Abstract
The Lecane-species complex taxonomy the world over, witnessed a state of flux, causing confusion and controversies, among world taxonomists over the treatment of various subgenera, taxa and sub and or infraspecific categories of the species rich genus Lecane Nitzsch 1827, on the basis of structure/shape of key, morphological features like foot/toes, lorica, etc. The taxonomic scenario in India, relying heavily on the classical, divergent taxonomic approaches presented a picture of more chaos/confusion, following poor accessibility to contemporary revisionary studies until the recent past. Despite revisionary studies across the world, a few notable Indian studies continued to be burdened with old nomenclature. This short communication reports for the first time ever, 33 valid species of lecanid rotifers (Lecanidae), including six new distributional records from Greater Hyderabad region and the entire state of Andhra Pradesh too with comments on their current nomenclature. Further, limnobiological correlation between five physicochemical parameters and rotifer associations revealed, L. bulla, L. closterocerca, L. hamata, L. ludwigi, L. luna and L. papuana as euryokous species, showing tolerance to a wide range of abiotic factors and habitats too.
Highlights
The Lecane-species complex taxonomy the world over, witnessed a state of flux, causing confusion and controversies, among world’s taxonomists over the treatment of various subgenera, taxa and sub and or infraspecific categories of the species rich genus Lecane Nitzsch 1827, on the basis of structure/shape of key, morphological features like foot/toes, lorica, etc
The taxonomy of ubiquitous, biogeographically significant Lecane species-complex was in a state of flux for decades, and a major irritant to taxonomists world wide, following differences, until the mid nineties; Segers (1995) setting to rest all prevailing confusions/ controversies, assigning all species under a single genus Lecane Nitzsch, 1827
The Indian scenario on lecanid taxonomy was no different and the confusion continued to prevail until the beginning of the century, ironically enough for lack of accessibility to standard world revisionary studies/literature and serious comprehensive Indian studies on the groups, despite its abundance and distinct tropical characteristics (Sharma 1996)
Summary
The Lecane-species complex taxonomy the world over, witnessed a state of flux, causing confusion and controversies, among world’s taxonomists over the treatment of various subgenera, taxa and sub and or infraspecific categories of the species rich genus Lecane Nitzsch 1827, on the basis of structure/shape of key, morphological features like foot/toes, lorica, etc. Notable pioneering taxonomic studies on lecanid rotifer from Andhra Pradesh were initiated by Dhanapathi (1976a) recording two new species, Lecane bidentata and L. donnerianus, including five first distribution reports.
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