Wet litter can harbour a diverse copepod fauna, and plays a not yet fully understood role in the dispersal of groundwater organisms. A new species of Bryocyclops, a circumtropical genus occurring in cave and semiterrestrial habitats, has been found in the leaf litter of Laurisilva, the native and relict forests on Madeira Island. Bryocyclops laurisilvae sp. nov. belongs to a species assemblage traditionally named as Group I in the genus. The new species can be distinguished from other species by several apomorphic features, such as the sexually dimorphic setation of the endopodites of leg 3 and leg 4, and the oligomerized maxilliped. A sister relationship between B. laurisilvae sp. nov. and stygobiotic B. absalomi Por, 1981 (Israel) is supported by, among others, the apomorphies of leg 3 in male and leg 4 in female. The new species differs from B. absalomi in the presence of coxopodite seta on leg 1, the shorter dorsal and longer posterolateral and outer terminal caudal setae, and the acute, hook-like tip of the apical spine on the distal endopodite segment of leg 3 in the male. The relationships of the laurisilvae-absalomi clade remains ambiguous, as the limb morphology in many species is still insufficiently understood.

Two new Philippine genera and four new species of Cercopidae are described: Phantagma Crispolon et Le Cesne gen. nov., for P. garciai Crispolon et Soulier-Perkins sp. nov., P. maarati Crispolon et Le Cesne sp. nov., and Vinpietri Crispolon et Soulier-Perkins gen. nov., for V. cahatianae Crispolon et Soulier-Perkins sp. nov. and V. yapae Crispolon et Le Cesne sp. nov. Illustrations and complementary descriptions are also provided for the two species of the related genus Jacobsoniella Melichar, 1914. Description of male terminalia (where possible) and illustrations and keys to species are provided for all three genera. Molecular data support the description of Phantagma and Vinpietri as genera distinct from Jacobsoniella.

Fiji is an archipelago in the South Pacific Ocean from which only four species in four genera of Tetrigidae had previously been reported. We report the results of our examination of the Fijian Tetrigidae from the Queensland Museum, Brisbane, and additionally the Nederlands Centrum voor Biodiversiteit (Naturalis Biodiversity Center, formerly Nationaal Natuurhistorisch Museum Naturalis), Leiden. The Fijian fauna is found to be similar to, and therefore likely derived from, the New Guinean fauna. The validity of Asian Metrodorinae is called into question. The following new taxa are described: tribe Exanimini trib. nov. including genera Exanimus gen. nov. (including E. somniator sp. nov. and E. torviscriba sp. nov.) and Fijixistra gen. nov. (including F. abbreviata (Bolívar, 1887) comb. nov. of Amphinotus abbreviatus, F. drobnaki sp. nov., F. teo sp. nov., and F. tvrtkovici sp. nov.); tribe Fijitettigini trib. nov. including genera Fijitettix gen. nov. (including F. godeffroyi (Günther, 1939), comb. nov. of Salomonotettix godeffroyi) and Salomonotettix Günther, 1939 (including S. vincekae sp. nov.); genus Gammonotus gen. nov. including Gammonotus draudrau sp. nov. Exanimini trib. nov. and Fijitettigini trib. nov. are of uncertain taxonomic placement, Gammonotus gen. nov. is assigned to Cladonotini Bolívar, 1887, and Thyrsus tiaratus Bolívar, 1887 is transferred from Cleostratini Bolívar, 1887 to Clinophaestini Storozhenko, 2013.

The present study is based on specimens collected in coffee orchards Coffea arabica L. using Malaise traps on three mountains in Southwestern of Saudi Arabia: Sala Mountain (Al-Aridah), Samad Mountain (Al-Aidabi), and Talan Mountain (Al-Dayer). Thirteen species are identified belonging to nine subfamilies: Agathidinae (two species: Coccygidium luteum (Brullé), and C. melleum (Roman)), Alysiinae (single species: Aphaereta sp.), Brachistinae (two species: Triaspis flavipalpis (Wesmael), and Triaspis thoracica (Curtis)), Cardiochilinae (two species: Schoenlandella subvariegata Edmardash & Gadallah sp. nov., and S. testacea (Kriechbaumer)), Cheloninae (single species: Phanerotoma granulata van Achterberg), Doryctinae (single species: Spathius nixoni Belokobylskij & Maetô), Euphorinae (single species: Syntretus (Exosyntretus) sp.), Pambolinae (single species: Phaenodus pallipes Foerster), and Telengaiinae (two species: Gnamptodon adami Gadallah & Edmardash sp. nov. and G. samadensis Gadallah & Edmardash sp. nov.). The three following subfamilies are recorded for the first time for the Arabian Peninsula: Brachistinae, Cardiochilinae and Pambolinae. The presence of the subgenus Syntretus (Exosyntretus) in traps from Jazan (Saudi Arabia) constitutes the second record of this taxon in the Afrotropical region. Furthermore, the subfamily Alysiinae, the genus Spathius Nees, 1819 (Doryctinae), and two species: Coccygidium melleum (Roman, 1910) (Agathidinae), and Phanerotoma granulata van Achterberg, 2021 (Cheloninae) are first records for Saudi Arabia.

Crematogaster ourea sp. nov. is described from the Parnon Mountains, Peloponnese, Greece based on the worker caste. The new species bears characters intermediate between members of taxa grouped within Crematogaster ionia and Crematogaster cypria complexes. The preliminary key to all Greek members of the genus Crematogaster is proposed.

