| Author Title Journal |
Moretto HJA (1996) La planaria chilena Dugesia sanchezi (Platyhelminthes: Turbellaria) y Dugesia bonaerensis n. sp., planaria de la pampa humeda de Buenos Aires, Argentia. Revista Chilena de Historia Natural 69:213-230 |
Abstract / Notes
The anatomy, in particular their reproductive systems, of two species of planarians, Dugesia sanchezi Hyman 1959 and Dugesia bonaerensis n. sp. is described. The differences are: (1) shape and localization of the penial spermiducts; (2) sexual secretions (physiology of the copula); (3) types of epithelia of the atria, penis and bursal canal; (4) exit of ovoviteloducts; (5) habitat; (6) thickness of the basal membrane of the dorsal epidermis. The use of a new differential criterium in the taxonomy of planarians: the physiology of the copula, is introduced. Dugesia sanchezi is a Chilean planarian which lives under stones in rivers and streams from Central Chile. The argentine populations of Dugesia from the damp pampas of Buenos Aires, would possess a cryptic polymorphism and among these sibling species, the most abundant would be Dugesia bonaerensis n. sp., described here. The planarian from Buenos Aires studied by Bohmig (1902) are not a geographic variant of Dugesia sanchezi as Hyman had considered in 1959. Besides, the suspicion of this author about the mistake made by Bohmig when he nominated his specimen Dugesia anceps (Kenk 1930), is confirmed.
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