Michel Sartori

• PhD
• Research Associate at Naturéum, Department of zoology

Different reproductive modes are characterized by costs and benefits that depend on ecological contexts. For example, sex can provide benefits under complex biotic interactions, while its costs increase under mate limitation. Furthermore, ecological contexts often vary along abiotic gradients. Here, we study how these factors simultaneously influen...

A new species belonging to the genus Habrophlebia Eaton, 1881 is described at the nymphal stage from the Rif Mountains of Morocco. This species presents unique features , such as the chorionic arrangement of the egg and the ornamentation of the posterior margin of abdominal tergites. It is compared to all west European Habrophlebia species and a ta...

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 bioass...

Two new species from Grande Terre Island, New Caledonia, namely Fasciamirus petersorum sp. nov. and Simulacala rara sp. nov. are described based on larval morphology and molecular data (COI sequences). Fasciamirus petersorum sp. nov. is distributed in the southern part of the island and is characterised by a reduced third segment of the labial palp...

The effects of deforestation on species richness and abundance of tropical freshwater organisms are increasingly well documented, but corresponding effects on functional properties of ecosystems, such as productivity and growth, are largely unknown. Here we investigated the biomass production and growth of eight species of mayflies (Ephemeroptera)...

Despite its biogeographical importance and high endemism, the freshwater biodiversity in Algeria and the wider arid region of North Africa has been significantly under‐researched and underestimated. Mayflies (Ephemeroptera) are crucial for the maintenance of ecological integrity of hydrosystems and could serve as indicators of changes of North Afri...

the hitherto unknown larva of Setodes acutus Navás 1936 from the Aures region, Algeria, is described. the diagnostic features of the species are explained and illustrated, and morphological comparisons are made with Setodes argentipunctellus Mclachlan 1877, recently recorded from the region. In addition, a discriminatory matrix to the known Setodes...

Identification and Ecology of Freshwater Arthropods in the Mediterranean Basin covers the entire Mediterranean basin, including parts of Europe, Asia, Africa and the Mediterranean islands, but excluding other biogeographic locations with Mediterranean climates located outside the region. The book provides an extensive description of the taxonomy an...

The genus Afronurus in Thailand is investigated using an integrative approach (morphology based, ootaxonomy and molecular data) for species delimitation. A total of four species of Afronurus was identified; A. cervina (Braasch & Soldán, 1984), A. gilliesiana (Braasch, 1990), A. rainulfiana (Braasch, 1990), and A. rubromaculata (You et al., 1981). T...

A new mayfly species, Potamanthellus panayensis sp. n. (Neoephemeridae) is described from Panay Island, Philippines, based on nymphs. Supplementary nymphal description of P. caenoides (Ulmer, 1939) and a provisional description of another Potamanthellus species from Mindanao Island, Philippines are provided. The potential underestimated diversity o...

A new species of ephemerellid mayfly, Cincticostella ebura sp. nov. , is described based on larvae collected in a stream from Nan Province, Thailand. This new species is classified in the nigra complex of the genus Cincticostella based on morphological and COI phylogeny evidence. The new species is closely related to C. nigra (Uéno, 1928) and C. fu...

Ecdyonurus aurasius sp. nov. , a micro-endemic species reported from several streams within the Aurès Mountains (north-eastern Algeria), is described and illustrated at nymphal, subimaginal and imaginal stages of both sexes. Critical morphological diagnostic characters distinguishing the new species are presented, together with molecular affinities...

We describe a new species of Prosopistoma collected in the High Atlas Mountains of Morocco. Prosopistoma maroccanum sp. nov. appears to be morphologically more similar to the European highly endangered P. pennigerum (Müller, 1785) than to the other Maghrebian species, P. alaini Bojkova & Soldán, 2015. A gene tree including the few available barcode...

