Abstract
A new species of mayfly (Heptageniidae: Ecdyonurinae) Afronurus meenmutti sp. nov. is described based on larvae and imagoes from the state of Kerala, southern India. The main characteristics that distinguish the new species from all other species are in having glossae oblong with two stout spines medially; lingua of hypopharynx deeply cleft; absence of postero-lateral spines on terga and gill I slightly lobate in the nymph. Hind wing with the acute costal process; stout spine dispersed on basal and surface of forceps in the adults.
Highlights
The description of the mayfly genus Afronurus was illustrated by Lestage (1924) from Africa. Kimmins (1937) proposed the name Cinygmina for a single species known from India based on adults only with penes differentiation. Wang & McCafferty (2004) and Kluge (2004) were synonymised the genus Cinygmina with Afronurus (Braasch & Freitag 2008)
The imagoes of Afronurus meenmutti sp. nov. can be separated from all other species by the following combination of characters: (i) hind wing with acute costal process; (ii) outer lobe of penis much broader and slightly elevated; (iii) stout spines on forceps
A. kumbakkaraiensis and A. meenmutti sp. nov. have all life stages described, whereas A. assamensis, A. curtus, and A. solangensis are known from adults and only the larvae of A. keralensis has been described
Summary
The description of the mayfly genus Afronurus was illustrated by Lestage (1924) from Africa. Kimmins (1937) proposed the name Cinygmina for a single species known from India based on adults only with penes differentiation. Wang & McCafferty (2004) and Kluge (2004) were synonymised the genus Cinygmina with Afronurus (Braasch & Freitag 2008). In India, five species of Afronurus have been recorded namely A. assamensis Kimmins, 1937, A. curtus Dubey, 1971, A. solangensis Dubey, 1971, A. keralensis Braasch & Soldan, 1987, and A. kumbakkaraiensis Venkataraman & Sivaramakrishnan, 1987. We describe a new species, Afronurus meenmutti, based on all life stages, from southern India.
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