The olive fly, Bactrocera oleae , is the major pest of olives in most commercial olive‐growing regions worldwide. The species is abundant in the Mediterranean basin and has been introduced recently into California and Mexico, creating problems for quarantine protection and international trade. Here, we use nuclear microsatellite markers and mitochondrial sequences to examine the history of olive fly range expansion and coloniz...

In this study allozyme data were used to examine evolutionary relationships in the cosmopolitan collembolan genus Isotomurus . Fifty‐six south‐western European populations from 13 species were compared, with the aim of delimiting species boundaries and testing the robustness of the most frequently used morphological characters for species identification. Observed allozyme variability suggests that genetic differentiation is mo...

A detailed study of morphological characters in populations of the collembolan genus Isotomurus from southern Europe is presented. Isotomurus is a cosmopolitan genus in which species diagnosis primarily relies on pigmentation patterns and chaetotaxy. Correct diagnosis is often complicated by the high variability of these characters. This has created confusion in the systematics of the genus and has led to descriptions of sever...