Drosophila birchi

insect

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In evolution: Ethological (behavioral) isolation
The vinegar flies Drosophila serrata, D. birchii, and D. dominicana are three sibling species (that is, species nearly indistinguishable morphologically) that are endemic in Australia and on the islands of New Guinea and New Britain. In many areas these three species occupy the same territory, but no hybrids are known…
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