The trombiculid genus Euschoengastia Ewing, 1938 is currently comprised of species from all biotic regions giving the genus a worldwide distribution. In North America, there are 60 described species. One species, Euschoengastia chisosensis Wrenn, Baccus, and Loomis, was collected parasitizing cricetid rodents in Texas, USA. In the present study, a new genus is proposed for this species, Jumanoacarus Bassini-Silva, Jacinavicius, and Welbourn.

Four monotypic genera, and the species belonging to each genus – Arioge germainii (Signoret), Eretmophora protensa Stein, Rochrosoma subaptera Reed, and Stiroptus lineaticornis Stål – are redescribed, and one new genus and one new species from Colombia are described in the tribe Coreini. Photographs and drawings of the adults and male genitalia and new distributional records to the redescribed species are given, and a lectotype for Eldarca germainii Signoret is designated.

The digger wasp Microbembex monodonta Say uses visual cues to home to her reproductive burrow. In my experiments I introduced a configuration of potential visual cues around the wasps' burrows and trained the wasps to follow it when shifted. I shifted the configuration each time the wasps were away on foraging flights. I exposed a single wasp to 5 shift-trials and recorded nest searching activity. She was misled upon every return, choosing initially to make an incipient digging (a scrape) where she had been last successful relative to the introduced configuration. During her search for her burrow she made multiple “scrapes” which included locations where she had been successful in previous shifts, as well as random scrapes. The scrapes made at locations where she had previously been successful suggest that she might have been able to recall several previous burrow locations, a behavior not previously reported in digger wasps.

New host plants and other observations are presented for North American weevils (Coleoptera: Curculionidae) with larvae that feed on leaves. Circaea lutetiana L. (Onagraceae) is confirmed as a larval host of Dietzella zimmermanni (Gyllenhal) and the oviposition habits of this species are described for the first time. Lysimachia borealis (Raf.) U.Manns and Anderb. (Primulaceae) is newly reported as a host of Pelenomus sulcicollis (Fåhraeus), and observations of the eggs and larvae are compared with a century-old account of this species. Anaphes Haliday (Mymaridae) was reared from an egg of P. sulcicollis. New distribution records are given for the Parthenocissus Planch. (Vitaceae) leafminer Orchestomerus eisemani Yoshitake and Anderson, and its habits and phenology are discussed, along with an unusual rearing from Vitis aestivalis Michx. Betula alleghaniensis Britton, B. lenta L., B. papyrifera Marshall, Carpinus caroliniana Walter, and Ostrya virginiana (Mill.) K.Koch (Betulaceae) are newly reported as larval hosts for the leafminer Orchestes mixtus Blatchley, and Zagrammosoma interlineatum Girault (Eulophidae) is newly reported as its parasitoid. Amelanchier Medik. spp., Aronia melanocarpa (Michx.) Elliott, Prunus americana Marshall, P. maritima Marshall, P. pensylvanica L.f., P. persica (L.) Batsch, P. serotina Ehrh., and Sorbus americana Marshall (Rosaceae) are new larval hosts for the leafminer O. pallicornis Say, and its parasitoids include Chrysocharis cf. nephereus (Walker) and C. pentheus (Walker) (Eulophidae). Records of other Orchestes spp. on Alnus Mill. are given, including the first rearing of O. testaceus (Müller) from A. serrulata (Aiton) Willd. The leaf mine is described for the first reared specimen of the Salix L. (Salicaceae) leafminer Tachyerges niger Horn.

A new treehopper from Bolivia, Cladonota (Cladonota) cryani new species, is described and illustrated.

A checklist and new records to the Cicadellidae fauna of the United Arab Emirates are given. Eight tribes (in four subfamilies), 21 genera, and 23 species are recorded for the first time including Neoaliturus grandidentis new species described from Abu Dhabi and Sharjah Emirates. Diagnostic morphology of Dryadomorpha species is discussed.

A Nearctic predaceous midge, Sphaeromias gilvus Grogan, new species, is described from Alabama based on adult females, and new locality records are provided for S. bifidus Wirth and Grogan. Diagnostic characters of this new species are included in photomicrographs and a key is provided to the three Nearctic species of Sphaeromias.

From seven parishes in the northwestern region of Louisiana, 1053 bees were collected representing 133 species in 36 genera. Prior to this survey, there had been no thorough sampling of the bee fauna in the entire northern half of the state. Twenty-three described and 6 undescribed species had not been reported from Louisiana previously. Most of these are known from adjacent states, whereas others had been known only from more distant locations. This study documents bee species' visits to ninety-three host plants.

The long-misidentified stalk-eyed bug Epipolops quadrispinus Stål is redescribed and its identity is clarified, and Epipolops tuberculatus new species is described from Colombia based on specimens previously misidentified as E. quadrispinus. Dorsal and lateral habitus images of the adults and male genital capsules are provided to facilitate identification.

