Volume 96

A report on a collection of scaritine beetles (Coleoptera: Carabidae) from Myanmar (Kachin State, Sagaing Region, Shan State, Yangon Region) is provided. The collection consists of 23 species belonging to ten genera. Three new species, Clivina octoconvexa sp.n., Parathlibops laevicollis sp.n., and Scapterus kuhlmanni sp.n. are described and illustrated. Nine species are newly recorded from Myanmar. In addition, a lectotype is designated for Scapterus crenatus (FABRICIUS, 1792) described from “India orientali”.

Hydroglyphus haucki sp.n. (Coleoptera: Dytiscidae) is described from Pakistan (Balochistan) and Iran (Bushehr). Specimens from Iran have been previously identified H. sinuspersicus HÁJEK & WEWALKA, 2009 and are here assigned to the new species. The distribution of H. sinuspersicus is restricted to the northeastern Arabian Peninsula, and additional records of this species from Oman are presented. Hydroglyphus hormuzensis HÁJEK & BRANCUCCI, 2011, described from the United Arab Emirates, Oman and Iran, is here recorded from Pakistan (Balochistan) for the first time.

We present an annotated checklist of the Swiss Hydraenidae (Coleoptera), based on literature data as well as on more than 4,300 records taken from specimens held in various museums and private collections. In total, 39 species are regarded as being part of the Swiss fauna, while 13 species, which were either incorrectly or doubtfully identified by previous authors or possess doubtful Swiss locality data, are excluded from the national list. Hydraena dentipes GERMAR, 1842 is recorded from Switzerland for the first time.

Thinobius mazuae sp.n. (Coleoptera: Staphylinidae: Oxytelinae) is described from the intertidal zone of Fugang Geopark, Taitung County, eastern Taiwan. The new species was collected from the gravelly margins of rockpools on a rocky shore. This represents the first record of the genus Thinobius KIESENWETTER, 1844 from Taiwan. Notes on the habitat and the associated intertidal insect fauna are provided.

The poorly known Anotylus oblongifer (LEA, 1931) (Coleoptera: Staphylinidae: Oxytelinae) from New Guinea is redescribed and compared to A. thiemeae sp.n., described herein from New Guinea. These two species show a surprising relatedness to the A. cimicoides species group. Both species are illustrated by photographs of their habitus, and the genitalia and male terminalia are depicted by line drawings.

A new species of the genus Gabrius STEPHENS, 1832 (Coleoptera: Staphylinidae: Staphylininae) is described from Afghanistan: Gabrius reuteri. The aedeagus of the new species and its close relative, G. insignis (LUZE, 1904), are illustrated.

A new species of the genus Hesperosoma SCHEERPELTZ, 1965 (Coleoptera: Staphylinidae: Staphylininae) is described: Hesperosoma (Paramichrotus) shavrini (Philippines: Mindanao). The aedeagus of the new species is illustrated and a habitus photograph is provided. The key to species of the subgenus Paramichrotus NAOMI, 1982 is updated.

