The maximum-likelihood phylogram for COI gene. Haplotypes obtained in present work are indicated in bold. Arrows and the letter C indicate cave haplotypes.

  Part of: Osikowski A, Georgiev D, Hofman S, Falniowski A (2015) Does the genetic structure of spring snail Bythinella (Caenogastropoda, Truncatelloidea) in Bulgaria reflect geological history? ZooKeys 518: 67-86.