Is the genus Potamophylax (Trichoptera: Limnephilidae) highly polymorphic?
|Klíčová slova||Trichoptera, Potamophylax, polymorphism, polyphenism|
|Citace||OLÁH, János. Is the genus Potamophylax (Trichoptera: Limnephilidae) highly polymorphic?. Acta Entomologica Musei Nationalis Pragae. Prague: National Museum, 2017, 57(1), 253-257. DOI: https://doi.org/10.1515/aemnp-2017-0072. ISSN 0374-1036 (print) 1804-6487 (online). Also available from: https://publikace.nm.cz/periodicals/aemnp/57-1/is-the-genus-potamophylax-trichoptera-limnephilidae-highly-polymorphic|
The present deprived state of taxonomy gives no appropriate resources for taxonomists to apply more sophisticated phenomic tools and to carry out more appropriate population sampling. Without fine structure analysis of large population samples there is no hope to discover speciation traits and there is no chance to delineate young incipient sibling species with subtle but stable shape divergences. Phylogenetic species complexes of these incipient species are frequently mistaken with species polymorphism. However, historical polymorphism is a sympatric phenomenon based on discontinuous variation inside a panmictic population and not between geographically isolated populations. I continue to consider Potamophylax mista (Navas, 1918) a valid species following the evidence given by Oláh et al. (2013).