Marcus E 1954 (citation)- from coarse sand in upper littoral of island of Sao Sebastiao- to 0.6mm, illustration p 429-432, 480-481. Dorjes J 1968 (citation)- places in new genus Haplocelis as type because of the possesion of 2 non cuticularized spermatic ducts. Dorjes J, Karling TG 1975 (citation)- Swedish Museum of Natural History, Brazil. Ehlers U, Doerjes J 1979 (citation)- in comparison p 34.
Marcus E 1954 (citation) pg. 480-481: 'Otocelis dichona, n. sp. (Fig. 14-17), from coarse sand in the upper littoral of the island of São Sebastião, differs from the two species that Westblad (1946) maintains in Otocelis by absence of eyes, supraterminal gonopore (q) and two winding spermatic ducts (v, w) that begin with small funnels and have intracellular lumina. Cyanophilous caudal glands (g) open in a small terminal or subterminal area. The ovary (o) begins with 2 germ-zones and continues unpaired and not quite median behind the mouth (b). The vacuoles in the epicytium (y) may be artificial, though they occur in an ample material fixed with warm "Susa". The male copulatory organ (p) is similar to that of O. rubropunctata. The round, not flattened, ventral side, the mucous glands (c) restricted to the epicytium and the almost unpaired ovary (o) agree with O. gullmarensis.'
Hooge M.D. & Rocha C.E.F. 2006 (citation) p. 37 - report this species from the coast of Sao Paulo, Brazil. Transfer Haplocelis dichona to the family Isodiametridae
Notes from synonyms
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