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Drawings of the penial sheaths presenting the differences in shape and length between the North American and European populations of T. (cf.) americanus and T. kessleri. Drawings maintaining proportionality and shape of the penis sheath, based on photographs by |
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Part of: Kokavec I (2021) Tasserkidrilus cf. americanus (Clitellata, Naididae) – A new record from Slovakia confirms the dissimilarity between the European and North American populations. Biodiversity Data Journal 9: e72846. https://doi.org/10.3897/BDJ.9.e72846 |