During the Global Biodiversity Survey “Santo 2006” conducted in Espiritu Santo, Vanuatu, mayfl y larvae were collected in several streams of the island. This contribution deals with the larvae of Baetidae (Insecta: Ephemeroptera) that are represented by two species: Labiobaetis paradisus n. sp. and Cloeon sp. The presence of these two genera is not surprising as they both possess almost a world...

We report new data about mayfly diversity from a 85 km area in East Kalimantan (Borneo, Indonesia). More than 40 mayfly genera have been collected in a lowland Dipterocarpaceae forest. They belong to the following families (by decreasing diversity order): Baetidae (12), Leptophlebiidae (7), Caenidae (6), Heptageniidae (5), Ephemerellidae (2), Potamanthidae (2), Teloganodidae (2), Isonychiidae (...

In this study, we evaluated the toxicity effectiveness of berries crude extract of Endod [vernacular name (local native language, Amharic); Phytolacca dodecandra] against aquatic macroinvertebrates Baetidae (Mayflies) and Hydropsychidae (Caddisflies), under laboratory conditions. In Ethiopia, toxic plant, berries of Phytolacca dodecandra are being commonly used for washing clothes and to contro...

A detailed description of the larvae of Baetis (Baetis) cypronyx sp. n., a representative of the Baetis alpinus species-group within the mayfly family Baetidae, is provided, including a differential diagnosis with regard to closely related species of the group, especially Baetis melanonyx (Pictet, 1843) and Baetis baroukianus Thomas & Dia, 1984. The new species is mainly distinguished by mouthp...

The Ephemeroptera family Baetidae is one of the most specious families in the Neotropical region and a great effort to improve the taxonomy of this group has been made over the last 10 years in South America. Such studies now enable the development of biomonitoring tools at species-level in the region. A total of 2,199 baetids were collected from seven sampling sites, collected three times (aut...

In the present work, an atypical new species of Paracloeodes Day (Ephemeroptera: Baetidae) is described based on nymphs collected in the Caldas Department, Central Cordillera of Colombia. This represents the first report of the genus from Colombia. The main characteristics that distinguish the new species from congeners are: abundant setae on femora, antennae length twice the width of the head ...

A new genus of Baetidae, Megalabiops gen. nov. , and a species, M. madagasikara sp. are described from Madagascar based on nymphs. The is characterized by having strongly enlarged mentum; pedicelli with many long, stout, pointed setae; brush dense, short setae between prostheca mola both mandibles; an apically maxillary palp stout seta at the tip; labium simple ventrally glossae. patellotibial ...

The types of the remaining two South American species classified in Moribaetis Waltz & McCafferty, 1985 were studied. Moribaetis comes (Navás, 1912) is designated as a nomen dubium based on the lack of information in the original description, the damaged type and the resultant improbability of assigning specimens to this species. The type-material of M. aneto (Traver, 1971), on the other hand, ...

A new, two-winged species Procloeon monilistylus sp. n. is described from the Russian Far East based on male and female imagoes reared from larvae. The larva differs from other species of Procloeon by having a deeply separated incisor and kinetodontium of the mandibles. The imago differs from all Baetidae (and mayflies in general) by the shape of the gonostyli. Formerly this species was known a...