Two new species of Dudgeodes Sartori, 2008 and a new species of Teloganodes Eaton, 1882 are described from India; they are Dudgeodes selvakumari Martynov & Palatov, sp. nov. from Himalayan region (Uttarakhand), Dudgeodes molinerii Sivaruban, Martynov, Srinivasan, Barathy & Isack, sp. nov. , and Teloganodes barathyae Sivaruban, Martynov, Srinivasan...

Recent research in various Moroccan areas allowed an update and a revision of the Moroccan Ephemeroptera checklist. In this case, 54 species are now listed, belonging to 10 families and 26 genera. The distribution of all studied species is discussed, as well as their biogeographical affinities. Moroccan Mayflies are characterized by a clear dominan...

The caddisfly fauna of Algeria is far from complete. In this study, we present data from Trichoptera sampling in northwestern Algeria (Tafna and Ghazouana River basins) during 2014–2019, enhancing knowledge of this group in the country. We were able to identify 30 species and 17 genera in the study area. Among the listed taxa, five species (Hydropt...

Here, I report a new species of the genus Neohagenulus Traver, 1938 from the Dominican Republic. The genus was believed to be endemic to Puerto Rico until now. Neohagenulus hodeceki sp. nov. is described at the nymphal stage. Some discussion on the tribe Hagenulini is also provided.

The aim of this study is to review the family Behningiidae and Potamanthidae in Thailand. Two genera and three species of Behningiidae are recognised: Protobehningia merga Peters & Gillies, 1991, Behningia baei McCafferty & Jacobus, 2006, and Behningia nujiangensis Zhou & Bisset, 2019, which is newly reported from Thailand. The egg structure of B....

Despite being recorded in Algeria since the nineteenth century, the genus Rhithrogena has never been the object of a taxonomical study and no identified species is known from this country. Investigations of the relict mountain streams of El Kala, north-eastern Algeria, have led to the discovery of a Rhithrogena population. Morphological and molecul...

• Data on Maghrebian mayfly communities are scarce and fragmentary, but evidence of alterations of the North African riverine landscape depleting the freshwater biota is rapidly mounting. • In contrast to the overexploited lowlands, the highlands of north-eastern Algeria are hotspots of freshwater biodiversity and the last refugia to micro-endemics...

Different reproductive modes are characterized by costs and benefits which often depend on ecological contexts. Benefits of sex are expected to increase under complex biotic interactions, whereas parthenogenesis can be beneficial for reproductive assurance when females are mate limited. Here, we study how different ecological contexts influence the...

Material collected just behind the Cenderawasih University campus in Jayapura, Papua Province, Indonesia, revealed a new species of the Labiobaetis claudiae group, which is here described and illustrated based on larvae, subimago, male and female imagos. The total number of Labiobaetis species on the island New Guinea increased to 33, the total num...

The twentieth anniversary of the first issue of Zootaxa (De Moraes & Freire, 2001) provides an appropriate opportunity to reflect on some trends in global Ephemeroptera taxonomy publishing over the last two decades, with a focus on the description of new species and the outsized role of the journals Zootaxa and ZooKeys, in particular. Detailed revi...

A new species of Heptageniidae, Paegniodes sapanensis sp. nov. , is described based on larvae, subimagos, eggs, and COI data. The mayfly genus Paegniodes Eaton, 1881 is reported for the first time from Thailand. The larva of the new species can be distinguished from other known Paegniodes species by i) lamellae of gill I ca 1/4 of fibrilliform port...

Knowledge of the basic life history traits of an aquatic organism such as voltinism and growth patterns is a fundamental step in understanding its potential use as indicator taxon and how it adapts to its complex environment. The distribution and life cycle of the Maghrebian endemic Choroterpes atlas Soldán & Thomas, 1983 was studied over a two yea...

In contrast to neighbouring Maghrebian countries and despite recent progress, knowledge of the Ephemeroptera of Algeria remains fragmentary. As part of an ongoing survey of the Ephemeroptera of Algeria, we investigated the mayfly fauna of Wadi Cherf, a major tributary of the Seybouse River, northeastern Algeria, and present an updated checklist and...

