Taxonomic notes on the genus Uéno, 1931 (Ephemeroptera, Baetidae), with description of three new species from Thailand.

Based on material recently collected in northern Thailand, the present study provides an updated of the genus , including . It comprises six species in Thailand, three of them being new species: Baetiella (Gratia) narumonae, Baetiella (Gratia) sororculaenadinae, Baetiella (Baetiella) bispinosa, Baetiella (Baetiella) baei, Baetiella (Baetiella) lannaensis and Baetiella (Baetiella) bibranchiaBaetiella (Baetiella) baei can be distinguished from other species by the reduction of the posteromedian protuberances on abdominal tergites I-III, the asymmetrical coniform terminal segment of labial palp, the distal margin of abdominal sternites VII-X each with a row of long, spatulate setae, the dorsal margin of femur with two long, robust setae distally. Baetiella (Baetiella) lannaensis is diagnosed by the posteromedian protuberances present on tergites I-VIII, dorsal margin of femur with a regular row of long, rounded, ciliated setae and body surface covered with numerous, dense, rounded scale-like setae.

A comprehensive DNA barcoding reference database for Plecoptera of Switzerland.

DNA barcoding is an essential tool in modern biodiversity sciences. Despite considerable work to barcode the tree of life, many groups, including insects, remain partially or totally unreferenced, preventing barcoding from reaching its full potential. Aquatic insects, especially the three orders Ephemeroptera, Plecoptera, and Trichoptera (EPT), are key freshwater quality indicators worldwide.

A new, widespread genus of Baetidae from South Asia (Insecta, Ephemeroptera).

Material collected on different islands across South Asia revealed a new genus of Baetidae with a widespread distribution, The larvae present important similarities with , but have paraglossae dorsally with an arc of long, spine-like setae in distal area; long, slightly feathered setae between prostheca and mola of both mandibles; and very slender legs with row of short setae at dorsal margin of femur. The male imago has an extraordinarily small 3 (apical) segment of gonostylus, which is much narrower than the apex of the 2 segment. The new genus includes five species: is described from Sumbawa (Indonesia) based on larvae, from Sumatra (Indonesia) based on larvae, from Borneo (Brunei) based on larvae, and (type species) is described from Sri Lanka based on a reared male imago with its larval and subimaginal exuviae; (Chang & Yang, 1994), from Taiwan, formerly described in Margobaetis Kang & Yang, 1994, a subgenus of Baetis Leach, 1815, and subsequently transferred to the genus Kazlauskas (in Novikova & Kluge), 1987, is transferred to the new genus.

A new species of the group (Ephemeroptera, Baetidae) from Morocco.

is the first representative of the group to be described from the Maghreb. It was collected from streams in the Rif region of northern Morocco. All species of the group are morphologically very similar, with slight differences in colour.

A new species of the genus Waltz & McCafferty, 1994 (Ephemeroptera, Baetidae) from the north of Morocco.

A new species of is described from northern of Morocco It can be separated from the other west Palearctic species by the gill number, the spination of the distal margin of tergites, the leg setation, and the paraproct shape and spination. This species is widespread in the study area but never abundant. It prefers small to medium streams with slow flow, and does not seem to be very sensitive to pollution and water logging activities.

New species of from Southeast Asia (Ephemeroptera, Baetidae).

Based on larvae collected in the Philippines, Borneo (Kalimantan), Sumba, and Sumatra, the presence of the genus in the Philippines and Indonesia is reported for the first time. Six new species are described and illustrated, two from the Philippines and four from Indonesia. A larval key to all species of the Philippines, Indonesia and neighbouring continental Southeast Asia is provided, morphological differences to the species of Taiwan are discussed as well.

First report of the Afrotropical genus Jacobus, McCafferty & Gattolliat (Ephemeroptera, Baetidae) from Southeast Asia, with description of a new species.

Recent collections in Thailand revealed the occurrence of the genus in Asia, formerly known from the Afrotropical Realm only. A new species of is described and illustrated based on larvae and eggs. Eggs of this genus are described for the first time.

