Figure 2. Maximum likelihood tree using nuclear genome sequences. South Island, NZ Daphnia samples (red circles); North Island, NZ Daphnia sample (red ring); D. pulex samples (black circles); D. pulicaria samples are marked with blue circles. Inset on the right shows the phylogeny of the South Island and North American D. pulicaria in more detail. Bootstrap >75 are shown. T1 is the divergent time between the North American and the South Island D. pulicaria.T2 is the expansion time of South Island D. pulicaria .