirnensis new species, collected on Potentilla erecta (L.) Rausch. (Asteraceae). The new species is described and illustrated and a table of diagnostic characters is provided to distinguish it from the most similar species, A. anserinus. The species from the region are listed and annotated with available host plant information and distributions in Turkey.

Nineteen species of flea ectoparasites were collected from 11 species of small mammals in NW British Columbia, Canada. New host-parasite associations and flea distribution records are established.

Larval descriptions, host plant records, and distribution data are provided for the Nearctic species of Empria Lepeletier and Taxonus Hartig (Hymenoptera: Tenthredinidae: Allantinae) associated with rosaceous herbs and shrubs. Geum canadense Jacq. is the first host record for T. epicera (Say) and represents a new host genus for E. maculata (Norton). Taxonus terminalis (Say), previously reported from unspecified Rubus spp., was reared from R. occidentalis L., and similar larvae were found on R. allegheniensis Porter and R. idaeus L.

Aphaenogaster mariae Forel is a rarely encountered North American arboreal ant that has eluded collectors for decades. Here, we provide the first formal documentation of a whole colony collection of the species found seventeen meters high in the canopy of the North Carolina Piedmont. We discovered a mature colony with more than 1000 individuals, including workers, alate reproductives, immatures, and intercastes. We present the first images of the males, larvae, pupae, and intercaste workers, redescribe the male, and provide natural history insights and colony demographics for this elusive species. Our collections suggest that A. mariae occurs at low densities consistent with its putative socially parasitic life history. Although much remains to be learned about this species, our results expand knowledge of its life history and facilitate future nest discovery and identification.

We report the results of long-term collecting efforts conducted mainly in the western Amazon region of Peru, and in Bolivia, Ecuador, Suriname, French Guiana, and Panama. Host plant and distribution records are documented for 55 plant species associated with 40 species of Anastrepha Schiner belonging to 15 species groups or unassigned to a group. We document new host records or provide detail for records recently reported in the literature with limited information and also describe the larval feeding modes within the fruit. This contributes to a better understanding of the biology of Anastrepha, facilitates phylogenetic analysis, and develops identification tools for the genus. We provide a synopsis of native host plants by Anastrepha species groups to compare the range of host plants within these groups. We report 25 plant species as hosts for the first time for 22 Anastrepha species and new distribution records for 18 Anastrepha species. We provide photographs of the fruit injury caused by larvae of 31 Anastrepha species. We report two larval feeding modes: 23 species are pulp feeders in 21 native and four exotic host plants, 11 species are seed feeders in 12 native host plants, and four species feed on both pulp and seeds of three native host plants. We report the first host plant record, two species of Sapotaceae, for the speciosa group, which is among the most ancestral clades of Anastrepha. We present and discuss our results in evolutionary terms following the most recently inferred Anastrepha phylogeny.

Illinoia (Masonaphis) lambersi (MacGillivray, 1960), a macrosiphine aphid species that mainly lives on Rhododendron spp., is native to western North America, but adventive in Europe, Macaronesia, South America, and West Asia. This species is regarded internationally as distributed in Japan, but no reliable literature records its distribution in Japan. The present paper, for the first time, formally reports the occurrence of I. lambersi in Japan and East Asia based on specimens collected in 1983 in Sapporo and 2020–2021 in Pippu, Hokkaido, Japan. Rhododendron molle subsp. japonicum was a principal host plant for I. lambersi in Hokkaido. Rhododendron albrechtii and R. × mucronatum were newly recorded as hosts for I. lambersi. Fundatrices were found in the populations in Pippu, indicating that the populations are holocyclic, as reported also in western North America.