A new species of Nigrobaetis Novikova & Kluge, 1987 (Ephemeroptera, Baetidae) from Tamil Nadu, India

Abstract

Nigrobaetis klugei sp. nov. is described based on nymphs from the Sastha falls of Western Ghats, Southern India. The nymph of Nigrobaetis klugei sp. nov. can be distinguished from other Oriental species of Nigrobaetis by the following combination of characters: (i) dorsal surface of the labrum with 1+3 long simple stout setae on the distal half; (ii) paraproct distally not expanded, with a reduced number of spines on distal margin (three large and two small spines); (iii) paraglossae slender, approximately as wide as glossae; (iv) absence of medioproximal spots in the abdominal tergites and (v) long and pointed triangular spines at the distal margin of abdominal tergites.

Two new species of the genus Nigrobaetis Kazlauskas (in Novikova & Kluge), 1987 (Ephemeroptera: Baetidae) from Southwest China

“…The members of Nigrobaetis s. str. usually possess a restricted number of marginal spines on paraproct (ranging from 4-16 spines), which is an unique character within the Alainites/Nigrobaetis/Takobia complex (Figs 23,71, Müller-Liebenau 1984, Novikova & Kluge 1987, Kang et al 1994, Lugo-Ortiz & de Moor 2000, Gattolliat 2004, Gattolliat & Sartori 2008, Gattolliat et al 2012, Kluge & Novikova 2014, Kubendran et al 2015, Martynov & Godunko 2017, Godunko et al 2018, Sroka et al 2021, Sivaruban et al 2022. There are exceptions, however, apart from the new species and N. gombaki above mentioned, N. rhithralis (Soldán & Thomas, 1983) and N. digitatus (Bengtsson, 1912) also have 28-35 and 17-28 spines respectively on inner margin of paraproct (Godunko et al 2018).…”

“…Currently, Nigrobaetis s. str. comprises 28 species in the world, three species in Europe (Müller-Liebenau 1969, Novikova & Kluge 1994, Kluge 2004, Godunko et al 2018, seven species in Africa (Soldán 1977, Soldán & Thomas 1983, Lugo-Ortiz & de Moor 2000, Gattolliat 2004, Kaltenbach et al 2021) and 18 species are recognized in Asia (Müller-Liebenau 1984, 1985, Kang et al 1994, Kang & Yang 1996, Gattolliat & Sartori 2008, Gattolliat et al 2012, Fujitani et al 2003, Fujitani et al 2017, Kubendran et al 2015, Sivaruban et al 2022. The objective here is to describe two new species of Nigrobaetis newly discovered from Yunnan, Guizhou and Sichuan provinces during the surveys of the mayfly fauna of Southwest China that is currently under way.…”

Diversity and abundance of mayflies (Insecta: Ephemeroptera) in Achenkovil River, southern Western Ghats, Kerala, India

“…The Ephemeroptera of India was represented by four suborders, 15 families, 59 genera, and 172 species (Sivaramakrishnan et al 2020) and the Western Ghats of India alone comprises 13 families, 42 genera and 82 species (Sivaramakrishnan et al 2020). After 2020, more than 60 new species of mayflies were described in India by various researchers (Balasubramanian & Muthukatturaja 2021;Martynov et al 2021;Srinivasan et al 2022;Kluge et al 2022;Muthukatturaja & Balasubramanian 2022;Sivaruban et al 2022;Vasanth et al 2023).…”

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

“…From the Oriental region, Nigrobaetis species were described from continental Southeast Asia ( Müller-Liebenau 1984 ), from Taiwan ( Müller-Liebenau 1985 ; Kang et al 1994 ; Kang and Yang 1996 ), and from India ( Kubendran et al 2015 ; Sivaruban et al 2022 ). The important diversity reported from Taiwan (six species), points into the direction that we may expect many more species in other parts of the generally species-rich Southeast Asia.…”