Manfred Jäch

• Naturhistorisches Museum Wien

A new species of the genus Limnius ILLIGER, 1802 (Coleoptera: Elmidae), L. balcanicus JÄCH & BROJER sp.n., is described from Bosnia and Herzegovina, North Macedonia, Greece, and Bulgaria. The new species is sister to the allopatric L. colchicus DELÈVE, 1963 from Turkey, Georgia and Armenia. The latter is here recorded from seven Turkish provinces f...

The genus Elmomorphus Sharp, 1888 is redescribed based on morphological characters. Elmomorphus bryanti Hinton, 1935, E. montanus (Grouvelle, 1913), E. prosternalis Hinton, 1935, and E. striatellus Delève, 1968 are redescribed based on type material. Elmomorphus nepalensis Satô, 1981 is redescribed based on material collected in the vicinity of the...

A faunistic overview of some families of aquatic beetles from the Samoan Archipelago (Gyrinidae, Dytiscidae, Noteridae, Hydrophilidae excl. Sphaeridiinae) is provided, based on a literature survey and on recent field work (2001–2018), as well as on material of the Bernice P. Bishop Museum (Honolulu, Hawaii, USA), collected in the 1950s and 1960s. D...

Limnebius asperatus KNISCH, 1922 (Coleoptera: Hydraenidae), originally described from "Italia" (without any precise locality information) and not found again since then, was surprisingly rediscovered by the first author in the northeastern Apennines (Emilia-Romagna and Tuscany) in 2020 and 2023. Twenty-four of the 25 specimens collected, were found...

Molecular data for 19 specimens of Elmis syriaca syriaca and E. s. zoufali from eight countries have been analysed in order to investigate the taxonomic status and the geographical distribution of these two subspecies. The nominative subspecies was previously thought to be endemic to the Levant (Israel, Lebanon, Syria), while E. s. zoufali was rega...

A single elmid larva is reported from a laminate maroon shale bed of Gurha opencast lignite mine (Palana Formation, early Eocene, Bikaner District, north-western Rajasthan, India). It is the first fossil larva that can be attributed to Elmidae with certainty. A generic assignation is not possible, because the larva is strongly compressed, and the m...

A review of the Helophorus guttulus group (Coleoptera: Helophoridae) is presented. Helophorus cos-tulatus KUWERT, 1887 is synonymized with H. guttulus MOTSCHULSKY, 1860. A lectotype is designated for H. nivalis GIRAUD, 1852. Determination of the exact type localities of H. costulatus, H. dor-mitans (SHARP, 1916) and H. guttulus is discussed. Data o...

Minute moss beetles (Hydraenidae) are one of the most speciose and widespread families of aquatic Coleoptera, with an estimated 4000 extant species, found in the majority of aquatic habitats from coastal rock pools to mountain streams and from the Arctic Circle to the Antarctic islands. Molecular phylogenetic works have improved our understanding o...

A new species of the water scavenger beetle, Regimbartia majorobtusa Mai, Jia, and Jäch sp. n., is described from China (Yunnan) and Thailand (Phitsanulok). It is the eleventh known species of this genus. Regimbartia attenuata (Fabricius, 1801 Fabricius, J.C. (1801), Systema Eleutheratorum … (Vol. 1), Kiliae: Bibliopolii Academici Novi, pp. 24–506....

Hydraena schuleri Ganglbauer, 1901 was rediscovered after 18 years in Starý Potok, a small stream in eastern Slovakia, and we recorded it, for the first time, from the small rivers Stará Rieka and Udava in southern and eastern Slovakia. Adults were collected mainly from submerged moss growing on rocks in shallow water, where they were found togethe...

Limnichidae are currently a moderately diverse beetle family with a sparse fossil record. Here we describe a new limnichid genus and species, Anomocephalobus liuhaoi Li, Jäch & Cai gen. et sp. nov., from the mid-Cretaceous amber from northern Myanmar. Anomocephalobus gen. nov. is tentatively assigned to the extant subfamily Cephalobyrrhinae, based...

With some 3,700 described species, Dryopoidea are a moderately diverse superfamily of beetles whose position within basal Polyphaga has been historically difficult to elucidate. Members of most extant dryopoid families are set apart from the majority of other polyphagans by their association with aquatic habitats, but little is known about the orig...

