The level of intraspecific nucleotide
variability in the cox1 region among the different individuals is only
0.26–0.52%. Pairwise comparisons of the cox1 sequences of C. extraneus
n. sp.with these cucullanid species registered in the GenBank displayed
11.2–18.9% nucleotide variability, which is remarkably higher than the
level of the intraspecific nucleotide variation in C. extraneus n. sp.