Sampling of twelve locations along the north east coast of the USA and Brazilian coasts yielded five new records of Xenotrichulidae species (Xenotrichula guadalupensis, X. carolinensis, X. intermedia, Heteroxenotrichula pygmaea and Draculiciteria tesselata) and the description of a new species of Xenotrichula, X. tropicalis sp. nov. from Brazil. The new species is unique among its congeners in possessing double edge rounded scales on the ventral edge of the pharynx and two rows of flat plates on the ventral trunk.

A brief biography is presented of Władysław Emanuel Lubomirski (1824–1882). Type material of species described by him which is present in the Museum and Institute of Zoology PAS is documented. Eponyms given to Lubomirski and some notes on the importance of his collection are also given.

Qudsialemellus keralaensis, a new genus and species of belondirid nematode is described and illustrated from the tropical rain forests of Western Ghats, India. The new genus is characterized by its rounded and continuous lip region; odontostyle attenuated with solid appearing tip; odontophore with distinct basal flanges; spiral muscular sheath around the expanded part of pharynx; spathulate cardia; female genital system mono-opisthodelpic; vulva transverse; tail long filiform, similar in both sexes; male with dorylaimoid spicules and two spaced ventromedian supplements. It comes close to the genera Qudsiella Jairajpuri, 1967, Paraqudsiella Siddiqi, 1981 and Durinemella Andrássy, 2009 belonging to the subfamily Swangeriinae Jairajpuri, 1964 but distinctly differs from all the three genera in the presence of a thick walled odontostyle with its tip almost solid appearing and odontophore with prominent basal flanges.

This paper reports on two new species of mites of the genus Cosmolaelaps in soil, C. floridius sp. nov. and C. spatulatus sp. nov., from the United States of America (USA). The description of the first species has been presented based on the morphological characters of both female and male and for the later based on the female members.

Two new species of orb-weaving spiders, Cyrtarachne wayanadensis sp. nov. and Pasilobus sahyadriensis sp. nov., are recorded from Southern Western Ghats, Kerala. Detailed description and illustrations of the new species are provided.

The genus Lophotettix, belonging to the Neotropical subfamily Lophotettiginae of the family Tetrigidae, has hitherto been known only from five specimens, i.e. the holotypes of each of its five species. The most important diagnostic criterion for delimiting species was the morphology of the projection of the median carina of the pronotum, known as the crest. Gathered and examined are all the records of this genus in order to determine the intra- and interspecific morphological variability. The crest is found to be morphologically quite variable. In light of this finding, a taxonomic revision of the genus is performed in order to solve the now-apparent ambiguities. Within the genus Lophotettix, we defined two subgenera: (i) L. Lophotettix Hancock, 1909, a nominotypical subgenus, now encompassing L (L.) brevicristatus and L. (L.) zumbadoi, with the latter exhibiting marked variability, suggesting that it could be a complex of species, and (ii) L. Corticotettix Kasalo et Skejo subgen. nov. which encompasses L. (C.) alticristatus and the L. (C.) (unicristatus) species group with the species L. (C.) (u.) unicristatus and L. (C.) (u.) hancocki. An annotated key to the species of the genus Lophotettix is given.

We describe the behaviour of Dolichoderus quadripunctatus (L.), an oligogyne ant species, during baiting experiments. Numerous alate gynes (mostly unmated) walked along foraging trails of conspecific workers, but only occasionally a gyne licked the carbohydrate food regularly consumed by the workers. Based on the behaviour of these gynes and previous knowledge of the structure of the foraging trails of D. quadripunctatus within polydomous colonies, the structure and social organisation of these colonies, and the biology of the species, we suggest that gynes may use a previously undescribed means of dispersal. By not returning to her birth nest but walking along intersecting trails, an alate gyne may fortuitously find an auxiliary queenless nest and become adopted there. This behaviour adds to the dispersal tactics known or suggested earlier. We discuss these by evaluating the published data, and conclude that the spatial pattern of colonies have been described in detail, but the means of dispersal of D. quadripunctatus gynes and colony are still poorly documented. Plausible means have been proposed, some potentially leading to supercolonies covering large areas.

Two new apterogynine species, Gynecaptera omanensis sp. nov. (male) and Micatagla neveenae sp. nov. (female), are described and illustrated from the Sultanate of Oman and the Kingdom of Saudi Arabia, respectively. The Afrotropical species, M. gestroi (Bischoff, 1920) (Eritrea, Ethiopia, Kenya) is recorded in the Arabian Peninsula for the first time from southwestern Saudi Arabia (Asir region).

Agroecomyrmecinae is a poorly-known subfamily of ants that includes just two extant genera and species, Tatuidris tatusia Brown et Kempf, 1968, a leaf-litter dweller from the Neotropics, and Ankylomyrma coronacantha Bolton, 1973, an arboreal inhabitant from West Africa. Two Agroecomyrmecinae genera have been described from Eocene fossils: Agroecomyrmex Wheeler, 1910 found in European amber (Baltic and Bitterfeld), and Eulithomyrmex Carpenter, 1935 found in North American shale (Florissant). There are published records of just seven specimens of Agroecomyrmex duisburgi (Mayr, 1868), the sole member of its genus. We found four additional A. duisburgi specimens, three from Baltic amber and one from Rovno (Ukraine) amber of similar age (Priabonian stage, 37.8–33.9 Ma). This increases number of known ant subfamilies in Rovno amber to 10, and indicates that Agroecomyrmecinae were distributed in the late Eocene on both the northern and southern coasts of the Paratethys Sea. Based on morphological features and the rarity of fossil remains, we suggest that Agroecomyrmex and Eulithomyrmex were most likely neither litter-dwelling nor arboreal, but were epigean species, living on the soil surface.

