Pair of lice lost or parasites regained: the evolutionary history of anthropoid primate lice

Table 1 Divergence date estimates.

MRCA (clade number)	Cox1 and EF1α	Cox1	EF1α	Cox1 and EF1α (r8s, 20 MYA)	Cox1 and EF1α (r8s, 25 MYA)	Cox1 (r8s, 20 MYA)	Cox1 (r8s, 25 MYA)
Pedicinus (3)	10.63 (7.08–14.94)	10.23 (6.56–15.17)	10.91 (3.02–18.87)	11.52	13.21	11.53	14.40
Pthirus (1)	3.32 (1.84–5.61)	3.86 (2.05–7.49)	1.76 (0.05–6.75)	3.56	4.45	3.48	4.35
P. schaeffi and P. humanus (2)	6.39 (3.94–9.96)	6.87 (4.07–11.65)	6.65 (1.72–14.70)	5.03	6.28	4.92	6.15
Pediculus and Pthirus (4)	12.95 (9.42–17.38)	13.03 (9.25–18.21)	14.66 (7.26–22.23)	10.56	14.41	10.45	13.06
OWM/Ape Calibration	22.50 (20.13–24.87)	22.39 (20.12–24.84)	22.48 (20.12–24.87)	20.00	25.00	20.00	25.00

Mean divergence date estimates (in millions of years) for the clades shown in Figure 3 (see Figure 3 for clade numbers). Divergence estimates using a 20–25 calibration point for the split between Old World primate lice (Pedicinus) and Anthropoid primate lice (Pediculus and Pthirus) in multidivtime are given in the first three columns (95% credibility intervals in parentheses). Mean divergence date estimates using 20 MYA and 25 MYA calibration points for the split between Old World and Anthropoid primate lice using the Langley Fitch model in r8s are indicated in the final four columns for the Cox1+EF1α combined analysis and the Cox1 gene alone.

ISSN: 1741-7007