The genus Rhynchocheilus SHARP, 1889 (Coleoptera: Staphylinidae: Staphylininae) of the subtribe Staphylinina is revised. The genus now comprises 21 species, seven of which are new to science: R. drescheri SCHILLHAMMER sp.n. (Indonesia: Java), R. gibbiventris SCHILLHAMMER sp.n. (W- and E- Malaysia, Indonesia: Sumatra), R. irene SCHILLHAMMER sp.n. (Laos, Thailand), R. kelantanensis SCHILLHAMMER sp.n. (W- and E- Malaysia), R. pacholatkoi SCHILLHAMMER sp.n. (India: Arunachal Pradesh), R. submetallicus SCHILLHAMMER sp.n. (China: Sichuan), R. taiwanensis SCHILLHAMMER & HU sp.n. (Taiwan). One species, R. limbatus (FAUVEL, 1895) is removed from synonymy with R. javanicus (EPPELSHEIM, 1895). Seven new synonymies are proposed: R. pectoralis SHARP, 1889 = R. exophthalmus HAYASHI, 1998 syn.n.; R. chrysites (FAUVEL, 1895) = R. beauchenei (FAUVEL, 1897) syn.n.; R. argenteus (FAUVEL, 1895) = R. germanus (CAMERON, 1932) syn.n., R. tibialis (CAMERON, 1932) syn.n., R. malaisei (SCHEERPELTZ, 1965) syn.n., and R. nepalensis (SCHEERPELTZ, 1976) syn.n.; R. quadricallosus (BERNHAUER, 1916) = R. magnificus (SEMENOV-TIAN-SHANSKIY & KIRSHENBLAT, 1938) syn.n. Rhynchocheilus assamensis (CAMERON, 1932) is transferred to the genus Phytolinus SHARP, 1889. Lectotypes are designated for Rhyncocheilus beauchenei FAUVEL, 1879, R. limbatus FAUVEL, 1895 and R. argenteus FAUVEL, 1895.

Omaliopsis cuccodoroi sp.n. (Coleoptera: Staphylinidae: Omaliinae) is described from Uganda. It was collected from a decaying stem of a giant Lobelia tree in the Ruwenzori Mountains National Park at an elevation of 3,350 m a.s.l.

Hydrochus grandicollis KIESENWETTER, 1870 (Coleoptera: Hydrochidae) is recorded from North Macedonia and Greece for the first time. Although this species is wide-spread in the western Mediterranean Region, there were no records from the Balkan Peninsula, except from the Istrian Peninsula (SW Slovenia). From Greece, this species is here recorded from 10 localities in five regions: Central Macedonia, Thessaly, Central Greece, Attika, and South Aegean. Hydrochus adiyamanensis TAŞAR, 2017 has so far been known only from the type locality in southeastern Turkey (Adıyaman Province). It is here newly recorded from five other Turkish provinces: Muğla, Antalya, Afyonkarahisar, Isparta, Diyarbakır.

Two new species of the genus Helophorus FABRICIUS, 1775 (Coleoptera: Helophoridae) are described: H. afghanus sp.n. and H. altoafghanensis sp.n. They are compared with the most similar H. altaicus GANGLBAUER, 1901 and H. aspericollis ANGUS, 1973. New faunistic records are provided for H. altaicus and H. aspericollis.

An updated, third version of the Catalogue of Palearctic Elmidae (Coleoptera: Dryopoidea) is presented, following JÄCH et al. (2006) and JÄCH & KODADA (2016). Compared to JÄCH & KODADA (2016), 75 new names of the species group were added. Taking into account all nomenclatural acts (synonymies, resurrections, etc.) published since 2016, the Palearctic checklist currently includes 35 genera and 346 species/subspecies. It is emphasized that, for practical reasons, the demarcation between the Palearctic and the Oriental Region here follows national boundaries. As a consequence, this catalogue does also include a significant number of strictly Oriental species, as for instance those described from southeastern China. The name Zaitzevia fodingshanus JIANG & CHEN, 2025 is changed mandatorily to Z. fodingshana.

A new species of Caccothryptus SHARP, 1902 (Coleoptera: Limnichidae: Limnichinae) from Vietnam, C. parvus, is described. The species is characterized by a unique combination of external morphological and genital characters that do not correspond to any of the previously recognized species groups. A new species group, the C. parvus group, is therefore proposed to accommodate this species. Two species, C. schillhammeri HERNANDO & RIBERA, 2017 and C. thai HERNANDO & RIBERA, 2017, formerly assigned to the C. compactus species group by HERNANDO & RIBERA (2017), are here transferred to the C. testudo species group. Illustrations of the habitus and diagnostically important structures are presented. An updated checklist of the genus is also included.

