but this capacity has also been challenged by some authors (see Meyer & Paulay 2005; Meier et al. 2006). It appears
that this particular attribute of COI varies across taxa. A possible example of the discovery of a previously unknown
sibling species can be seen in the NJ tree for the Stegopterna mutatacomplex, which currently includes two nominal
sibling species:St. mutataand St. diplomutata. Stegopterna mutatais a triploid (presumably autotriploid), parthenogenetic species whose populations consist only of females, whereas St. diplomutatais a diploid sexual species