Multi-approach characteristic of Oudemansidium komareki contains the morphological data based on several dozens of larvae along with the first molecular data on the mitochondrial COI and 28S gene obtained for the species. The ectoparasitic mites were collected from Myotis capaccinii (new host record) and Pipistrellus pipistrellus in Romania. A case of multiparasitism of two species of Oudemansidium – O. komareki and O. musca on common pipistrelle (P. pipistrellus) is reported, and complementary data to the knowledge of the morphology of O. musca support a separate identity of both species. The verified diagnoses of O. komareki and O. musca, resulting from widening the knowledge of intraspecific variation, are proposed and the characters that allow differentiating the species presently assigned to Oudemansidium are discussed.

Based on the recent developments by studies on the Aphaenogaster subterranea group and new molecular data, we provide a revision that summarizes the knowledge on the diversity and distribution of its members. We describe two species new to science: A. asterioni Borowiec, Menchetti, Salata, Vila & Zięcina sp. nov. and A. tristis Borowiec, Menchetti, Salata, Vila & Zięcina sp. nov. Aphaenogaster lesbica Forel, 1913 syn. nov. is proposed as a junior synonym of A. subterranea (Latreille, 1798); A. kurdica Ruzsky, 1905 is excluded from the subterranea species group, and the following species are redescribed: A. epirotes (Emery, 1895), A. holtzi (Emery, 1898), and A. subcostata Viehmeyer, 1922. A key to workers of all species belonging to the subterranea species group is proposed. Lectotypes are designated for: A. ichnusa Santschi, 1925, A. holtzi (Emery, 1898), and A. subcostata Viehmeyer, 1922.

Fossil record of caddisflies with both larvae and their cases is exceedingly rare. This study focuses on a 99-million-year-old Burmese amber specimen containing a caddisfly larva and its case, alongside other organisms. The specimen was examined using microscopy, photography, widefield fluorescence imaging, and micro-CT scanning to analyze its structure and identify associated organisms. The amber contains a diverse assemblage, including a caddisfly larva, a mayfly nymph, water mites, a terrestrial bug nymph, and a beetle larva. Detailed morphological descriptions reveal adaptations of the caddisfly larva for aquatic life and case construction, shedding light on its taxonomic classification and behavioral adaptations. The proximity of the caddisfly larva to a layer of debris suggests it inhabited a shallow, slow-flowing stream environment. Morphological features indicate its classification within the suborder Integripalpia, with characteristics bridging primitive forms and more derived lineages. Behavioral traits such as case abandonment highlight adaptive strategies for survival and dispersal in response to environmental stressors. This study contributes to understanding ancient aquatic ecosystems and the evolutionary history of caddisflies. It reveals insights into symbiotic relationships, behavioral adaptations, and ecological dynamics, emphasizing the significance of fossilized remains in elucidating past life forms and aquatic environments.

Two new fossil ant species Cataglyphoides komvos sp. nov. and C. konikos sp. nov. are described from late Eocene Rovno amber (Ukraine). The first species has a nodiform petiole and differs from C. dlusskyi Radchenko et Khomych, 2020 by the presence of coarse bristle-like hairs on the tibiae and a double row of bristles on the inner surface of the metatibiae, by the presence of a longitudinal carina on the clypeus, and by the position of the eyes, which are situated far beyond midlength of the sides of the head. Cataglyphoides komvos differs from C. constrictus (Mayr, 1868) by a shorter antennal scape, exceeding the occipital margin by ca. 0.4 of its length, the shorter funicular segments, the 1^st to 10^th segments < 1.7 times and apical segment < 3.0 times as long as wide, as well as the structure of the maxillary palps. Cataglyphoides konikos resembles C. intermedius Dlussky, 2008 by a non-nodiform petiole with thick scale, and differs from it by subcuneiform scale, the presence of numerous thin erect hairs on the mesosomal dorsum and all gastral tergites, and by the structure of the maxillary palps with the 4^th segment somewhat shorter than the 5^th. A key to identification of the Cataglyphoides Dlussky, 2008 species is compiled. The taxonomic position of the fossil genera currently assigned to the tribe Formicini Latreille, 1802 is discussed.

