Derogenes Lühe, 1900 (taxonomy source)
Derogenes fuhrmanni Mola, 1912 (taxonomy source)
Derogenes minor Looss, 1901 (redescription)
Derogenes parvus Szidat, 1950 (taxonomy source)
Derogenes ruber Lühe, 1900 (redescription)
Derogenes varicus (Müller, 1784) Looss, 1901 (redescription)
Derogenes varicus (Müller, 1784) Looss, 1901 (taxonomy source)

Azores Exclusive Economic Zone for Derogenes ruber Lühe, 1900 
Barents Sea for Derogenes varicus (Müller, 1784) Looss, 1901 
Canary Islands Exclusive Economic Zone for Derogenes ruber Lühe, 1900 
Cape Verde for Derogenes ruber Lühe, 1900 
Croatian part of the Adriatic Sea for Derogenes ruber Lühe, 1900 
Italian part of the Adriatic Sea for Derogenes minor Looss, 1901 
Kattegat for Derogenes varicus (Müller, 1784) Looss, 1901 
Norwegian part of the North Sea for Derogenes varicus (Müller, 1784) Looss, 1901 
Swedish part of the Skagerrak for Derogenes varicus (Müller, 1784) Looss, 1901 
Western Mediterranean for Derogenes ruber Lühe, 1900 
White Sea for Derogenes varicus (Müller, 1784) Looss, 1901 

 Taxonomic remark

 for Derogenes minor Looss, 1901

in light of available data, we can only affirm that D. ruber and D. latus Janiszewska, 1953 are very similar, ... [details]

 Taxonomy

 for Derogenes fuhrmanni Mola, 1912

We consider thus D. fuhrmanni as a valid species. It was previously synonymised with D. varicus. [details]

 Taxonomy

 for Derogenes parvus Szidat, 1950

We .....consider D. parvus a distinct and valid species. Previously, it was considered a synonym of D. varicus. [details]