Ammoplanops arenarum sp. nov. is described from male specimens collected in Texas, New Mexico, and Arizona, United States. The species is closely related to A. moenkopi Pate, 1939 from which it differs primarily by the shape of the pregenital sterna. A revised key to Nearctic Ammoplanops Gussakovskij, 1931 species is provided, removing Pulverro irwini (Bohart & Smith, 1978), which previously had been incorrectly placed in Ammoplanops. Orbital foveae are reported for the first time for several species of Ammoplanops and Pulverro, a morphological feature hitherto only known from Ammoplanellus Gussakovskij, 1931 within the family Ammoplanidae.

Aleuroclava corrugis sp. nov. is described from the Andaman Islands, India with images and line drawings of the type specimen. Puparia of the new whitefly differ from other Aleuroclava species in having a corrugated dorsal surface and median tubercles. A key to puparia of Aleuroclava species occurring in the Andaman Islands is also given.

Six introduced species of scale insects (Hemiptera: Sternorrhyncha: Coccomorpha) were found for the first time in the environment in California in recent years, including three soft scales (Coccidae): Ceroplastes rusci (Linnaeus, 1758), Coccus viridis (Green, 1889), and Toumeyella parvicornis (Cockerell, 1897); one armored scale (Diaspididae): Aulacaspis yasumatsui Takagi, 1977; one ensign scale (Ortheziidae): Graminorthezia tillandsiae (Morrison, 1925); and one mealybug (Pseudococcidae): Nipaecoccus floridensis Beardsley, 2001. An updated checklist of all scale insect species known to occur in California is provided, including 485 species in 22 families and 140 genera, of which 307 (63%) are probably native and 177 (37%) have likely been introduced. Of the 307 native species, only 25 (8%) have been documented as pests in contrast with 147 (83%) of the 177 adventive species. The scale insect families in California represented by the highest number of both adventive species and pest species are Diaspididae, Pseudococcidae, and Coccidae.

Acmaeodera bashami, sp. nov., is described. Its similarity to Acmaeodera quadrivittatoides Nelson & Westcott, 1995 is discussed, and images are provided.

Se describe Acmaeodera bashami, sp. nov. Se analiza su similitud con Acmaeodera quadrivittatoides Nelson & Westcott, 1995, y se proporcionan imágenes.

Four new taxa are described in Acanthocinini: Pseudanisocerus thryallis, gen. nov., sp. nov., from Guatemala; Olenosus guatemalensis sp. nov., from Guatemala; and Oxathres apicofuscata sp. nov., from Belize. Oxathres apicofuscata sp. nov. is included in a previous key.

A new species of the genus Pachyschelus Solier, 1833, is described and illustrated: Pachyschelus chengxianensis sp. nov. collected from Gangsu Province, China.

Terrestrial invertebrates, including insects, arachnids, snails and annelids, account for 80% of all multicellular species and are essential components of the ecosystem. Taxonomic inventories are crucial for detecting the effects of natural and human-caused environmental changes on species compositions. On islands, these assessments enable the early detection of invasive species. This study presents the findings of a rapid inventory of terrestrial invertebrates carried out on Barrington Island, also known as Santa Fe, a 24-km² uninhabited island located in the center of the Galapagos archipelago. Six collection techniques were used to obtain a representative sample of terrestrial invertebrate diversity on Barrington. Taxonomic analysis identified 48 morphospecies from the orders Araneae, Coleoptera, Diptera, Hemiptera, Hymenoptera, Lepidoptera, Neuroptera, Odonata, Orthoptera, Scorpiones, and Stylommatophora. For the first time, two species of dragonflies from the genus Pantala Hagen, 1861 and the scorpion Hadruroides galapagoensis Maury, 1974 were recorded on Barrington Island, along with eight introduced species, two of which are deemed invasive in the Galapagos Islands. These data add to the lists of taxa previously collected and provide for long-term monitoring of endemic and invasive species, which is a fundamental tool to better comprehend environmental and human effects on oceanic islands.

Los invertebrados terrestres, grupo que incluye a los insectos, arácnidos, caracoles y anélidos, abarcan el 80% de todas las especies multicelulares descritas y son un componente esencial del ecosistema. Los inventarios taxonómicos desempeñan un papel crucial en la identificación de alteraciones en la composición de las especies inducidas por factores naturales y antropogénicos. En islas, además facilitan la detección temprana en la llegada de especies invasoras. Este estudio presenta los hallazgos de un inventario rápido de invertebrados terrestres realizado en Isla Barrington, también conocida como Santa Fe, una isla inhabitada de 24 km² situada en el centro del Archipiélago de Galápagos. Seis técnicas de colecta se utilizaron para obtener una muestra representativa de la diversidad de invertebrados terrestres en Barrington. El análisis taxonómico identificó 48 morfoespecies de los órdenes Araneae, Coleoptera, Diptera, Hemiptera, Hymenoptera, Lepidoptera, Neuroptera, Odonata, Orthoptera, Scorpiones, y Stylommatophora. Por primera vez se reportan en la Isla Barrington dos especies de libélulas del género Pantala Hagen, 1861 y el escorpión Hadruroides galapagoensis Maury, 1974. Además, se detectaron ocho especies introducidas, dos de las cuales tienen la categoría de invasoras en las Islas Galápagos. Estos datos se incorporan a registros previos y conforman una base de datos que permitirá el monitoreo de especies endémicas e introducidas a largo plazo, una herramienta fundamental para comprender los efectos de los disturbios naturales y antropogénicos en islas oceánicas.