Species Pair Divergence time (Mya) Reproductive Isolating Barrier Component of Reproductive Isolating Barrier (RIi) Source
D. galeata x D. longispina 5.052 Habitat 0.400 1
D. cucullata x D. hyalina 4-62 Habitat 0.209 2,3,4
Temporal 0.083 5
D. hyalina x D. galeata 3.733 Habitat -0.239 2, 3, 4
Temporal 0.082 6,7
Hybrid Inviability 0.652 8, 9, 10,11,12,13
D. galeata x D. cucullata 2.573 Habitat 0.131 2,3,4
Temporal 0.569 7,14
Ecological Inviability -0.048 15
D. pulex x D. pulicaria 21 Habitat 0.979 16
Temporal 0.313 16
Mating-Fertilization 0.174 16,17
Hybrid Inviability -0.104 16,17
Hybrid Sterility 0.005 17