The main purpose of our paper is to document genus Hydropsyche (Trichoptera: Hydropsychidae) in northwestern Algeria and to provide the larval descriptions of the species set. Larvae, pupae, and imagines were collected from 14 sampling sites over a five-year period (2014–2019). Eight Hydropsyche species have been identified, with Hydropsyche siltal...

The distinction between the two closely related genera Oligoneuriella Ulmer, 1924 and Oligoneuriopsis Crass, 1947 has been much debated. First described from South Africa, Oligoneuriopsis seemed to be a clearly defined genus. However, as the known distribution of the genus widened and knowledge on it expanded , species delimitation based on morphol...

Here we revise the entire Ephemeroptera collection of F.-J. Pictet deposited in the Natural History Museum of Geneva (MHNG) and voucher specimens housed in the Natural History Museum of Vienna (NMW). Due to several unforeseen turns of events, the MHNG collection was already in bad condition at the end of the 19th century. However, the specimens sen...

Studying alternative forms of reproduction in natural populations is of fundamental importance for understanding the costs and benefits of sex. Mayflies are one of the few animal groups where sexual reproduction co-occurs with different types of parthenogenesis, providing ideal conditions for identifying benefits of sex in natural populations. Here...

Simple Summary: The monogeneric family Vietnamellidae is endemic in the Oriental region and found only in the Indomalayan biogeographic realm. Seven nominal species have previously been described, but three are considered to be junior synonyms. However, some provisional species designations have been established. In this study we described formally...

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 Mediterrane...

We describe a new species of Habrophlebia , H. djurdjurensis sp. nov. , based on nymphal, imaginal, and egg stages obtained by sampling from the Great Kabylia watershed, north-central Algeria. The new species was previously identified as H. cf. fusca by Lounaci et al. 2000. Habrophlebia djurdjurensis is in fact more related to H. vaillantorum Thoma...

Within the damselfly subfamily Platycnemidinae, eight species are currently recognized in South-East Asia. The final stadium larvae of only three of them have been so far described. The final stadium larva of Copera chantaburii is described and illustrated for the first time, based on reared specimens, and new provincial records both of larvae and...

Cincticostella tornata , a new species of Ephemerellidae, is described from China. It belongs to the insolta -species group and is closely related to C. femorata . It is hitherto only known from its type locality in central China, more than 1000 km northern to the known distribution of C. femorata . In addition, the COI barcode of the new species i...

Stylogomphus thongphaphumensis sp. nov. is described from a type series of specimens reared from larvae (holotype ♂, Huai Khayeng, Thong Pha Phum district, Kanchanaburi Province; 14°36′20″N 98°34′38″E, 206 m a.s.l., larva collected on 14.XII.2014; adult emerged on 30.IV.2015). All larvae were collected from the same locality in western Thailand. De...

Cloeon perkinsi was described from South Africa in 1932 by Barnard. Despite being relatively common in Africa, it was mentioned in the literature quite rarely, and its known distribution to date includes most of sub-Saharan Africa. Material collected recently in Ethiopia, Israel, Saudi Arabia, and Yemen extends its distribution in East Africa, Arab...

We here list four unreported mayfly species from Israel and the Palestinian Authority: Cloeon vanharteni Gattolliat & Sartori, 2008, Cheleocloeon soldani Gattolliat & Sartori, 2008, Oligoneuriella orontensis Koch, 1980 and Prosopistoma oronti Alouf, 1977. They are reported, morphologically distinguished from other local relatives, and sequenced for...

We here treat four unreported or poorly known mayfly species from Jordan: Cheleocloeon soldani Gattolliat & Sar-tori, 2008, Cloeon vanharteni Gattolliat & Sartori, 2008, Baetis pacis Yanai & Gattolliat, 2018, and Caenis macruraStephens, 1835. They are reported and morphologically distinguished from other local relatives. Caenis macrura is widely di...