Okalia necopinata sp. nov. , from Sarawak, northwest Borneo, Malaysia, is described and illustrated along with an identification key. The standard barcoding fragment of the mitochondrial gene coding for cytochrome c oxidase subunit I (COI) was used together with morphological characters to delimit the taxonomic boundaries of the two known species,...

New faunistic data are presented for six water beetle families from Mongolia. The family Dryopidae, with the genus Dryops Olivier, 1791, and the genus Platambus Thomson, 1859 of the family Dytiscidae are recorded for the first time from Mongolia. Agabus semipunctatus (Kirby, 1837), previously known only from the Nearctic Region, is reported for the...

The forthcoming second edition of the Catalogue of Palaearctic Coleoptera (Vol. 6/2: Chrysomelidae, in prep.) will contain a lot of corrections and additions to the first edition (Vol. 6: Chrysomeloidea), published in 2010. The present article deals solely with the genus Donacia F ABRICIUS, 1775 and provides explanations for some of the corrections...

Phalilus oberthuri (GUIGNOT, 1935) (Coleoptera: Haliplidae) was rediscovered in New Caledonia after more than 130 years. In the years 2015, 2016 and 2020, seven specimens (six adults and one larva) were collected in three adjacent dolines (sinkholes) in the very southern tip of New Caledonia (Grande Terre). These three dolines are briefly character...

Noteworthy faunistic records of 60 species of Coleoptera from the Federal Province of Vienna (Austria) are provided. These species belong to the following 17 families: Carabidae, Spercheidae, Silphidae, Geotrupidae, Ochodaeidae, Aphodiidae, Melolonthidae, Dynastidae, Elateridae, Buprestidae, Elmidae, Scirtidae, Laemophloeidae, Mordellidae, Tenebrio...

The species of Elmomorphus Sharp, 1888 occurring in Japan and Korea are redescribed and illustrated: E. brevicornis Sharp, 1888 (Japan, Korea) and E. amamiensis Nomura, 1959 (Japan). The standard barcoding fragment of the mitochondrial gene coding for cytochrome c oxidase subunit I (COI) was sequenced and used together with morphological characters...

Epimetopidae are a small beetle family of the superfamily Hydrophiloidea, comprising 72 described species in three genera: the American Epimetopus Lacordaire, 1854 (56 species), Asian Eumetopus Balfour-Browne, 1949 (eight species) and African Eupotemus Ji & Jäch, 1998 (eight species, of which six are described as new here). In this study we illustr...

Ancyronyx lianlabangorum sp. nov. (Coleoptera, Elmidae), a new spider riffle beetle from the Kelabit Highlands (Sarawak, northern Borneo), is described. Illustrations of the habitus and diagnostic characters of the new species and the similar, polymorphic A. pulcherrimus Kodada et al. are presented. Differences to closely related species, based on...

Ancyronyx clisteri, a new spider riffle beetle species from Borneo, redescription of A. sarawacensis Jäch including a description of the larva and new distribution data for A. procerus Jäch using DNA barcodes (Coleoptera, Elmidae). ZooKeys 912: 25-64. https://doi. Abstract Ancyronyx clisteri sp. nov. (Coleoptera, Elmidae) a new spider riffle beetle...

BOLD dataset analysed in article: KODADA, J., JÄCH, M.A., FREITAG, H., ČIAMPOROVÁ-ZAŤOVIČOVÁ, Z., GOFFOVÁ, K., SELNEKOVIČ, D., ČIAMPOR JR, F. 2020. Ancyronyx clisteri, a new spider riffle beetle species from Borneo, redescription of A. sarawacensis Jäch including a description of the larva and new distribution data for A. procerus Jäch using DNA ba...

This study presents the first comprehensive investigation of population aspects and ecological traits of water beetles in oligotrophic hydrosystems with tufa formation in southeastern Europe. Diverse lotic habitats (springs, rivers and tufa barriers) were investigated monthly for one year in Plitvice Lakes National Park in Croatia. Elmidae were the...

The water penny beetles (Coleoptera: Psephenidae) of the Korean Peninsula are reviewed based on their external morphology and mitochondrial cytochrome c oxidase subunit I gene sequences. Four subfamilies, four genera, and four species, including a new species described herein, are recognized: Eubrianax ramicornis Kiesenwetter, 1874 (Eubrianacinae),...