Augyles kocareki sp.n. (Coleoptera: Heteroceridae) from Cambodia is described, illustrated and compared with similar species. The following species are reported from Cambodia for the first time: Augyles kaalo (MASCAGNI, 1995), A. luciae (MASCAGNI, 1993), A. weigeli SKALICKÝ, 2003, Heterocerus jaccoudi MASCAGNI, 2007 and H. lorenzevae MASCAGNI, 1993.

Crassopinarus gen.n. from French Guiana (Coleoptera: Curculionidae: Conoderinae). The new genus includes two new species: C. eschweilerae and C. nigromaculatus. Crassopinarus eschweilerae is associated with fallen fruits of Eschweilera decolorans SANDWITH, 1932 (Lecythidaceae). Habitus photographs of both new species are provided.

A new species of Afroryzophilus LYAL, 1990 (Coleoptera: Curculionidae: Brachycerinae: Tanysphyrini), Afroryzophilus boroveci, differing from other species of the genus especially in its peculiar vestiture, is described from the Northern Cape in South Africa.

The beetle fauna of the Kranebitter and Völser floodplains of the Inn River (Tyrol, Austria) (Coleoptera). In the years 2018 and 2019, the entomological working group of the Tirolean State Museum examined two protected areas respective their beetle fauna. This was done as a part of their main task, the federal state faunal documentation. The qualitative survey of the Inn River floodplains and floodplain forests of Kranebitten and Völs (west of Innsbruck, Tyrol, Austria), yielded 947 beetle species on 28 hectare biotope area. Generated results from the investigation area have been compared with historical data (before 1970) of the region. Although 87 species could not be detected any more, the study revealed 20 new species for the provincial fauna. Aside from the full species list, additional faunistic data on 46 notable as well as on the 87 missing species are provided.

Noteworthy faunistic records of beetles from Austria (XXIII) (Coleoptera). Faunistic data of 39 beetle species in 22 families are provided, mostly from the Federal Province of Salzburg, but also from Vorarlberg, Carinthia, Styria, Lower Austria, Vienna and Burgenland. Twelve species are recorded from Salzburg for the first time: Agonum viridicupreum (GOEZE, 1777) (Carabidae), Aulonothroscus brevicollis (BONVOULOIR, 1859) and Trixagus elateroides (HEER, 1841) (Throscidae), Phaenops cyanea (FABRICIUS, 1775) (Buprestidae), Stelidota geminata (SAY, 1825) (Nitidulidae), Microgramme ruficollis (MARSHAM, 1802) (Latridiidae), Colydium noblecourti PARMAIN et al., 2024 (Zopheridae), Abdera flexuosa (PAYKULL, 1799) (Melandryidae), Sitaris muralis (FORSTER, 1771) (Meloidae), Maladera holosericea (SCOPOLI, 1772) (Scarabaeidae), Xylotrechus rusticus (LINNAEUS, 1758) and Saperda perforata (PALLAS, 1773) (Cerambycidae). Other new province/country records: Ochthebius crenulatus MULSANT & REY, 1850 (Hydraenidae) from Lower Austria, Esolus pygmaeus (Elmidae) from Styria and Slovenia, Donacia sparganii AHRENS, 1810 (Chrysomelidae) from Carinthia, and Plateumaris bracata (SCOPOLI, 1772) (Chrysomelidae) from Burgenland. The remaining records include several species, which have not been found for decades.

The suitability of Aquazol 50 (poly(2-ethyl-2-oxazoline), or PEOX) for mounting and embedding of entomological preparations, especially dissected insect genitalia, was tested by the authors. Aquazol resin is soluble in water and other hydrophilic solvents, chemically stable, non-volatile, and, upon drying, forms an optically clear, well-adherent resin suitable for card and slide mounts. Tests against other media under different ambient conditions confirm its favourable properties. Aquazol 50 is widely used in artwork conservation. Literature data, together with our own results, indicate very good long-term stability under typical storage conditions for insect collections. A second medium, composed of polyvinylpyrrolidone – vinyl acetate copolymer (PVP/VA 64) plasticised with polyethylene glycol 600, is also tested. It shows similarly favourable properties and may serve as an alternative.