Two new species of flatworm, collected from a beach at eastern Shenzhen, China, were studied through an integrative approach by combining morphological, histological, histochemical (acetylcholinesterase, AChE), and molecular (18S r- DNA) data. These belong to two genera marine triclads, previously unrecorded viz. Nerpa Marcus, 1948 Paucumara Sluys, 1989. fistulata Wang & Chen, sp. nov. is characterized by: transparent body; principally pentamerous intestine with three distinct...

Two new species of the genus Dugesia (Platyhelminthes, Tricladida, Dugesiidae) from Hainan Island China are described on basis morphological, karyological and molecular data. semiglobosa Chen & Dong, sp. nov . is mainly characterized by a hemispherical, asymmetrical penis papilla with ventrally displaced ejaculatory duct opening terminally at tip papilla; vasa deferentia separately into mid-dorsal portion intrabulbar seminal vesicle; two diaphragms in duct; copulatory bursa formed...

The paper provides a taxonomic description of new genus and species terrestrial cavernicolan triclad flatworm from Barro Colorado Island, Panama. Molecular sequences this were already deposited in GenBank several years ago under the provisional taxon name Cavernicola sp. Animals have following characteristics: absence pigmentation eyes; mouth opening located halfway pharyngeal cavity; few, ventral testes extending position far posterior to ovaries directly behind strongly recurving sperm...

Small (c. 1 cm long) terrestrial planarians found in the United Kingdom, Netherlands and France are described as a new species, Marionfyfea adventor sp. nov. Individuals of species have patchy brown external appearance with small, seemingly random pale blue-ish patches. They multiple eyes, uniserial around anterior end, biserial or triserial laterally for short distance then sparsely lateral to posterior end. The anatomy is characterized by five six pairs ventral testes single pair ovaries...

In this paper we report a new species of Dendrocoelum from the chemoautotrophic ecosystem Frasassi hypogenic cave complex in northeastern Apennines Italy. leporii Stocchino & Sluys, sp. nov. is characterized by presence muscular atrial valve, which unique within genus. Moreover, also penis papilla with pseudoflagellum, numerous testes situated ventral, dorsal and median body regions follicles extending to far posterior end body, large adenodactyl so-called Balkan type musculature. The...

We report the description of a new species freshwater flatworm genus Dendrocoelum inhabiting chemoautotrophic ecosystem Movile Cave as well several sulfidic wells in nearby town Mangalia, thus representing first planarian fully described from this extreme biotope. The was also found non-sulfidic localized villages vicinity cave with total nine examined populations. obstinatum Stocchino & Sluys, sp. nov. represents triclad being able to live both and waters. Among fauna Mangalia it is...

Abstract This paper presents a revised classification for the higher taxa within Tricladida. A historical sketch is provided of classificatory systems triclad flatworms. As far as possible, new based on published phylogenetic studies. tree generalizing currently available hypotheses higher-taxon relationships Tricladida forms backbone classification. There no longer any room in formal classifications taxon names Terricola and Paludicola, previously used to indicate suborders freshwater land...

On the basis of extensive surveys, an update is provided on diversity, taxonomy, anatomy, and geographic distributionof five species North African freshwater planarians, including description one new species. The Dug-esia tubqalis Harrath & Sluys, sp. nov. mainly characterized by following features: elongated penis surroundedwith two penial folds at its base, dorsal bigger than ventral ; atrium divided into a male common atriumby kind non-muscular ridge; terminal expansion ejaculatory...

Exploration of various freshwater bodies in the Kingdom Saudi Arabia led to discovery a new species Dugesia, thus representing first documented record planarians this country and second fully naturally sexual population Dugesia Arabian Peninsula. Based on morphological, karyological, anatomical, molecular data, from is here identified as distinct, species, bursagrossa Harrath & Sluys, sp. nov. The characterized by following anatomical features: dorsal testes; highly glandular,...

Two new species of the genus Dugesia from Hainan Island and Leizhou Peninsula are described by applying an integrative approach, including morphological, karyological, histological, molecular information. In phylogenetic tree, two species, saccata Chen & Dong, sp. nov. aconcinna , fall into Eastern Palearctic/Oriental clade Oriental/Australasian clade, respectively, while sharing only a rather distant relationship. The separate specific status is supported also their genetic distances....

Two new species of the genus Dugesia from Southern China are described by applying an integrative approach, including morphological, karyological, histological, and molecular information. In phylogenetic tree, two species, pendula Chen & Dong, sp. nov. musculosa nov., fall into Eastern Palearctic/Oriental clade Oriental/Australasian clade, respectively, while sharing only a rather distant relationship. The separate specific status is supported also their genetic distances. characterized...

A phylogenetic hypothesis for the triclads is presented and characters on which it based are discussed.

The paper presents an integrative taxonomic study on dugesiid freshwater flatworms from the north-eastern Mediterranean region by applying both morphological and molecular criteria in formulation of stable species hypotheses. information obtained for specimens was used a traditional way comparing organismal traits various populations candidate with those known species, as documented literature revealed examination histological sections museum specimens. In delimitation General Mixed...

Summary Triclads use the excess of spermatozoa received from partner during copulation as an additional source nutritive material. Digestion sperm takes place in various resorptive organs, such copulatory bursa, lateral bursae, spermiduct, vesicles, and oviducal tubae. Sperm organs may concern either newly evolved or result a change function already existing structure.

Abstract A recent study on the freshwater planarian fauna of Corsica and Sardinia established that formerly presumed single species Dugesia benazzii subsumed a complex species. In study, thorough integrative taxonomic approach, combining molecular, morphological, karyological data, uncovered presence two new endemic For present additional samplings were conducted Corsica, covering several localities. The data obtained added to our previous datasets, which included information specimens...