The cosmopolitan genus Nephus Mulsant is traditionally divided into several subgenera of uncertain status. Its nominotypic subgenus is known to occur mainly in Palaearctic, Afrotropic and Oriental Realms, with a single species recorded from North America. From the Australo-Pacific region only three species of Nephus were recorded so far, two from New Guinea and one from Fiji, however, none of them was assigned to any subgenus. The genus is recorded from the Australia for the first time, based on a revision of the type material of Scymnus compositus Lea, 1902 (= Nephus compositus (Lea) comb. nov.) and a new species, Nephus septentrionalis sp. nov. from Northern Territory and Queensland. Detailed illustrations, descriptions and distribution map are provided.

The mature larva of Trochoideus dalmani Westwood (Endomychidae: Pleganophorinae) is described and illustrated for the first time. Based on its characters and those of T. desjardinsi Guérin-Méneville, a preliminary diagnosis for the genus is provided. Larval morphology and phylogenetic relationships of Pleganophorinae with other Endomychidae are compared and summarized.

Two new species-groups of Lycocerus Gorham are defined, L. kuatunensis group and L. continuatus group, which could be differentiated from all others except L. canthariformis (Ishida, 1986) by the aedeagus with conjoint dorsal plates of parameres. The L. kuatunensis group is composed of five species, including L. kuatunensis (Wittmer, 1995), L. svihlai (Wittmer, 1995) comb. nov., L. nigroapicis Y. Yang et X. Yang, 2013, L. bifurcatus Y. Yang et X. Yang, 2013, and L. nigrigenus Y. Yang et X. Yang, 2013, and the L. continuatus group consists of two species, L. continuatus sp. nov. and L. parameratus Y. Yang et X. Yang, 2013. These two groups differ from each other in the aedeagus possessing longitudinal ridges on inner surface of conjoint dorsal plates of parameres or not, laterophyses compressed or slender, accessory gland uniformly thin or slightly enlarged apically. A morphological phylogenetic analysis shows that the two new groups are closer to the L. canthariformis subgroup of the L. vitellinus group due to the similarity in their aedeagi. The above species are provided with habitus photos, aedeagi, reproductive systems and abdominal sternites VIII of female. A key to the species and a distribution map are provided.

This paper is the fourth in a series on the genus Habroloma Thomson from China. It presents the results of a collecting survey to the fauna of Fujian province of China. Altogether, 25 species and subspecies were collected and identified from 34 collecting localities in the province, and detailed geographical distribution data are recorded, of which, five new species are herein described and illustrated: Habroloma compactiforme sp. nov., H. exsertipennis sp. nov., H. latipectum sp. nov., H. vermiculum sp. nov., and H. wupingensis sp. nov., 12 species are recorded as new to Fujian Province.

In the present paper Bothrichara anggi sp. nov. (New Guinea), B. grisea sp. nov. (New Guinea), Bothrionota ruzzieri sp. nov. (Sulawesi), Exostira transmontana sp. nov. (China, India, Myanmar), Kaindilagria opposita sp. nov. (New Guinea), Macrocasnonidea bifurcata sp. nov. (Borneo), and Oreogria arfak sp. nov. (New Guinea) are described and illustrated. New synonymy is proposed for Bothrichara Borchmann, 1916 (= Calogria Borchmann, 1916 syn. nov.), Borchmannia violaceocincta (Borchmann & Pic, 1912) (= Rouyerus (Borchmannia) violaceocincta var. diversicollis Borchmann & Pic, 1912 syn. nov., = R. (B.) dissimilis Borchmann in Borchmann & Pic, 1912 syn. nov., = R. (B.) dissimilis var. rufithorax Pic in Borchmann & Pic, 1912 syn. nov., = R. (B.) dissimilis var. lineaticollis Borchmann & Pic, 1912 syn. nov., = Borchmannia akiyamai Merkl, 1988 syn. nov.; = Borchmannia masumotoi Merkl, 1988 syn. nov.) and Chlorophila gemma Telnov, 2021 (= C. carinadorsum Liang, Zhou & Chen, 2022 syn. nov.). Taxonomic position of Costiferolagria grossepunctata (Borchmann, 1916) and C. octocostata (Borchmann, 1916) is discussed and lectotype is designated for Auristira octocostata. Interspecific variability is described and discussed for Sora marmoreipennis Merkl, 2019. Images of Borchmannia violaceocincta, Costiferolagria grossepunctata (Borchmann, 1916), C. octocostata (Borchmann, 1916), Macrocasnonidea quadrimaculata (Pic, 1912), and Sora bimucronata (Pic, 1926) are presented for the first time. New information is provided on the distribution of 25 East Asian and Papuan Lagriinae Latreille, 1825 (1820) including several corrections and additions.

Archaeoglenes matthewsi sp. nov. is illustrated and described from New Caledonia. Distributional map for all known taxa belonging to Arachaeoglenini is presented.

Hemerobius schedli Hölzel 1970 is recorded for the first time from Poland (Tatra Mountains). A total of 13 specimens were collected, of which 10 were females and three were males. One specimen (female) from Poland and one specimen (male) from North Macedonia were intended for molecular identification for the COI marker. Molecular studies of three European species from the H. nitidulus group collected in Poland and North Macedonia were carried out.