Twenty-eight species of water beetles and shore beetles are recorded for the first time from Mongolia: Dytiscidae (16): Acilius sulcatus (Linnaeus, 1758), Agabus amoenus (Solsky, 1874), A. blatta Jakowlew, 1897, A. japonicus continentalis Guéorguiev, 1970, A. moestus (Curtis, 1835), A. thomsoni (Sahlberg, 1871), Bidessus nasutus Sharp, 1887, Colymb...

The halobiontic Ochthebius (s.str.) caudatus FRIVALDSZKY, 1883 is redescribed and recorded from Poland for the first time. Based on molecular data it is assigned to the O. marinus group. Its ecology is briefly described.

Dryops sulcipennis Costa, 1883 is recorded from Turkey for the first time. It was collected in a stream (Antalya Province), and from a light trap placed in a cotton field near Tigris River (Şırnak Province).

Stenelmis koreana Satô, 1978 (Coleoptera: Elmidae) is here recorded for the first time from Kyrgyzstan and Western Siberia. It was hitherto thought to be confined to Korea and the Russian Far East. The identification of a specimen from Kyrgyzstan was confirmed by DNA-sequencing after comparison with two sequences of S. koreana from Korea. The COI h...

Hydrochus ignicollis Motschulsky, 1860 is recorded from Iran (Gilan Province) for the first time. In addition, new Iranian provincial records are provided for two species: H. nodulifer Reitter, 1897 (Zanjan Province), and H. farsicus Hidalgo-Galiana, J€ach and Ribera, 2010 (Kohgiluyeh and Boyer-Ahmad Province). Photographs of the habitus, the male...

Four new species of Grouvellinus Champion, 1923 with very long median pronotal carina are described from China: G. hongkongensis sp. nov. (Guangdong, Guangxi, Hong Kong), G. longiusculus sp. nov. (Jiangxi), G. mediocarinatus sp. nov. (Fujian, Guangdong), and G. robustus sp. nov. (Anhui). These species are obviously closely related to G. bishopi Jäc...

Ochthebiinae, with c. 650 species distributed worldwide, are the second most speciose subfamily of the aquatic beetle family Hydraenidae. They are ecologically the most diverse hydraenid subfamily, with terrestrial species as well as species in almost all types of aquatic habitats, including hypersaline waters. Ochthebiinae include the tribes Ochth...

The morphology and head chaetotaxy of the second and third instar larvae of Laccobius (Yateberosus) sp. are described based on specimens collected in New Caledonia. The larvae agree with those of other subgenera of Laccobius Erichson, 1837 in most morphological characters including the morphology of head and mouthparts and the head chaetotaxy, whic...

This study presents new insights into ecological traits of water beetles in lotic karst habitats of the Eastern Mediterranean. The aims of the study were to investigate population aspects and ecological traits of water beetles. Data were collected monthly during one year from a large perennial river showing current anthropogenic disturbance. Altoge...

Elmis rietscheli Steffan, 1958 (Coleoptera: Elmidae) is a typical inhabitant of cold springs and small streams in the mountainous areas of Central Europe. Recently, three specimens of E. rietscheli were collected in the source area of the Šumi, a stream flowing from Mt. Ivanščica, northern Croatia. The morphological identification of the specimens...

Three new species of Parhydraenida Balfour-Browne, 1975 are described from southeastern Brazil: P. plesioformis, sp. n.; P. proboscis sp. n.; P. unicornis sp. n. The genus Parhydraenida is recorded from Minas Gerais for the first time, and P. hygropetrica Perkins, 1980 is recorded from Rio de Janeiro for the first time. We describe one secondary se...

The Grouvellinus acutus species group is established. In China, it includes three species, Grouvellinus acutus sp. nov. (Fujian, Guangxi), G. denticulatus sp. nov. (Yunnan), and G. fujianensis sp. nov. (Fujian, Guangxi), which are described herein. A possible case of hybridization is reported. Habitus photographs and detailed line drawings of the g...