COI sequences were used as an initial clustering method to delimit putative species of the genus Dudgeodes in the Philippines. An overview of the diagnostic characters of Philippine species and characters with high intraspecific variability are given. Six new species of Dudgeodes are described and illustrated: D. bauernfeindi Garces & Sartori, sp....

Larvae of the Notacanthella Jacobus & McCafferty, 2008 species N. commodema (Allen, 1971) and N. quadrata (Kluge & Zhou, 2004) from Thailand are compared and redescribed. Both species have serrations on maxillary canines, as does N. perculta (Allen, 1971) from Vietnam, and this contributes to synonymizing the subgenus Samiocca Jacobus & McCafferty,...

The genus Vietnamella Tshernova, 1972 is investigated in detail for the first time in Thailand. As a consequence, four species are recognized, namely Vietnamella maculosasp. nov. , Vietnamella thani Tshernova, 1972, Vietnamella sp. B and Vietnamella sp. C. Herein, larvae and eggs of V. maculosasp. nov. are described and reported from Chiang Rai Pro...

Thirty years after the first Ephemeroptera checklist (excluding Baetidae) of the Tafna basin (North-west Algeria) involved in an ecological study, new sampling investigations in 12 of the 48 sites prospected allowed us to record 12 taxa including six Baetidae taxa. The aim of the present study is to analyze and discuss the current diversity and dis...

Studying alternative forms of reproduction in natural populations is of fundamental importance for understanding the costs and benefits of sex. Mayflies are one of the few animal groups where sexual reproduction co-occurs with different types of parthenogenesis, providing ideal conditions for identifying benefits of sex in natural populations. Here...

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. During this survey, we found 48 sp...

Understanding processes that have driven the extraordinary high level of biodiversity in the tropics is a long-standing question in biology. Here we try to assess whether the large lineage richness found in a New Guinean clade of mayflies (Ephemeroptera), namely the Thraulus group (Leptophlebiidae) could be associated with the recent orogenic proce...

A comprehensive revision of the genus Thalerosphyrus in Thailand is assessed. Four species are recognised: T. flowersi, T. sinuosus, T. vietnamensis and one new species, Thalerosphyrus thailandensis sp. nov., which is described here. A morphological comparison of the described species is provided. A Maximum Likelihood (ML) consensus tree based on 6...

This work is intended as a general and concise overview of Ephemeroptera biology, diversity, and services provided to humans and other parts of our global array of freshwater and terrestrial ecosystems. The Ephemeroptera, or mayflies, are a small but diverse order of amphinotic insects associated with liquid freshwater worldwide. They are nearly co...

Greater than 80% of species on Earth are awaiting formal description, and simultaneously, many of these species unknown to science are becoming extinct. Here we highlight the importance and benefits of collaborating and working in interdisciplinary research groups, to improve quality and efficiency of both ecological and taxonomic research. The aim...

Three species of the genus Prosopistoma Latreille, 1833 (Prosopistomatidae) are currently reported from Thailand. A new species, Prosopistomacarinatumsp. n. , is described here based on specimens from western and southern Thailand. The new species can be easily distinguished from the other members of Prosopistoma by the following combination of cha...

Baetis (Rhodobaetis) canariensis s.l. was considered to be the most common species of mayfly (Ephemeroptera) in running waters of the Canary Islands. Recent studies using mitochondrial genetic markers suggested that what was considered a single species was in fact composed of four closely related, but distinct species. Here we present the results o...

Baetis (Rhodobaetis) canariensis s.l. was considered to be the most common species of mayfly (Ephemeroptera) in running waters of the Canary Islands. Recent studies using mitochondrial genetic markers suggested that what was considered a single species was in fact composed of four closely related, but distinct species. Here we present the results o...