Two new species and two new records of the genus Tenuibaetis Kang & Yang, 1994 (Ephemeroptera: Baetidae) from Indian Himalaya.

As part of ongoing exploration of the mayflies of streams and rivers of Indian Himalayan regions, we describe two new species of the genus Tenuibaetis based on recently collected materials from Western Himalaya viz., Tenuibaetis himani Kubendran, Vasanth & Subramanian sp. nov.

New synonyms and new species of European aquatic dance flies (Diptera, Empididae).

Knowledge of the European aquatic dance flies (Clinocerinae, Hemerodromiinae) is updated. The following new synonyms are proposed: Chelifera pallida Vaillant, 1981 with Chelifera diversicauda Collin, 1927, syn. nov.

First contribution to Novikova & Kluge in Cambodia (Ephemeroptera, Baetidae), with description of two new species.

Material collected in 2018 in Cambodia gives us first insights into the diversity of Novikova & Kluge, 1987 in this country. No species has been reported so far. We identified two new species using a combination of morphology and genetic distance (COI, Kimura 2-parameter).

Two new species of (Ephemeroptera, Baetidae) from the Mediterranean biodiversity hotspot.

The mayfly genus Waltz & McCafferty, 1994 encompassed 20 species and was represented across the West Palaearctic region by six species. Based on morphological (nymphal characters) and molecular (mitochondrial COI sequences) evidence, two new species are described: from Sardinia and from Israel. Both species are confined to narrow distribution ranges, in line with most of their congeners from the region.

A widespread new genus of Baetidae (Baetidae, Ephemeroptera) from Southeast Asia.

A reinvestigation of type and other material of Ulmer, 1913 and Müller-Liebenau, 1984, together with new material from Southeast Asia revealed a new genus, The above species are formally assigned to the new genus It is characterized by the presence of accessory gills ventrally near fore coxa and at the base of maxillae, a peculiar folding of the gonostyli developing under the cuticle of last instar male larvae, together with a unique combination of other larval characters. Besides the two formerly described species, five new species are identified using a combination of morphology and molecular characters (COI, Kimura 2-parameter distances), four species from Sumatra and one from the Philippines. They are described and illustrated at the larval stage.

Two new species of Eaton, 1869 from North Africa (Ephemeroptera, Baetidae).

Based on recently collected larvae from Algeria and Morocco, the species delimitation within the genus Eaton, 1869 in that region is validated. Two new species are described and illustrated, one from north-eastern Algeria, and one from North Morocco, using an integrated approach with morphological and molecular evidence. A table summarising the morphological differences between the new species and (Müller, 1776) from Central Europe is provided.

 gen. nov., a new mayfly genus (Ephemeroptera, Baetidae) from Thailand with description of two new species.

(Ephemeroptera: Baetidae) is established as a new baetid mayfly genus from northern Thailand. Two new species, and , are described. This genus is distinguished from other Baetidae by abdominal segment I, bearing a pair of enlarged, ventrally oriented single gills, covering abdominal sternites II-V; other gills have normal size and are dorsolaterally oriented.

Baetidae (Baetidae, Ephemeroptera) in the Maghreb: state of the art, key, and perspectives.

Among mayflies, Baetidae are often considered as easy to recognise at the family level, but difficult to identify at lower level. In several faunistic or ecological studies, the identification remains at the family level; Baetidae are generally considered as widespread and ubiquitous, therefore as poorly informative for ecological studies or bioassessments. Here, a straightforward identification key is offered to larvae of the ten genera of Baetidae reported from Maghreb based on easily observable and understandable characters.

First report of the genus (Ephemeroptera, Baetidae) from Thailand revealing a complex of cryptic species.

A new species of the genus Kang & Yang, 1994 is described from Thailand and the genus is reported for the first time from this country. is easily distinguished from other known by the complete absence of hindwing pads. Molecular evidence based on COI confirmed the validity of the new species.

Contribution to the knowledge of the genus Novikova & Kluge, 1987 (Ephemeroptera, Baetidae) in Central Asia.