New data on the distribution of sevenspecies of Hydraenidae and three species of Dryopidaefrom Russian Caucasus, Abkhazia and South Ossetia areprovided. Hydraena anatolica Janssens, 1963, Limnebiusmyrmidon Rey, 1883, Ochthebius adventicius Jäch, 1990,O. colveranus (Ferro, 1979) and O. difficilis Mulsant,1844 are recorded from Russia for the first...

New data on the distribution of seven species of Hydraenidae and three species of Dryopidae from Russian Caucasus, Abkhazia and South Ossetia are provided. Hydraena anatolica Janssens, 1963, Limnebius myrmidon Rey, 1883, Ochthebius adventicius Jäch, 1990, O. colveranus (Ferro, 1979) and O. difficilis Mulsant, 1844 are recorded from Russia for the f...

Ptilodactyla crenatostriata Redtenbacher, 1868 (Coleoptera: Byrrhoidea: Ptilodactylidae) described from Rio de Janeiro, Brazil, is transferred to the genus Phytocerum Costa, Vanin, Lawrence & Ide, 2003 (Coleoptera: Elateroidea: Cerophytidae). Based on the examination of the holotype, deposited in the Naturhistorisches Museum Wien, Austria, Phytocer...

The family Hydraenidae (Coleoptera) is recorded from Djibouti (East Africa) for the first time. Two new species are described: Limnebius (Bilimneus) josianae, and Ochthebius (s.str.) loulae (O. atriceps group). Three species are recorded from the African Continent for the first time: Hydraena (Hydraenopsis) arabica BALFOUR-BROWNE, 1951, Limnebius (...

Ochthebius (Cobalius) biltoni (Coleoptera: Hydraenidae) is described from Sicily (Italy).

The first fossil of the family Hydraenidae preserved in amber is described: Archaeodraena cretacea Jäch & Yamamoto, gen. et sp. nov. The description is based on a well-preserved individual found in Cretaceous amber from northern Myanmar (Burma). In general appearance, the new genus superficially resembles the extant genus Hydraena Kugelann, which i...

The superfamilies of Elateriformia have been in a state of flux since their establishment. The recent classifications recognize Dascilloidea, Buprestoidea, Byrrhoidea and Elateroidea. The most problematic part of the elateriform phylogeny is the monophyly of Byrrhoidea and the relationships of its families. To investigate these issues, we merged mo...

Limnebius (s.str.) agnieszkae sp. n. from the Crimean Peninsula (Ukraine) is described. It is a member of the Limnebius furcatus subgroup of the L. parvulus species group. The new species is very similar to L. stagnalis Guillebeau, 1890, from which it can be distinguished by the aedeagus only. Information about its habitat and a list of other water...

Hydraena matyoti sp. n. (Coleoptera, Hydraenidae) is described from the Seychelles, Indian Ocean. Hydraena mahensis Scott, 1913 is redescribed. The latter is here recorded from La Digue for the first time. A key to the species of the genus Hydraena Kugelann, 1794 of the Seychelles is presented.

[Request full text article by email or through Research Gate] The diversity of the aquatic and strictly riparian beetles of the Philippines is reviewed. A checklist (with 317 species and subspecies) of the aquatic and riparian Coleoptera of the Philippines is provided for the first time herein. This checklist covers the following families (number o...

The distribution of the Byrrhidae, Elmidae, Limnichidae and Psephenidae (Coleoptera: Byrrhoidea) of Iran is summarized. A total of eight species of Byrrhidae (four genera), 17 species of Elmidae (seven genera), two species of Limnichidae (one genus), and two species of Psephenidae (two genera) are listed. Curimopsis (Curimopsis) taurica Paulus, 197...

The genus Ochthebius LEACH, 1835 contains 365 palearctic species, but many species are still awaiting description. Although Europe is considered to be reasonably well explored with respect to this genus, the first author collected a new species during a field trip in October 2015. Ochthebius (s.str.) scopuli (Coleoptera: Hydraenidae), a member of t...

The distribution of Dryopidae and Heteroceridae (Coleoptera: Byrrhoidea) of Iran is summarized. A total of ten species of Dryopidae in three genera (Dryops Olivier, Parahelichus Löbl & Smetana, and Praehelichus Löbl & Smetana), and 18 species of Heteroceridae in two genera (Augyles Schiödte and Heterocerus Fabricius) are listed. Augyles hispidulus...

