Scheldt species source details
Alekseev, V.R. & D. Defaye. (2011). Taxonomic differentiation and world geographical distribution of the Eucyclops serrulatus group (Copepoda, Cyclopidae, Eucyclopinae). In: Defaye, D., E. Suárez-Morales J.C. Vaupel Klein (eds.) Crustaceana Monographs, Studies on Freshwater Copepoda: a Volume in Honour of Bernard Dussart. Brill, 574 pp. 16:41-72.
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Alekseev, V.R. & D. Defaye
2011
Taxonomic differentiation and world geographical distribution of the Eucyclops serrulatus group (Copepoda, Cyclopidae, Eucyclopinae).
In: Defaye, D., E. Suárez-Morales J.C. Vaupel Klein (eds.) Crustaceana Monographs, Studies on Freshwater Copepoda: a Volume in Honour of Bernard Dussart. Brill, 574 pp.
16:41-72.
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Available for editors 
Eucyclops serrulatus (Fischer, 1851) represented as Eucyclops serrulatus serrulatus (Fischer, 1851) represented as Eucyclops (Eucyclops) serrulatus (Fischer, 1851) represented as Eucyclops (Eucyclops) serrulatus serrulatus (Fischer, 1851) (additional source)