Revision of the Afrotropical genus Susua Lugo-Ortiz McCafferty 1998 (Ephemeroptera: Baetidae: Protopatellata).

The species originally described as Cheleocloeon sigiensis Gillies 2001 is moved to the genus Susua Lugo-Ortiz McCafferty 1998. Additional descriptions of Susua sigiensis (Gillies 2001) are given based on male and female imagoes reared from larvae from several localities in Tanzania (including the type locality in the Upper Sigi Basin). Susua niandanensis (Wuillot in Wuillot Gillies 1993) is redescribed based on larvae and male imagoes from Guinea, Mali, Côte d'Ivoire and Zambia. The genus Susua belongs to the plesiomorphon Protopatellata Kluge Novikova 2011 and has an Afrotropical distribution; Susua is closely related to Crassabwa Lugo-Ortiz McCafferty 1996. General characteristics of Susua are given based on the two known species.

Revision of Ephemerythus Gillies 1960 (Ephemeroptera: Tricorythidae).

Four species of Ephemerythus Gillies 1960 are described here. Larvae, subimagoes, imagoes of both sexes and eggs of Ephemerythus niger Gillies 1960 (= E. niger ugandanus Kluge 2010 syn. n.) and Ephemerythus pictus Gillies 1960 (= E. kiboensis Gillies 1960 syn. n.) are redescribed based on reared material from their type localities (Amani in Usambara Mountains and Marangu in Kilimandjaro respectively) and from other places in Tanzania. Larvae, subimagoes, imagoes of both sexes and eggs of a new species Ephemerythus nigricolor sp. n. are described based on reared material from Zambia. The species formerly reported as «Ephemerythus sp. C¼ (Kluge 2010a) is described here as Ephemerythus gilliesi sp. n., based on one larva with eggs, collected by M.T. Gillies in Cameroon.

New tribe Labiobaetini tribus n., redefinition of Pseudopannota Waltz & McCafferty 1987 and descriptions of new and little known species from Zambia and Uganda.

A new tribe Labiobaetini tribus n. is established for a plesiomorphon Labiobaetis Novikova & Kluge 1987 and a holophyletic taxon Pseudopannota Waltz & McCafferty 1987. New synonymy Pseudopannota Waltz & McCafferty 1987 = Ophelmatostoma Waltz & McCafferty 1987, syn. n. is proposed. A new species Pseudopannota pannota sp. n. closely related to P. berthrandi (Demoulin 1967) is described from Zambia based on imagoes of both sexes reared from larvae. Pseudopannota camerunense (Ulmer 1920) comb. n. is redescribed from Zambia based on imagoes of both sexes reared from larvae. A new species Pseudopannota fusca sp. n. is described from Uganda based on larvae and subimagoes of both sexes extracted from mature larvae. Pseudopannota maculosa (Crass 1947) is reported from Zambia based on larvae. Labiobaetis tenuicrinitus (Kopelke 1980) comb. n. (= Baetis spatulatus Gillies 1994 syn. n.) is redescribed from Uganda based on imagoes of both sexes reared from larvae.

Systematics of Indobaetis Müller-Liebenau & Morihara 1982, and related implications for some other Baetidae genera (Ephemeroptera).

Imagoes, subimagoes and eggs of Indobaetis costai Müller-Liebenau & Morihara 1982 are described for the first time; additional larval characters of I. costai and I. starmuehlneri Müller-Liebenau & Morihara 1982 are reported. A new species Indobaetis microfolius sp.n. is described based on larvae, a male subimago reared from larva and a female subimago extracted from a mature larva. Baetis michaelohubbardi (Selva-kumar et al. 2012) comb.n. is proposed for a species originally attributed to Indobaetis, based on the presence of hind protoptera, three maxillary dentisetae and other characteristics. Newly discovered diversity within the holophyletic taxon Indobaetis disproves a formerly erected idea about the close relationship of Indobaetis and the muticus-group. Thus, the senior genus-group name for the holophylum including the muticus-group is Takobia/g1; in rank-based nomenclature the names Alainites Waltz & McCafferty (in Waltz et al.) 1994 and Acerbaetis Kang & Yang (in Kang et al.) 1994 should be junior synonyms of Takobia Novikova & Kluge 1987 (new synonymy). The Neotropical taxon Caribaetis Kluge 1992 is accepted as genus (stat.n.), rather than a synonym of Fallceon, based on the original diagnosis of the subgenus Caribaetis and taking into account the significance of such character as presence of a posterior seta on the claw, shared with Indobaetis, Baetodes and some other taxa; resultant new combinations are proposed: Caribaetis planifrons (Kluge 1992) comb.n., Caribaetis alcarrazae (Kluge 1992) comb.n. and Caribaetis grandis (Gonzalez-Lazo & Salles 2007) comb.n. A new species synonymy in Fallceon is proposed, based on the presence of a hind wing costal hook in both species: Fallceon poeyi (Eaton 1995) = F. nikitai McCafferty & Lugo-Ortiz 1994 syn.n.

A new species, Procloeon monilistylus sp. n. (Ephemeroptera, Baetidae), from the Russian Far East.

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 as "Cloeon (Centroptilum) sp. 1" sensu Kluge & Novikova 1992.