01200nas a2200133 4500008004100000245007500041210006900116260001200185300001200197490000700209520074900216100001800965856008300983 1970 eng d00aFreshwater triclads (Turbellaria, Tricladida) from the oriental region0 aFreshwater triclads Turbellaria Tricladida from the oriental reg c11/1970 a271-2940 v493 a

Two new freshwater triclad species of the genus Dugesia Girard, 1850 are described from the oriental region. The first is the only species of freshwater triclad described from Ceylon and the second, a cavernicolous form, is the only one known from Malaya. A synopsis, in tabular form, of the oriental Dugesia species is also given and some aspects of their distribution are discussed. It is intended that the tabular synopsis should provide diagnostic characters for the delimitation of the new and previously described species, and act as a basis for a future revision of the oriental representatives of the genus, many of which are poorly described or poorly known. Apreliminary dichotomous key to the valid species is also provided.

1 aBall, Ian, R. uhttp://onlinelibrary.wiley.com/doi/10.1111/j.1096-3642.1970.tb00742.x/abstract01431nas a2200145 4500008004100000245014400041210006900185300001200254490000700266520086900273100001801142700002401160700001801184856008301202 1998 eng d00aThe genus Dugesia in Australia, with its phylogenetic analysis and historical biogeography (Platyhelminthes, Tricladida, Dugesiidae)0 agenus iDugesiai in Australia with its phylogenetic analysis and  a273-2890 v273 a

The new species Dugesia notogaea Sluys & Kawakatsu, sp. n. is described from Queensland, Australia, representing the first record of the genus Dugesia for that continent. A phylogenetic analysis of the 68 species of Dugesia resulted in the discovery of a new apomorphy for the genus, and a cladogram showing two major phyletic groups. The distributional range of one group has a western accent, whereas that of the other group has an eastern emphasis; the ranges of these two groups overlap in Africa and the Mediterranean region. We attempt to determine the ancestral area for both the Dugesiidae and Dugesia. A scenario for the historical biogeography of the genus Dugesia is discussed. In this scenario it is presumed that the geological history of the Australasian region enabled Dugesia’s from southeast Asia to colonize northern Australia.

1 aSluys, Ronald1 aKawakatsu, Masaharu1 aWinsor, Leigh uhttp://onlinelibrary.wiley.com/doi/10.1111/j.1463-6409.1998.tb00461.x/abstract