Bivalvia | Sphaerioida | Sphaerioidea | Sphaeriidae | Sphaeriinae | Euglesa obtusalis nominal species Pisidium obtusale var. fragilis Westerlund, 1873
Clessin in Westerlund, 1873, Fauna Moll. Terr. Fluv. Suec. Norv. Dan. (2): 548.
Clessin, 1874, Conch. Cab. 9(3): 28.
(intro'd as intra-sp. of Cyclas obtusalis Lamarck, 1818)
= Euglesa obtusalis Taxonomic Opinions
= Euglesa (Cyclocalyx) fragilis (Clessin in Westerlund, 1873) — Vinarski & Kantor, 2016
+ Pisidium obtusale (Lamarck, 1818) — He & Zhuang, 2013
= Cyclocalyx fragilis (Clessin in Westerlund, 1873) — Kantor et al., 2010
= Cyclocalyx (s.s.) fragilis (Clessin in Westerlund, 1873) — Starobogatov et al., 2004
= Pisidium obtusale var. fragile Clessin — Clessin, 1874
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