title: Colonization of a temperate-zone region by the fruit fly <i>Drosophila</i> <i>simulans</i> (Diptera: Drosophilidae)
abstract: The fruit flies Drosophila simulans Sturtevant, 1919 and Drosophila melanogaster Meigen, 1830 are sibling species that occupy similar niches. However, unlike D. simulans, D. melanogaster has spread far beyond tropical and subtropical regions deep into temperate climate zones. A number of invasion events by D. simulans into temperate climate zones have been reported; however, its ability to overwinter and establish local populations in these areas is disputed. Here, we report the wide dispersal o
journal: Canadian Journal of Zoology