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Two Lotagnostus-dominated faunas from the Windfall Formation at Ninemile Canyon in the Antelope Range of Nevada, USA, are described: an older Lotagnostus nolani Fauna and younger L. rushtoni Fauna. The former is dominated by two morphs of Lotagnostus, one strongly scrobiculate and the other smooth to weakly scrobiculate. Both morphs fall within the broad concept advocated for L. americanus by Peng et al. (2015). The numerous (>1400 sclerites) specimens of Lotaganostus in collections of the L. nolani Fauna confirm that the two morphs do not intergrade and remain distinct throughout ontogeny. Both display multiple traits that distinguish them from the type material of L. americanus, justifying treatment as separate species. Similarly unique, diagnostic features were identified to restore the Asian species L. punctatus and L. asiaticus to full species status, whereas deficiencies in the type material for L. americanus warrant restriction of the name to the holotype. New species described from the Windfall include five agnostoids (Lotagnostus nolani, L. clarki, L. morrisoni, L. rushtoni, and Neoagnostus parki) and one trilobite (Bienvillia eurekensis). Plicatolina nyensis Taylor is reassigned to Mendoparabolina on the form of its pygidium. Conodonts from the Catlin Member of the Windfall Formation and overlying informal Caryocaris shale member of the Goodwin Formation at Ninemile Canyon provide a late Sunwaptan (Eoconodontus Zone) age for the Lotagnostus rushtoni Fauna and assign the entire Caryocaris shale to the early Ordovician Rossodus manitouensis Zone. Combined with published data on trilobite faunas, the conodont faunas confirm strong diachroneity for the top of the Catlin, and a lack of overlap in age between the Caryocaris shale and Bullwhacker Member of the Windfall in ranges to the north and east. Co-occurrence of Lotagnostus nolani and Mendoparabolina nyensis establishes age equivalence of the L. nolani Fauna with the Hedinaspis-Charchaqia (HC) Fauna at the base of the Hales Limestone in the Hot Creek Range, and earlier correlations of the latter with the L. punctatus Zone in Asia are supported. However, isolation of the HC Fauna in starved-basin deposits above a major sequence boundary at the base of the Hales, and ecologic restriction of Lotagnostus to lower slope and basinal environments that prevented association with endemic shallow marine taxa, renders correlation into the biostratigraphy of Laurentian upper slope and platform imprecise on the order of 10s, if not 100s of meters.

This study provides a comprehensive account of 40 species (52 valid names and one preoccupied name) of the genus Nemophora Hoffmannsegg, 1798 described or recorded from Myanmar, Thailand, Laos, Cambodia and Vietnam. A key to the species based on external characters and on male genitalia is provided; 14 new species are described: N. auricapitella Kozlov, sp. nov., N. chalcoptera Kozlov, sp. nov., N. karsholti Kozlov, sp. nov., N. kuznetzovi Kozlov, sp. nov., N. meyi Kozlov, sp. nov., N. nielseni Kozlov, sp. nov., N. nieukerkeni Kozlov, sp. nov., N. nigripunctella Kozlov, sp. nov., N. punctifasciella Kozlov, sp. nov., N. rubicunda Kozlov, sp. nov., N. szabokyi Kozlov, sp. nov., N. thailandensis Kozlov, sp. nov., N. vietnamensis Kozlov, sp. nov. and N. yeni Kozlov, sp. nov. Lectotypes are designated for four species, including one junior synonym: Nemotois diplophragma Meyrick, 1938, Nemotois sinicella Walker, 1863, Nemotois cleodoxa Meyrick, 1922 and Adela satrapodes Meyrick, 1894. Eight new synonyms for four species are proposed: Nemophora badagongshana Liao, Hirowatari & Huang in Liao, Hirowatari, Yagi, Wang, Wang & Huang, 2023, syn. nov. of Nemophora aurifera (Butler, 1881); Nemotois chrysocharis Caradja, 1938, syn. nov. of Nemophora sinicella (Walker, 1863); Nemotois diplophragma Meyrick, 1938, syn. nov. of Nemophora melichlorias (Meyrick, 1907); Nemophora basalistriata Liao, Hirowatari & Huang in Liao, Hirowatari, Yagi, Wang, Wang & Huang, 2023, syn. nov. of Nemophora melichlorias (Meyrick, 1907); Nemotois limenites Meyrick, 1914, syn. nov. of Nemophora aurifera (Butler, 1881); Nemophora quadrata Liao, Hirowatari & Huang in Liao, Hirowatari, Yagi, Wang, Wang & Huang, 2023, syn. nov. of Nemophora aurifera (Butler, 1881); Nemotois rubrofascia formosicola Matsumura, 1931, syn. nov. of Nemophora sakaii (Matsumura, 1931); Nemotois servata Meyrick in Caradja, 1925, syn. nov. of Nemophora aurifera (Butler, 1881). Four new combinationsare introduced: Nemophora aglaospila (Meyrick, 1928), comb. nov.; Nemophora cleodoxa (Meyrick, 1922), comb. nov.; Nemophora melichlorias (Meyrick, 1907), comb. nov.; and Nemophora sinicella (Walker, 1863), comb. nov. Of 40 species considered, 16 were recorded in Myanmar, 21 in Thailand, 4 in Laos, 4 in Cambodia and 13 in Vietnam.

