Phylogenetic assessment of the earthworm Aporrectodea caliginosa species complex (Oligochaeta: Lumbricidae) based on mitochondrial and nuclear DNA sequences.

The Aporrectodea caliginosa species complex includes the most abundant earthworms in grasslands and agricultural ecosystems of the Paleartic region. Historically this complex consisted of the following taxa: A. caliginosa s.