original description
Kramp, P. L. 1959a. The Hydromedusae of the Atlantic Ocean and adjacent waters. Dana Report 46: 1-283.
page(s): 28, 129, pl. 2 figs 2-3, text-figs 4-5 [details]
From editor or global species database
Taxonomic remark May be valid species for biogeographic reasons [details]
Taxonomic remark Differences to nominal Pacific species: manubrium small and with only few gonadal folds, radial canals divide already close to centre.
Kramp (1959) thought that the Atlantic population differed slightly from the Pacific one and he introduced the subspecies Sibogita geometrica occidentalis for the Atlantic medusae. The differences to the nominal Pacific species were given as a smaller bell-size, fewer gonadal folds, and radial canals dividing already close to the centre. After having seen more specimens from the Pacific, Kramp (1965) then synonymized the subspecies occidentalis with the nominal Pacific species. [details]