Male genitalia structure of the type species of the genus Augilina Melichar, 1914, Augilina longipes Melichar, 1914, is studied and illustrated for the first time. A new genus, Polychornum gen. nov., is erected to accommodate Augilina namboina Gnezdilov, 2013 (as a type species), A. tetraina Chen et Gong, 2021, and Symplana biloba Meng, Qin et Wang, 2020, with new combinations proposed – Polychornum namboinum (Gnezdilov, 2013), comb. nov., P. tetrainum (Chen et Gong, 2021), comb. nov., and P. bilobum (Meng, Qin et Wang, 2020), comb. nov. Augilina triaina Chen et Gong, 2021 is placed in synonymy under Symplana biloba. Key to species of Polychornum gen. nov. is given.

The genera of the salpingid subfamily Inopeplinae are reviewed and presented in a key; new taxa are described, and the Australian fauna is revised. The following genera are described: Afropeplus gen. nov. (type species: Inopeplus zairensis Ślipiński, 1982) from Tropical Africa; Mascaropeplus gen. nov. (type species: Inopeplus darutyi Grouvelle, 1899) from Mauritius; Paederopeplus gen. nov. (type species: Paederopeplus herediae sp. nov.) from Central America and Platopeplus gen. nov. (type species: Ino bifossulatus Reitter, 1876) from Mexico to Brazil. A key is included to the species of Diagrypnodes and a new Australian species, D. australis sp. nov. is described. The genus Euryplatus Motschulskly is expanded to include a number of species formerly part of Inopeplus or other genera; as a result, thirty-nine new combinations and a new synonym are established. A key is given to the Australian species of Euryplatus, the following Australian species are described Euryplatus fulvus sp. nov. and Euryplatus tricolor sp. nov. Euryplatus decisus (Walker, 1858) comb. nov. is recorded from Christmas Island. The genus Eleusima Irmler, 2017 (type species: E. platysoma Irmler, 2017) is revalidated, and the New World inopeplines formerly included in Inopeplus are reassigned to Eleusima resulting in fifteen new combinations. New combinations and synonyms: AFROPEPLUS: A. zairensis (Ślipiński, 1982) (Inopeplus) comb. nov. ELEUSIMA: E. aeneomicans (Waterhouse, 1879) (Inopeplus), comb. nov.; E. assistans (Blackwelder, 1843) (Inopeplus), comb. nov.; E. centralis (Sharp, 1899) (Inopeplus), comb. nov.; E. concolor (Sharp, 1899) (Inopeplus), comb. nov.; E. flavidorsis (Reitter, 1879) (Ino), comb. nov.; E. immunda (Reitter, 1879) (Ino), comb. nov.; E. insularis (Grouvelle, 1898) (Inopeplus), comb. nov.; E. jugularis (Sharp, 1899) (Inopeplus), comb. nov.; E. mutchleri (Blackwelder, 1943) (Inopeplus), comb. nov.; E. nigritula (Grouvelle, 1896) (Inopeplus), comb. nov.; E. picea (Grouvelle, 1891) (Ino), comb. nov.; E. praeusta (Chevrolat, 1858) (Ino), comb. nov.; E. reclusa (LeConte, 1880) (Ino), comb. nov.; E. striatula (Blackwelder, 1943) (Inopeplus), comb. nov.; E. wolcotti (Blackwelder, 1943) (Inopeplus), comb. nov. EURYPLATUS: E. amplus (Rougemont, 2016) (Eleusis), comb. nov.; E. andamanicus (Pal & Datta, 1982) (Inopeplus) comb. nov.; E. angulicollis (Lea, 1906) (Inopeplus), comb. nov.; E. apatani (Pal, 1992a) (Inopeplus), comb. nov.; E. beraneki (Reitter, 1884) (Inoplectus), comb. nov.; E. bicolor (Grouvelle, 1888) (Inopeplus), comb. nov.; E. biguttatus (Waterhouse, 1879) (Inopeplus), comb. nov.; E. borneensis (Olliff, 1883) (Inopeplus) comb. nov.; E. decisus (Walker, 1858) (Prognatha), comb. nov.; E. dimidiatus (Waterhouse, 1875) (Ino), comb. nov.; E. elongatulus (Reitter, 1879) (Ino), comb. nov.; E. ephippiatus (Pascoe, 1862) (Ino), comb. nov. (= Inopeplus olliffi Poll, 1887, syn. nov.); E. fasciipennis (Fairmaire, 1883) (Inopeplus), comb. nov.; E. frater (Grouvelle, 1897) (Inopeplus), comb. nov.; E. jairapurii (Pal, 1992a) (Inopeplus), comb. nov.; E. latus (Coiffait, 1981) (Eleusis), comb. nov.; E. macularis (Grouvelle, 1882) (Inopeplus), comb. nov.; E. marginatus (Grouvelle, 1882) (Ino), comb. nov., E. melanoleucus (Gestro, 1873) (Ino) comb. nov., E. metallescens (Fairmaire, 1881) (Inopeplus), comb. nov.; E. microlestiformis (Coiffait, 1981) (Eleusis), comb. nov.; E. mimetes (Grouvelle, 1914) (Inopeplus), comb. nov.; E. nigricorpus (Sen Gupta et al., 1977) (Inopeplus), comb. nov.; E. nitidus (Sen Gupta et al., 1977) (Inopeplus), comb. nov.; E. pacificus (Pal, 2007) (Inopeplus), comb. nov.; E. patkoicus (Pal, 1992b) (Inopeplus), comb. nov.; E. puncticeps (Grouvelle, 1899) (Inopeplus), comb. nov.; E. quadrinotatus (Gorham, 1873) (Ino), comb. nov.; E. sauteri (Grouvelle, 1913) (Inopeplus), comb. nov.; E. splendens (Grouvelle, 1903) (Ino), comb. nov.; E. subaeneus (Grouvelle, 1903) (Ino), comb. nov.; E. subvirescens (Reitter, 1878) (Ino), comb. nov.; E. syozoi (Sasaji 1986) (Inopeplus) comb. nov.; E. terminatus (Waterhouse, 1879) (Inopeplus), comb. nov.; E. trepidus (Pascoe, 1862) (Ino), comb. nov.; E. uenoi (Sasaji, 1984) (Inopeplus), comb. nov.; E. uenoi ohbayashii (Hatta, 1988) (Inopeplus), comb. nov.; E. venustus (Gestro, 1873) (Ino), comb. nov.; E. violaceipennis (Waterhouse, 1879) (Inopeplus), comb. nov. MASCAROPEPLUS: M. darutyi (Grouvelle, 1899) (Inopeplus) comb. nov. PLATOPEPLUS: P. bifossulatus (Reitter, 1876) (Ino), comb. nov.; P. nigripennis (Reitter, 1876) (Ino), comb. nov. URUMINOPEPLUS: U. distinctus (Sen Gupta et al., 1977) (Inopeplus), comb. nov.