Adults intercepted by Malaise traps of the Gressitt and Gressitt style were used to determine the seasonal flight activity of Atylotus duplex, A. thoracicus, and Stonemyia rasa at three sites in Connecticut over one or two years. In Guilford, adults of A. duplex entered two traps placed between an apple orchard and a mesic forest during four weeks in July 1996 and in four between late June and late July 1997. In an acidic bog in Norfolk, adults of A. thoracicus flew into a trap over five weeks between mid-July and mid-August 2011. Stonemyia rasa entered two traps in Guilford over four weeks between mid-August and early September 1996 and between late August and mid-September 1997. In Meriden, S. rasa was captured in two traps between an apple orchard and a field with scattered woody vegetation between late July and early September 1996. A significant female bias occurred in trap samples of A. duplex from Guilford in 1997 and of S. rasa from Guilford and Meriden in 1996. Flight periods in Connecticut are compared with others reported for northern areas. In New England, adults of Stonemyia rasa visited flowers of six plant species (four new floral hosts) in five families, and those of S. tranquilla were on seven species (six new) in six families. The most important results of this study were the first systematic sampling of A. duplex and S. rasa, the first state records of A. duplex, and the discovery of many new floral hosts for S. rasa and S. tranquilla. New information on flight periods of A. duplex and S. rasa was the direct result of examining the bycatch of traps operated for other purposes.

The nymphs of Quadrinarea Goding are described and illustrated for the first time. Previously considered endemic to Jamaica, adults were recently discovered in Dominica (new country record) and possibly Guyana. The nymphs lack the scoli on the head, thorax, or abdomen that are common among the nymphs of many membracid taxa, including some members of most other tribes of Smiliinae. We also have collection records of adults suggesting that eggs are laid in clutches and that its native host plant is Annona muricata L. (Annonaceae).

Thelaxes suberi (Del Guercio) was found for the first time in North America. The first collection was on a single potted oak tree in rural Marion County, Florida. Morphological and molecular techniques were used to determine the identity of this adventive species. The find was reported first only as a quarantinable pest, because the prior whereabouts of the potted plant were not known. However, suction trap collections in Polk County in 2020 indicated that the species is established in Florida. It is not known if this species will become numerous on oaks in North America.

Two closely allied species of Rhipidia are described from specimens taken within a secondary lower montane forest of Guatemala. These species are considered to be distinct from other Rhipidia and are placed in a new subgenus, Angustilobus. Thus, the newly described species are named Rhipidia (Angustilobus) bicornis and Rhipidia (Angustilobus) schusteri. The descriptions, with relevant illustrations and images, are of adult males.

The crab spider genus Heriaeus Simon, 1875 is recorded for the first time from India. Heriaeus chareshi new species is described and illustrated based on female specimens.

The larva of the aquatic dance fly genus Proclinopyga Melander is described for the first time. The larval association with adult stages was facilitated using COI mitochondrial DNA barcode sequences. The larvae of Proclinopyga are found in coarse substrates of riffles and other swift-flowing sections of streams and small rivers. The larvae infrequently occur in benthic samples collected from these habitat types, where they may co-occur with the larvae of other Empididae genera. The final instar larva is described and illustrated and a key to the larvae of genera of Clinocerinae of North America is updated.

Crapemyrtle bark scale (Acanthococcus lagerstroemiae (Kuwana, 1907)) is an adventive pest that feeds on crapemyrtle (Lagerstroemia Linnaeus). First detected in North America in Dallas County, Texas in 2004, crapemyrtle bark scale has since spread patchily across the southeastern United States. The specimens reported here are the first recorded in Pennsylvania and represent the most northern occurrence of the species.

Of the six subfamilies in the family Naucoridae, Cheirochelinae is the only subfamily for which immature stages have not been described. This work represents the first contribution of nymphal instar descriptions in the subfamily Cheirochelinae. Herein, the five instars of Gestroiella siamensis Polhemus, Polhemus, and Sites are illustrated and described. The descriptions are based on specimens collected in Ton Nga Chang Wildlife Sanctuary in southern Thailand. The primary characters to distinguish among the instars are overall body size and relative lengths of the mesonotal wing pad compared to the exposed lateral margin of the metanotum. A phoretic association between nymphs of G. siamensis and larvae and pupae of the chironomid Nanocladius (Plecoteracoluthus) sp. also is documented and discussed.

Centrocoris volxemi (Puton) is a Palearctic coreid native to the Irano-Turanian floristic region and is reported here for the first time in North America and the western US (Utah and Idaho). The species was collected during surveys in Utah in 2021. We also discuss online records and images from 2020–2021 in Utah and Idaho that appear consistent with C. volxemi. The number of records, broad distribution, and field observations suggest that the species is firmly established. Field observations indicate that the primary host in the US is prickly Russian thistle, Salsola tragus L. We provide diagnostic characters and illustrations of the species to facilitate its identification and separation from Centrocoris variegatus Kolenati, another Palearctic species established in the US and first reported from central to central-western California in 2009.