Reproductive isolation is the defining characteristic of a biological species, and a common,
but often untested prediction is a positive correlation between reproductive isolation and …

Flight has conferred an extraordinary advantage to some groups of animals. Wing shape is
directly related to flight performance and evolves in response to multiple selective pressures …

Males of some territorial calopterygid damselflies show an elaborate courtship display that
involves high-frequency wing-beats directed toward an incoming female. Although it has …

Background Wing size and shape have important aerodynamic implications on flight
performance. We explored how wing size was related to wing shape in territorial males of 37 …

Background Studying contemporary hybridization increases our understanding of
introgression, adaptation and, ultimately, speciation. The sister species Ischnura elegans …

Two Cordulegaster dragonflies present in Italy, the Palaearctic and northern distributed
Cordulegaster boltonii and the endemic to the south of the peninsula Cordulegaster …

Females are often considered responsible for hybridization between two species because
usually they are the choosier sex and their cooperation is needed for successful copulation …

Dragonflies are colorful diurnal insects with large compound eyes. Because they visually
recognize conspecific and heterospecific individuals, their body color plays essential roles in …

To infer the differentiation of Japanese Davidius dragonflies, we investigated the
genealogies of the mitochondrial cytochrome oxidase subunit I gene (COI) and the nuclear …

Mnais costalis and M. pruinosa are damselflies (Odonata: Calopterygidae) with low
dispersal abilities, both during their aquatic stream-living immature stage and their flying …