Based on the original type material, the nymphal stage of the mayfly is redescribed; in parallel, a lectotype is designated. is the type species of the genus , and an accurate and complete knowledge of its morphology is crucial to the delimitation of this problematic genus and clarification of its phylogenetic affinities. Ambiguous characters, previously reported for this species in the literature are clarified.

New species of Novikova & Kluge from Southeast Asia and New Guinea (Ephemeroptera, Baetidae).

Material collected between 2006 and 2016 in Borneo, Sulawesi, and New Guinea further increased our knowledge of Novikova & Kluge in these regions. Five species were previously reported from Borneo, two from Sulawesi, and 33 from New Guinea. Six new species have been identified using a combination of morphology and genetic distance (COI, Kimura 2-parameter), one species from Borneo (Brunei), one from Sulawesi, and four from New Guinea.

A new species and first record of the genus Kaltenbach & Gattolliat, 2020 (Ephemeroptera, Baetidae) from Thailand.

The genus Kaltenbach & Gattolliat, 2020 is reported for the first time from Thailand, and is described as a new species based on larvae. It can be easily distinguished from other known species by the presence of triangular spines at the posterior margin of tergites VI-IX. COI sequences were obtained from all known species.

The success story of Novikova & Kluge in the Philippines (Ephemeroptera, Baetidae), with description of 18 new species.

Material collected between 1994 and 2020 in the Philippines, covering most main islands like Luzon, Mindoro, Palawan, Negros, Cebu, Leyte, and Mindanao and some smaller islands, substantially increased our knowledge of Novikova & Kluge in this archipelago. Only three species were previously reported: (Müller-Liebenau, 1982) and (Müller-Liebenau, 1982) from larvae and (Ulmer, 1924) from adults. Eighteen new species have been identified using a combination of morphology and genetic distance (COI, Kimura 2-parameter).

Cymbalcloeon gen. nov., an incredible new mayfly genus (Ephemeroptera: Baetidae) from Thailand.

The genus Cymbalcloeon gen. nov. (Ephemeroptera: Baetidae) is established for a new species Cymbalcloeon sartorii sp.

Reports of Baetidae (Ephemeroptera) species from Tafna Basin, Algeria and biogeographic affinities revealed by DNA barcoding.

Background: The Mediterranean basin is known to be the cradle of many endemic species. Within mayflies (Insecta, Ephemeroptera), North African species belonging to the family Baetidae remain poorly known and, traditionally, affinities to European fauna were proposed. Recent studies, based on molecular reconstructions, showed closer relationships to Mediterranean islands fauna.

Novikova & Kluge in Borneo (Ephemeroptera, Baetidae).

Material collected between 2000 and 2014 on the island Borneo, including the Indonesian province of Kalimantan, the Malaysian province of Sabah and Brunei Darussalam, substantially increased our knowledge of on this island. The total number of species in Borneo increased to five, as only one species, (Müller-Liebenau, 1984), was previously reported. Three new species were identified by morphology and partly by using genetic distance (COI, Kimura 2-parameter).

The tremendous diversity of Novikova & Kluge in Indonesia (Ephemeroptera, Baetidae).

Material collected between 2010 and 2014 on the Indonesian islands of Sumatra, Bali, Sumba, Sumbawa, Sulawesi, and Seram unveiled the enormous diversity of Novikova & Kluge in this country. Five species were reported from Indonesia previously ( (Ulmer), (Ulmer), (Müller-Liebenau), (Müller-Liebenau), and (Ulmer)); all were described from adults only and no species were previously known at larval stage. We identified 18 new species by integrative taxonomy using genetic distance (COI, Kimura-2-parameter) and morphology, and they are described and illustrated based on their larvae.

First checklist of mayflies (Insecta, Ephemeroptera) from Kosovo.

This research provides the first systematic contribution to the mayfly (Ephemeroptera) Fauna of Kosovo. This investigation was conducted from March to November in 2017 and 2018; 32 sites were sampled covering the different freshwater ecosystems of the country. The first checklist of mayflies of Kosovo is provided.