Natural hybridization between the sympatric Hawaiian species Drosophila silvestris and Drosophila heteroneura

Abstract

These species may have been open to hybridization since their first sympatic encounters following their inception in allopatry. That they remain as strictly recognizable morphological entities is due both to their current partial allopatry and to the action of sexual selection in maintaining 2 separate major modes of efficient reproduction. -from Authors