Heligmosomoides polygyrus: One species still

We are responding to a recent article in which Behnke and Harris apply a different species name to the laboratory nematode commonly termed H. polygyrus, to distinguish it from the ‘wild’ parasite found in European Apodemus mice [ 1 ]. We believe this renaming to be certainly premature and quite probably incorrect. At this stage, we consider there is a convincing case for retaining the subspecies taxonomy that classifies the laboratory parasite H. polygyrus bakeri.