We describe a new ant species from the north of the Iberian Peninsula, Myrmica babiensis sp. nov., a parasitic species of Myrmica aloba Forel, 1909. This new species is characterized by the exceptionally big body size, the lack of the carina or lobe in the base of the scape, the presence of conspicuous hairs on the eyes, and a very wide postpetiole. In this study, we also provide an illustrated key to all European parasitic Myrmica. Including M. babiensis sp. nov., the number of parasitic Myrmica species from the Iberian Peninsula rises to five. Additionally, we analyse the myrmecofauna of Babia and Luna, the mountainous regions where M. babiensis sp. nov. has been found, mostly composed of eurosiberian widespread species.

We carry out the taxonomic review of two genera, Cernyia Bucsek, 2012 and Denteilema Dubatolov, 2012, based on external morphology, male genital and genetic attributes (COI). Cernyia neocretacea Singh & Kirti, 2016 is synonymized with Denteilema cretacea (Hampson, 1911). A new species i.e., Denteilema nyishi sp. nov., morphologically reminiscent of D. cretacea, is described from Northeast India. We restore the original combination of Cernyia pseudobrevivalva (Dubatolov & Bucsek, 2016), comb. rev., a new record to India, as Katha pseudobrevivalva and transfer Cernyia longpala (Holloway, 2001) to genus Katha Moore, 1878, as a new combination. Our investigation revealed that the true Cernyia is a group of four strictly cryptic species i.e., C. pseudocretacea (Holloway, 2001), C. furcatus (Fang, 2000), C. arizana (Wileman, 1910) and C. kosterini Dubatolov & Bucsek, 2013. Results are supported with male genital attributes, diagnosis, illustrations, references and DNA barcode analysis.

A new species of Rhopalobates Fairmaire, 1897 (Coleoptera: Tenebrionidae: Stenochiinae) is described from Arunachal Pradesh, India, representing the third known species of the genus. The new taxon description is accompanied by illustrations, diagnosis, and the identification key to the species.

The phylogenetic placement of the tribe Dissonomini Medvedev, 1968 (Coleoptera: Tenebrionidae) is investigated using sequences from a historical museum specimen of Dissonomus tibialis Reitter, 1904, along with representative sequences and specimens from the subfamilies Blaptinae (tribes Amphidorini, Blaptini, Dendarini, Opatrini, Pedinini, Platynotini), Tenebrioninae (Bolitophagini, Helopini), Pimeliinae (Adesmini, Sepidiini, Tentyriini, Zophosini), Alleculinae (Alleculini), and Lagriinae (Lagriini). Maximum likelihood and Bayesian analyses were performed on a multi-loci dataset (548 loci spanning 178,309 amino acids). The resulting trees render Dissonomini as sister to Blaptini within Blaptinae with high support. This phylogenetic relation is further supported by morphological traits (e.g., lack ancorae, tenebrionoid protrochanters). As a result, Dissonomini is placed within Blaptinae.

In the present paper, the authors provide a comprehensive description of the morphology and biology of all developmental stages of the rove beetle Philonthus spinipes Sharp, 1874, which is regarded as an adventive species in Europe. Material for study was obtained through rearing from eggs laid by wild caught adults. The most important diagnostic characters distinguishing the egg of P. spinipes from the eggs of other species of Philonthus Stephens, 1829 are: posterior pole trapezoidal in shape and with c. 800 aeropyles forming 12–13 longitudinal rows each bearing 60–65 aeropyles. The final larval stadium (L3) is distinguished by: anterior margin of nasale with seven teeth; epipharynx with cuticular processes anteriorly forming uniform row; anterior tibia with two combs of 9 and 8 setae; urogomphus one-segmented, thin and very long; apical seta of urogomphus minute. Compared with L3, the first larval stadium (L1) differs in its dimensions, body colour and shape, as well as the antennal structure, nasale, epipharynx and mandible, and the number of setae on the legs and on the thoracic and abdominal sclerites. The pupa of P. spinipes possesses all the characters typical of the subtribe Philonthina. It is very much larger than the pupae of other Philonthus species; further differences include a pronotum with 14 or 16 setiform projections, antennae extending to one-third of the elytral length, and hind tarsi protruding well beyond the posterior margin of segment III. The average duration of the life cycle of P. spinipes is 28 days, which is much shorter than that of other Philonthus species inhabiting similar environments. The current knowledge regarding the zoogeography of P. spinipes is summarized. Questionable distributional data in the literature have been verified, leading to the first record of P. spinipes in Serbia and the removal of this species from the list of rove beetles of Armenia. The precision and detail of this paper place P. spinipes among the rove beetles with the best-known natural history. Importantly, this focused study may allow for a better understanding of the expansion of this species across the Palearctic.

Two new species of Amasa Lea, 1894 ambrosia beetles, Amasa yunnanensis sp. nov. and Amasa setosa sp. nov. from Yunnan Province, Southwestern of China are described. New provincial distribution records are reported for three Chinese species of Amasa.

Three new species are described in Acanthocinini (Lamiinae): Leptostylus wappesi sp. nov., from Honduras; Leptostylus densepunctatus, sp. nov., from Mexico (Guerrero); and Pseudastylopsis aenigma sp. nov., from Mexico (Guerrero and Jalisco). Two species of Elaphidiini (Cerambycinae) represent new state records in Mexico: Anelaphus hirtus Chemsak & Noguera, 2003 (Michoacán); and Cicatrisphaerion wappesi Lingafelter, Morris, Skillman & Santos-Silva, 2021 (Yucatán).

This paper is the ninth in a series of studies on the genus Habroloma Thomson from China. Nine new species are described and illustrated: Habroloma (Parahabroloma) daizu, sp. nov., H. (P.) extensocolle, sp. nov., H. (P.) linchuan, sp. nov., H. (P.) multicolorum, sp. nov., H. (P.) poyangense, sp. nov., H. (P.) qitangshanense, sp. nov., H. (P.) subgraciliforme, sp. nov., H. (P.) tongi, sp. nov. and H. (P.) wannianicum, sp. nov.