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Molecular phylogeny and systematics of native North American lumbricid earthworms (Clitellata: Megadrili)
Fig 15
B. schwerti sp. nov. (Jug Bay paratype).
Ventral view of the clitellar region with a flat spermatophore above the male pore.
doi: https://doi.org/10.1371/journal.pone.0181504.g015