The information and views set out in this publication are those of the authors and do not
necessarily reflect the official opinion of IUCN and of the Commission. The Commission …

Theoretical and empirical studies have shown that species radiations are facilitated when a
trait under divergent natural selection is also involved in sexual selection. It is yet unclear …

Although resolving phylogenetic relationships and establishing species limits are primary
goals of systematics, these tasks remain challenging at both conceptual and analytical …

Postdivergence gene flow can trigger a number of creative evolutionary outcomes, ranging
from the transfer of beneficial alleles across species boundaries (ie, adaptive introgression) …

The evolution of the calling songs in Gomphocerinae was evaluated via estimating a
phylogenetic signal of the song characters and an ancestral character state reconstruction …

Cuticular hydrocarbons (CHCs) play a major role in the evolution of reproductive isolation
between insect species. The CHC profiles of two closely related sympatric grasshopper …

Secondary contact in close relatives can result in hybridization and the admixture of
previously isolated gene pools. However, after an initial period of hybridization, reproductive …

Sexual size dimorphism (SSD) is widespread and variable in nature. Although female‐
biased SSD predominates among insects, the proximate ecological and evolutionary factors …

Understanding the genetics of speciation and the processes that drive it is a central goal of
evolutionary biology. Grasshoppers of the Chorthippus species group differ strongly in …

The songs of the following species are presented: Conocephalus (Xiphidion) cinereus
Thunberg, 1815, C.(X.) ictus (Scudder, 1875), C.(X.) magdalenae Nascrecki, 2000 …