The first suprageneric classification for the clerid subfamily Clerinae is proposed based primarily on the correlation of morphological synapomorphies to the nodes of major clerine clades recovered by recent multi-gene phylogeny estimates dealing with Cleridae. Hydnocerinae Spinola, 1844 new synonym is synonymised with Clerinae. Resurrected suprageneric terms include: Anthicoclerinae Opitz 2010 at the rank of subtribe (Anthicoclerina Opitz new status within Hydnocerini); Cleropiestinae Winkler, 1980 at the rank of subtribe (Cleropiestina Winkler new status within Opilonini); Dieropsinae Winkler, 1964 at the rank of tribe (Dieropsini Winkler new status within Opilonitae); Opilonidae Gistel, 1848 at the rank of supertribe (Opilonitae Gistel new status within Clerinae), tribe (Opilonini Gistel new status within Opilonitae) and subtribe (Opilonina Gistel new status within Opilonini); and Prioceridae Laporte, 1836 at the rank of tribe (Priocerini Laporte new status within Clerinae). Changes in rank for suprageneric terms currently in use include: Callimerini Kolibáč, 1998, lowered to subtribe (Callimerina Kolibáč new status within Hydnocerini); Hydnocerinae Spinola, 1844, lowered to tribe (Hydnocerini Spinola new status within Cleritae); Hydnocerini sensu Kolibáč, 1998, lowered to subtribe (Hydnocerina Spinola new status within Hydnocerini); Lemidiini Kolibáč, 1998, lowered to subtribe (Lemidiina Kolibáč new status within Hydnocerini). In addition to subfamily rank, Clerii Latreille, 1802 is employed as a supertribe (Cleritae Latreille new status), tribe (Clerini Latreille new status) and subtribe (Clerina Latreille new status). Newly proposed higher taxa include: Nataliini Bartlett new tribe; Nataliina Bartlett new subtribe (within Nataliini), and Cormodina Bartlett new subtribe (within Nataliini). Four informal groups are recognised: Dozocolletus group (Clerinae insertae sedis); Menieroclerus group (Clerinae insertae sedis); Odontophlogistus group (within Opilonitae); and Perilypus group (within Clerini). At the genus level: Allelidea Waterhouse, 1839 is transferred from Lemidiini to Hydnocerina; Brachyptevenus Pic, 1939 ‘sensu stricto’ is transferred from Callimerini to Hydnocerina; Pseudachlamys Duvivier, 1892 is transferred from Tillinae to Clerinae; and Sonaevenus Kolibáč, 1998 new status (formerly a subgenus of Brachyptevenus) is raised to full genus ranking. At the species level: Orthrius whitei (Gorham, 1876) new combination is transferred from Opilo; Oxystigmatium aterrimus (Hintz, 1902) new combination is transferred from Thanasimus; Pseudachlamys albopunctata (Hintz, 1905) new combination is transferred from Plathanocera Schenkling. A key to clerine suprageneric groups is presented. All suprageneric groups are morphologically defined, their molecular and morphological support discussed, historical context given, and constituent genera listed. Six clerine genera remain unplaced to any group.

