“Forms” of water mites (Acari: Hydrachnidia): intraspecific variation or valid species?

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Stålstedt, Jeanette; Bergsten, Johannes; Ronquist, Fredrik;
(2013)

In many groups of organisms, especially in the older literature, it has been common practice to recognize sympatrically occurring phenotypic variants of a species as “forms”. However, what these forms really represent often remains unclear, especially in poorly studied ... View more
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