Fly crosses

    All species of the
D. melanogaster subgroup show pre-mating reproductive barriers. However, individuals of most species can be induced to mate with members of at least one other species in the laboratory.

phylogeny

    Green arcs indicate species pairs that produce viable fertile hybrids and red arcs those that produce viable sterile hybrids [1,2].
 


References

1.    Lee WL, Watanabe TK: Evolutionary genetics of the Drosophila melanogaster subgroup. I. Phylogenetic relationships based on matings, hybrids and proteins. Jpn J Genet 1987, 62:225-239. Link to paper
2.    Lachaise D, Harry M, Solignac M, Lemeunier F, Benassi V, Cariou ML: Evolutionary novelties in islands: Drosophila santomea, a new melanogaster sister species from Sao Tome. Proc r Soc Biol Sci 2000, 267(1452):1487-1495.
Link to paper