Table 1.

Summary statistics of relaxed molecular clock estimates of the divergence time between Demodex species based on amino acid sequence alignments of mitochondrial proteins

Prior on tmrca [Acariformes]	Solifugae included?	tmrca [Acari] (mya)	tmrca [ Demodex] (mya)
Exponential [10] Offset 410	No	483 [450 – 523]	129 [87 – 173]
Gamma [2,15] Offset 410	No	504 [457 – 560]	134 [86 – 180]
Uniform [410, 510]	No	520 [456 – 589]	137 [88 – 186]
Exponential [10] Offset 410	Yes	475 [441 – 509]	133 [82 – 185]
Gamma [2,15] Offset 410	Yes	494 [448 – 546]	140 [88 – 191]
Uniform [410, 510]	Yes	509 [449 – 578]	145 [93 – 197]

mya = millions of years ago; tmrca = time to most recent common ancestor. tmrca[Acari] represents the estimated divergence time between Acariformes and Parasitiformes. tmrca[Demodex] represents the estimated divergence time between D. brevis and D. folliculorum. Shown for the tmrca estimates are the mean and 95% highest probability density intervals for each analysis.