A new genus and species of Ptilodactylidae, Electrolichas circumbalticus gen. et sp. nov., the first fossil representative of the subfamily Anchytarsinae, is described from Baltic amber. This Eocene beetle can be distinguished from the extant genera of Anchytarsinae by the combination of the following characters: labrum transverse, terminal segment...

the distribution of the Byrrhidae, elmidae, limnichidae and Psephenidae (Coleoptera: Byrrhoidea) of iran is summarized. A total of eight species of Byrrhidae (four genera), 17 species of elmidae (seven genera), two species of limnichidae (one genus), and two species of Psephenidae (two genera) are listed. Curimopsis (Curimopsis) taurica Paulus, 197...

Conservation of biodiversity is a major concern due to climate change and pressure from human activities. Knowledge of aquatic insects and their ecology particularly in West Africa is still scanty and fragmented. To fill this gap, we investigated the structure of aquatic beetle assemblages from 18 lentic and lotic water bodies (rivers and reservoi...

Coleoptera: Elmidae and Protelmidae includes 151 extant genera and 1501 extant species as well as four fossil species described before 2015. Protelmidae are here elevated from tribal rank to family rank.

water beetles, Elmidae, complex species, Balkan, Pleistocene

Faunistic data of ten rare or little known species from Austria are provided. Clypastraea orientalis (REITTER) (Corylophidae), Tanymecus dilaticollis (GYLLENHAL) and Otiorhynchus albidus STIERLIN (Curculionidae) are recorded from Austria for the first time. New provincial records: Curculionidae: Tanysphyrus lemnae (PAYKULL) (Kärnten, Wien), Dytisci...

The Eocene elmid beetles known from Baltic amber so far are reviewed, and their natural environment is discussed. Palaeoriohelmis samlandica Bollow, 1940 is re-described based on examination of the holotype. The genus Palaeoriohelmis Bollow, 1940 is synonymized with Heterlimnius Hinton, 1935, and Palaeoriohelmis samlandica is transferred to Heterli...

In this paper an annotated checklist of Croatian riffle beetles is presented. It is a result of a literature review, revision of museum collections, implementation of results from various environmental impact and baseline studies, as well as field investigations throughout Croatia from 2002-2013. Altogether 23 species in eight genera of Elmidae wer...

Fauna Europaea provides a public web-service with an index of scientific names (including synonyms) of all living European land and freshwater animals, their geographical distribution at country level (up to the Urals, excluding the Caucasus region), and some additional information. The Fauna Europaea project covers about 230,000 taxonomic names, i...

Fauna Europaea provides a public web-service with an index of scientific names (including synonyms) of all living European land and freshwater animals, their geographical distribution at country level (up to the Urals, excluding the Caucasus region), and some additional information. The Fauna Europaea project covers about 230,000 taxonomic names, i...

FaEu Coleoptera 2 stats

Anisomeriini diving beetles contain only two enigmatic species, representing a remarkable disjunction between the Pacific Juan Fernández Islands (Anisomeria bistriata) and the South Atlantic Tristan da Cunha Archipelago (Senilites tristanicola). They belong to the Colymbetinae, which contain 140 species worldwide. Here we aim to reconstruct the evo...

New data on the distribution of 27 species of Hydraenidae and three species of Elmidae (Coleoptera) from Russia, Ukraine, Kazakhstan and Uzbekistan are provided. Ochthebius foveolatus Germar, 1824 and Stenelmis koreana Satô, 1978 are recorded from Russia for the first time. Other new records are: Ochthebius bernhardi Jäch et Delgado, 2008 (Ukraine)...

Ochthebius marijanmatoki (Coleoptera: Hydraenidae) is described from Greece (Evia Island). It is a member of the O. metallescens species group, and seems closely related with O. pretneri JÄCH, 1999 from Montenegro.

The Korean species of the riffle beetle family Elmidae are revised. Thirteen species belonging to nine genera are recognized including three new species, Grouvellinus aerosus sp. n., Zaitzeviaria kyungseoki sp. n., and Z. obesa sp. n., and one unidentified species of Ordobrevia Sanderson, 1953. Leptelmis coreana Jung and Bae, 2012 and L. ochra Jung...

