Eucyclops speratus. Female A P3, anterior (Saint-Petersburg) B P4, anterior (Saint-Petersburg) C P4 coxa and intercoxal sclerite, posterior (Udmurtia). Scale bars: 50 μm.

 
 
  Part of: Novikov A, Sharafutdinova D, Abramova E, Mayor T, Chertoprud E (2025) An integrative approach to the delimitation of pseudocryptic species in the Eucyclops speratus complex (Copepoda, Cyclopoida) with a description of a new species. ZooKeys 1226: 217-260. https://doi.org/10.3897/zookeys.1226.138389