We present the life history and trophic relations of the lichenophagous darkling beetle Helops glabriventris glabriventris Reitter, 1885 (Coleoptera: Tenebrionidae: Helopini), which is widespread in Cyprus. Adults of H. glabriventris feed primarily on Pseudevernia furfuracea (L.) Zopf (Parmeliaceae), which is the most widespread fruticose corticolous lichen in Cypriot forests of Pinus brutia Tenore, Cedrus brevifolia (Hook. f.) Meikle and Pinus nigra J.F. Arnold and Anatolian forests of Pinus brutia. Additionally, they can feed on the crustose corticolous lichen Hypocenomyce scalaris (Ach.) M. Choisy (Lecideaceae) as an alternative trophic source. We described and illustrated the last instar larva of this species, collected in the rotten wood of Pinus nigra. Fossorial adaptations of larvae are discussed and compared with other representatives of the tribe Helopini.

Data on the Passandridae collection of the Natural History Museum (London, United Kingdom), including type specimens of 50 names, of them 29 valid and 21 invalid, are presented. The type status of several specimens is clarified. Images of type and other significicant specimens are provided for 55 taxa, mainly for the first time. The history of the collection is discussed. New geographical or national records are provided for 26 species.

Type specimens representing the spider family Linyphiidae from the Władysław Kulczyński Linyphiidae Araneae collection are catalogued for the first time. Notes on the history of the entire spider collection of the Museum and Institute of Zoology (Warsaw, Poland) are provided. A total of 347 specimens belonging to 57 species and 2 subspecies from Europe and Asia, including 327 syntypes and 20 holotypes, are listed. Of these, 43 species were described by Władysław Kulczyński himself.