Two new species of Ancyronyx Erichson, 1847 (Coleoptera: Elmidae) are described from Borneo: A. pulcherrimus (Brunei) and A. reticulatus (Sabah). Habitus views, illustrations of important characters as well as plastron structures of Ancyronyx reticulatus are presented and discussed.

Ochthebius hajeki sp. nov. (Coleoptera: Hydraenidae) is described from Socotra Island (Yemen). It is a member of the O. foveolatus subgroup (sensu JÄCH 1991). The new species differs from the two species of this subgroup occurring in the Arabian Peninsula (O. innexus Balfour-Browne, 1951, and O. harteni Jäch & Delgado, 2010) by its paler colouratio...

The Asian species of the Ochthebius (s.str.) vandykei KNISCH, 1924 group (Coleoptera: Hydraenidae) are revised taxonomically. This species group was formerly regarded as a separate genus (Neochthebius ORCHYMONT, 1932). Six new species are described: O. ahni (South Korea), O. asanoae (Japan: Honshu), O. hayashii (Japan: Honshu), O. matsudae (Japan:...

Ochthebius hivae is described from western Iran (Ilam and Khuzestan Provinces). It belongs to the O. metallescens Rosenhauer, 1847 species group. The aedeagal distal lobe of this species is remarkably variable.

No hydraenid species has hitherto been recorded from the Republic of Singapore. Eight species belonging to two genera (Aulacochthebius Kuwert, Hydraena Kugelann) are here recorded. Five new species of Hydraena are described: H. hendrichi (Singapore, Thailand, Malaysia, Indonesia), H. michaelbalkei (Singapore), H. paulmoritz (Singapore, Thailand, Ma...

Ochthebius hivae is described from western Iran (Ilam and Khuzestan Provinces). It belongs to the O. metallescens Rosenhauer, 1847 species group. The aedeagal distal lobe of this species is remarkably variable.

Limnebius dioscoridus sp. nov. (Hydraenidae) is described from Socotra Island (Yemen). It is the only hydraenid species known from Socotra.

Six new species of Hydraena KUGELANN (Coleoptera: Hydraenidae) are described: H. esquinita, H. lagamba, H. lascrucensis, H. pajarita, H. pilimera, and H. sanagergelyae. Hydraena brevis SHARP, 1882, H. pontequula PERKINS, 1980 and Ochthebius mesoamericanus PERKINS, 1980 are recorded for the first time from Costa Rica. A key to the species of the Hyd...

To date, 73 species of Ochthebius Leach, 1815 have been reported from Turkey. Twenty-seven of these species are endemic to Turkey (Ertorun, Jäch, Kasapoğlu & Darilmaz, in prep.). During faunistic surveys in Erzurum and Denizli, a new species of the Ochthebius metallescens species group was discovered. In the present paper, the new species is descri...

Hydraena (s.str.) tekmanensis sp. n. is described from northeastern Turkey (Erzincan and Erzurum Provinces). It is tentatively assigned to the H. rufipes group (H. eichleri complex).

Aim We test whether species of western Mediterranean aquatic Coleoptera of the ‘Haenydra’ lineage (Hydraenidae, Hydraena) originated through: (1) successive periods of dispersal and speciation, (2) range fragmentation by random vicariance, or (3) range fragmentation by geographic isolation owing to a general reduction of population density. Locatio...

Using morphological and molecular analyses, the existence of two undescribed species, H. diazi from north–eastern Spain and French Pyrenees, and H. fosterorum from north–central Spain is confirmed. These species are members of a European endemic complex of hydraenid beetles, the Hydraena emarginata–saga clade, belonging to the "Haenydra" lineage. T...

Hydraena schuleri Ganglbauer, 1901 is recorded for the first time from Hungary (Mátra Mountains and the Pilis Mountains).

The Iranian fauna of Hydraena Kugelann (Coleoptera: Hydraenidae) is updated. Eight species are described as

Remarkable cases of gregarious behavior of several Oriental species of Orectochilus DEJEAN, 1833 subgen. Patrus AUBÉ (Coleoptera: Gyrinidae) are reported from India, Thailand and Indonesia. Terminology and possible causes of gyrinid mass aggregations are briefly discussed. Three types of diurnal aggregations of O. (Patrus) haemorrhous Régimbart, 19...