Classification of the family Ptilodactylidae is reviewed. A new ptilodactylid subfamily, Byrrocryptinae subf. nov., is proposed for the genus Byrrocryptus Broun and detailed redescription is provided for Byrrocryptus variegatus (Carter). Summary of Ptilodactylidae biology and description of the larvae of Byrrocryptus are included. Two new Australian species Ptilodactyla escalonai sp. nov., and Pherocladus monteithi sp. nov. from Northern Queensland are described. A key is provided to adults of Australian ptilodactylid genera. Former subfamily Cladotominae, including Austrolichas Lawrence & Stribling, is removed from Ptilodactylidae and regarded as a separate family Cladotomidae Pic, 1914.

The ladybird genus Empia was established by Weise in 1901 to accommodate a single species, Empia vittata Weise from Sri Lanka. Since its description, the genus has attracted very little attention, and its systematic position in modern classification of the subfamily Coccinellinae has remained unclear. Here we provide a revisionary study based on the type and non-typical material of E. vittata, and description of a new species, Empia indica sp. nov. from Tamil Nadu, South India, which is the first report of Empia from India. Lectotype for E. vittata is designated. Habitus and the female genitalia of Empia are illustrated for the first time along with scanning electron microscopy (SEM) illustrations of the key characters. Position of the genus within the subfamily Coccinellinae is discussed and as a result Empia is hereby transferred from Coccidulini to Sumniini based on several morphological characters.

A list of the Apioninae occurring in Australia is verified taxonomically to follow the current classification of this weevil group. The genus Apiotherium Beguin-Billecocq is re-considered to comprise a large complex of related species occurring in Africa, the Oriental Region and Australia. The formerly distinct genera Harpapion Voss, Flavopodapion Korotyaev, and Sterculapion Rheinheimer are treated here as new junior synonyms of Apiotherium. The Palaeotropical genera Pseudaspidapion Wanat and Pseudoconapion Voss are recorded from Australia for the first time. The following 37 new generic combinations are proposed: Apiotherium amabile (Lea), A. anthidium (Lea), A. astri (Lea), A. binotatum (Lea), A. carpophagum (Lea), A. commersoniae (Rheinheimer), A. comosum (Pascoe), A. condensatum (Lea), A. congestum (Lea), A. congruum (Lea), A. foveicolle (Lea), A. fraserianum (Rheiheimer), A. fuscosuturale (Lea), A. immundum (Lea), A. integricolle (Lea), A. melvillense (Lea), A. microscopicum (Lea), A. nigrosuturale (Lea), A. nigroterminale (Lea), A. niveodispersum (Lea), A. pulicare (Pascoe), A. parvocastaneum (Lea), A. pilistriatum (Lea), A. pseudofraserianum (Legalov), A. quadricolor (Lea), A. rivulare (Lea), A. symbolum (Faust), A. tasmanicum (Lea), A. teretirostre (Lea), A. turbidum (Lea), Pseudapion hoblerae (Lea), P. philanthum (Lea), Pseudaspidapion subopacum (Lea), Pseudoconapion pudicum (Lea), P. terrareginae (Blackburn), Pseudopiezotrachelus basiinflatus (Lea), P. convexipennis (Lea). In addition, four new combinations are proposed for non-Australian species: Apiotherium albopictum (Faust), A. corchori (Marshall), A. versutum (Faust), A. veterator (Hustache). Three new species synonyms of Australian species are proposed: Apion pictipes Lea, 1929 syn. n. of Apion condensatum Lea, 1899; Apion solani Lea, 1899 syn. n. of Apion pulicare Pascoe, 1874; Apion vertebrale Lea, 1910 syn. n. of Apion teretirostre Lea, 1899. Apion anthidium Lea, 1899 is redrawn from the synonymy with Apion integricolle Lea, 1899. The lectotypes of Apion pulicare Pascoe, 1874, Apion congestum Lea, 1910, Apion fuscosuturale Lea, 1899, Apion philanthum Lea, 1899, and Apion pudicum Lea, 1899 (illustrated) are designated. New distribution records of several Australian species are provided. Apiotherium symbolum (Faust) and unnamed members of genera Lopatinapion Friedman and Ommatocybus Wanat, as well as particular species-groups of genera Conapium Motschulsky (one) and Apiotherium (two) are newly recorded from Australia.