In its traditional, paraphyletic context (sans Astigmata), oribatid mites comprise more than 11,000 known species (Subas 2022). They are largely fungivores and decomposers in organic horizons of soil and have a plesiotypic ontogeny that includes four active, free-living juvenile instars. In a taxonomically organized 2014 catalogue, we summarized literature resources concerning the 805 species for which ontogenetic data (mainly morphological) were available. Herein, we supplement that catalogue with all data known to us that were published during the intervening decade. These relate to 267 species, of which 165 were described prior to 2014. As in the 2014 catalogue, representation is strongest among: the middle-derivative hyporder Nothrina; brachypyline superfamilies that are affiliated with aquatic, semiaquatic or intertidal environments (Limnozetoidea, Ameronothroidea); some eupheredermous groups (Plateremaeoidea, Damaeoidea); and Ceratozetoidea. Also as in 2014, groups that are underreprented, based on their high known diversity, are the ptyctimous Mixonomata (Euphthiracaroidea, Phthiracaroidea) and the brachypyline superfamilies Oppioidea and Oripodoidea.

The sponge associated axiid shrimp Eiconaxius farreae Ortmann, 1891 was originally described based on specimens from Sagami Bay, central Japan. Morphological examination of many specimens of Eiconaxius collected from Sagami Bay and nearby areas, and genetic data from the mitochondrial COI and 16S rRNA genes have revealed that three species are represented. This finding led to a reappraisal of the identity of E. farreae and E. mortenseni Sakai, 1992, also originally described from Sagami Bay. It has been clarified that two species (E. farreae and an undescribed species) were mixed in the syntype material of E. farreae, and consequently, a lectotype of E. farreae is designated in the interest of nomenclatural stability. Here, E. farreae and E. mortenseni are redescribed, and the third species is described as new, E. reconditus. The new species is morphologically very similar to E. mortenseni. Differentiating characters among closely allied species are reassessed. Previous records of E. farreae are reviewed in light of the present findings.

Based on recent field sampling in the highlands of western Sabah, a new species of Depressacca Ingrisch, 1998 (Conocephalinae: Agraeciini) is described from Tenompok, Depressacca macrolima sp. nov., that can be easily distinguish from two other known congeners by the presence of numerous large and falcate spines on the legs numerous large and falcate spines on its legs. Based on the new material, we also document here the live images and/or new locality records for other katydids of the tribes Agraeciini and Meconematini: Bispinolakis longicauda Ingrisch, 1998, Palaeoagraecia philippina (Karny, 1926) and Salomona borneensis Willemse, 1959; Alloteratura (Meconemopsis) longa Gorochov, 2008, Borneratura kinabaluana (Bey-Bienko, 1971) and Rhinoteratura pulchra Gorochov, 2008.

In this contribution based on the American wingless gryllacridines, the two genera described for the New World Camptonotus and Neoeremus are defined and differentiated, resulting in three additional genera: Neortus stat. resurr., Fiancogryllacris n. gen. and Camposgryllacris n. gen. The species of these genera were described at the end of the 19th century and the beginning of the 20th century, and in most taxa, there are no records since their description, so the iNaturalist platform provided additional distributional data for some species. Taxonomic keys are provided for the identification of the genera and species studied. Finally, the evolutionary interpretation of the appearance and disappearance of wings in leaf-rolling crickets are discussed.

Schendyla antici sp. nov., a dwarf geophilomorph from the Mt. Medvednik (Western Serbia, Balkan Peninsula), is described and illustrated based on the specimens extracted from the soil samples. A detailed comparison with all species within the genus is provided. The new species has the lowest number of leg-bearing segments within the genus Schendyla Bergse & Meinert, 1866, and one of the lowest in the order Geophilomorpha in general.

A new species of the genus Philothalpus (Coleoptera: Staphylinidae: Staphylinini: Philothalpina), Philothalpus precious Klemann-Junior, Barroso, Pereira & Asenjo, sp. nov., is described from Amazonas state, northern Brazil. Major diagnostic features are illustrated and the species is included in the key to Philothalpus species.

Three new species of ground beetles belonging to the genera Arsinoe Laporte de Castelnau, 1835, Dontolobus Basilewsky, 1970 and Lasiocera Dejean, 1831 (Coleoptera, Carabidae, Lebiinae), respectively, from Guinea-Bissau are described: Arsinoe aguiari n. sp., Dontolobus bivari n. sp. and Lasiocera schwarzi n. sp., together with illustrations of their habitus and aedeagus. Moreover, an annotated checklist of 35 species and subspecies of Lebiinae is provided, including data on general distribution, new country and new distribution records at country level. The list includes novel information from one entomological mission to that country carried out in 2009 and corrigenda data on previous published species. Further, dichotomic keys are made available for the identification of the Guinea-Bissau species of the Arsinoe, Dontolobus and Lasiocera genera. Some considerations on the distribution and conservation status of these beetles in Guinea-Bissau are also presented.

The genus Galapa Huber, 2000 includes tiny spiders (body length <1.5 mm) restricted to semi-arid habitats. It has long been thought to be endemic to the Galapagos Islands until G. spiniphila Huber, 2020 was described from the Venezuelan Paraguan Peninsula. Here, we support this generic assignment with molecular (CO1) data and describe two new species from Colombia (G. gabito Huber sp. n.) and Costa Rica (G. murphyi Huber sp. n.), showing that the genus is actually widely distributed. Distribution modelling identifies several high suitability areas for Galapa, all of which are poorly sampled with respect to Pholcidae (ranging from Nicaragua to northern Peru and Guiana). Our results suggest a strong sampling bias against spiders restricted to dry tropical regions and habitats.