| "forms" of water mites (acari: hydrachnidia): intraspecific variation or valid species? | 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 groups. with new algorithms for dna-based species delimitation, the status of forms can be explicitly tested with molecular data. in this study, we test a number of what is now recognized as valid species of water mites (hydrachni ... | 2013 | 24223279 |