Chromosomal Rearrangements and Karyotypic Evolution in Decticinae (Orthoptera: Tettigonioidea)

Abstract

An hypothesis has been put forward to explain the differences observed between the karyotype of three species of Decticinae from the Iberian Peninsula. The chromosome rearrangements that have played a role in the evolution of this orthopteran group have been the centric fusion and the pericentric inversion.
Furthermore, a new species is cited with a neo-XY sex-chromosome mechanism within the superfamily Tettigonioidea. This species is the tenth case of tettigoniid carrying B-chromosomes found hitherto in this superfamily.