The Convention on Biological Diversity (CBD) commits its 196 nation parties to conserve biological diversity, use its components sustainably, and share fairly and equitably the benefits from the utilization of genetic resources. The last of these objectives was further codified in the Convention's Nagoya Protocol (NP), which came into effect in 201...

We present here a new species of Habrophlebia, H. hassainae sp. nov., described at nymphal, imaginal and egg stages obtained by rearing from the Tafna watershed, North western Algeria. The new species was previously identified as H. cf. fusca by Gagneur & Thomas (1988). H. hassainae is in fact more related to H. lauta McLachlan, 1884, but can be se...

Research examining mayfly ecology in karst streams and rivers has increased in recent years, though microhabitat preferences remain poorly characterized. We examined mayfly assemblage taxonomy, functional feeding groups and microhabitat preferences in two contrasting lotic Dinaric karst catchments, one pristine and one anthropogenically impacted. A...

This study investigated the phylogenetic relationships among seven burrowing mayfly families. Genetic data from four ribosomal DNA genes (12S, 16S, 18S and 28S) generated with Sanger sequencing, 448 protein‐coding loci generated using a novel hybrid enrichment probe set and available RNAseq and genome assembly for 19 ingroup taxa and four outgroup...

A new species belonging to the speciose genus Electrogena Zurwerra & Tomka, 1985 is described based on all stages from material collected in Switzerland, northern Italy and Slovenia. Electrogena brulini Wagner sp. nov. is closely related to E. gridellii (Grandi, 1953). A genetic analysis based on the mitochondrial gene CO1, including 9 specimens fr...

Tropical mountains are usually characterized by a vertically-arranged sequence of ecological belts, which, in contrast to temperate habitats, have remained relatively stable in space across the Quaternary. Such long-lasting patterning of habitats makes them ideal to test the role of environmental pressure in driving ecological and evolutionary proc...

Mayfly emergence was studied in the Plitvice Lakes National Park (Croatia) monthly over a 2-year period in four habitats (springs, streams, mountainous rivers, tufa barriers) using monthly collections of emergence traps. A total of 12 mayfly taxa were recorded. Almost half of the collected specimens belonged to the genus Baetis Leach, 1815, which w...

Remarkably, unlike other parts of Europe, the ecology of mayflies in the southeastern regions is still poorly known. Here we present the first comprehensive study of Ephemeroptera in the tufa-depositing habitats of the Dinaric Karst. The study was conducted in Plitvice Lakes National Park monthly during a one-year period (2007–2008) in different ty...

Mayfly ecological traits are studied in relation to diverse type of habitats.

Heptageniidae is a species-rich mayfly family (Ephemeroptera), whose taxonomy and phylogeny have been based almost exclusively on traditional morphological studies. Inconsistent use of diagnostic characters and the general lack of molecular studies have led to vague generic concepts, and the phylogenetic relationships among taxa in the family remai...

The use of non-invasive techniques to study a wide array of zoological specimens has been increasing considerably during the 21 st century. Among these techniques, micro-computed X-ray tomography (µ-CT) is gaining much attention. This method may allow access to hardly visible and internal structures of valuable specimens (e.g. type specimens) throu...

The Swiss Barcode of Life initiative (SwissBOL) aims to inventory the genetic biodiversity in Switzerland using a short DNA sequence. DNA barcoding provides an additional tool for species identification that complements traditional morphological approaches. We report on the establishment of a DNA barcode library for Plecoptera, taxa that are of gre...

The study of processes driving diversification requires a fully sampled and well resolved phylogeny, although a lack of phylogenetic markers remains a limitation for many non-model groups. Multilocus approaches to the study of recent diversification provide a powerful means to study the evolutionary process, but their application remains restricted...

The study of processes driving diversification requires a fully sampled and well resolved phylogeny. Multilocus approaches to the study of recent diversification provide a powerful means to study the evolutionary process, but their application remains restricted because multiple unlinked loci with suitable variation for phylogenetic or coalescent a...