Genetic divergence values were higher between species from different previously assigned subgenera [now
recognized as species groups in Hernández 2011]. The most divergent pairs were S. itaunense [ORBITALE species
group] and S. innoxium [PICTIPES species group] (18.4%), and S. pictipes[PICTIPES species group] (18.9%) and
S. earlei [TARSATUM species group] (19.5%). As expected, smaller values were found among species within the
same species group, e.g. S. orbitaleandS. lithobranchium(3.0%) and S. hirtipupa and S. itaunense (2.8%)
[ORBITALE species group] (Table 3).