01679nas a2200121   4500008004100000245011000041210006900151300001200220490000800232520124900240100001601489856005201505       1986                        eng d00aUltrastructure of the copulatory stylet and accessory spines in Haplopharynx quadristimulus (Turbellaria)0 aUltrastructure of the copulatory stylet and accessory spines in   a157-1630 v1323 aThe copulatory organ of Haplopharynx quadristimulus Ax, 1971 (Carolina form, Rieger, 1977) consists of a proximal prostatic vesicle and a distal stylet apparatus comprising a central tubular stylet and four to five peripheral accessory spines . By electron microscopy it could be seen that the stylet and spines were intracellular specializations . The copulatory organ can be interpreted as a specialization of an epithelial canal extending from the testes to the body wall . In the complex stylet apparatus, the epithelium was differentiated into six cell types. The stylet, which was formed in a matrix syncytium next to the prostatic vesicle, extended into the lumen of the stylet canal . The interior of the stylet apparatus contained one group of cells that had thick ciliary rootlets and another that had rootlet-like ribbons . The cells that contain the rootlets enveloped bundles of longitudinally arranged muscles. The accessory spines were formed in cells which lay peripheral to the muscle bundles . The spines, stylet, rootlet-like ribbons, and rootlets had similar patterns of periodic cross striations . The similarity in striation patterns suggests that the accessory spines and stylet are composed of modified ciliary rootlets.1 aDoe, D., A.  uhttps://macrostomorpha.myspecies.info/node/469300540nas a2200145   4500008004100000245006200041210006200103300001200165490000700177520010900184653001600293100001500309700001800324856005200342       1981                        eng d00aSand dwelling Turbellaria from the Netherlands delta area0 aSand dwelling Turbellaria from the Netherlands delta area  a113-1270 v843 aMentions:
Bradynectes sterreri (considered Bradynectes scheldtensis n. sp. by Faubel &amp; Warrick 2004)10aMacrostomum1 aMartens, P1 aSchockaert, E  uhttps://macrostomorpha.myspecies.info/node/120201863nas a2200133   4500008004100000245005600041210005600097300001000153490000800163520146600171653001601637100002401653856005201677       1986                        eng d00aAsexual reproduction and the turbellarian archetype0 aAsexual reproduction and the turbellarian archetype  a35-450 v1323 aDescribes:
Myomacrostomum unichaeta n. gen. n. sp.
Myomacrostomum bichaeta n. sp.
The turbellarian archetype is widely believed to have been a hermaphrodite lacking asexual reproduction, and such asexual reproduction as is now seen in the Turbellaria (as paratomy and architomy) is generally assumed to have arisen secondarily several times independently. Asexual reproduction clearly prevails among the most primitive metazoans such as the placozoans, sponges, and radiates, however, and if the Platyhelminthes is indeed an early offshoot of bilaterian evolution, as some have claimed, then it is reasonable to expect asexual reproduction to be a primitive feature of the Turbellaria. Asexual reproduction by paratomy or architomy is found in all three main evolutionary lines of the Tlrrbellaria and is most common among primitive groups such as the Catenulida and Macrostomida. The discovery of a new, apparently primitive marine genus of Macrostomida having paratomy widens the known incidence of asexual reproduction within that order. The presence of a muscle ring around the gut of several distantly related genera of the Macrostomida and similarities this ring shows with septa in the division plane of paratomizing species are evidence that paratomy was a feature of the stem species for this order - a feature only secondarily lost in most macrostomids - and suggest that asexual reproduction is a primitive feature for the Platyhelminthes as a whole.10aMacrostomum1 aRieger, Reinhard, M  uhttps://macrostomorpha.myspecies.info/node/123800709nas a2200133   4500008004100000245011300041210006900154300001000223490000700233520025100240653001600491100001600507856005200523       1977                        eng d00aTurbellaria from intertidal flats and salt-marshes in estuaries of the south-western part of the Netherlands0 aTurbellaria from intertidal flats and saltmarshes in estuaries o  a29-320 v523 aMentions:
Microstomum lineare
Microstomum sp.
Macrostomum balticum
Macrostomum distinguendum
Macrostomum finlandense
Macrostomum hamatum
Macrostomum hystricinum
Macrostomum pusillum
Macrostomum rostratum
Macrostomum spirale
Macrostomum tenuicauda10aMacrostomum1 aHartog, den  uhttps://macrostomorpha.myspecies.info/node/112201196nas a2200145   4500008004100000245007300041210006900114300001400183490000800197520074000205653001600945100001300961700002400974856005200998       1998                        eng d00aOld and new records of turbellarians from the central areas of Spain0 aOld and new records of turbellarians from the central areas of S  a299–3050 v3833 aMentions:
Macrostomum tuba
Macrostomum rostratum
Macrostomum sp. 1
Macrostomum sp. 1
Promacrostomum gieysztori
Microstomum lineare
From the point of view of its biodiversity, the Iberian Peninsula is one of the most interesting areas. Its special geographical location and geological history have created a high degree of diversity within the invertebrates groups in general, and within the ecological group of the Turbellaria in particular. In the present work, old and new records of turbellarian species from the central areas of the Iberian Peninsula are presented. Data on their biology and distribution within the freshwater habitats, mainly limnic, are also provided. This study is mainly based on the project Fauna Iberica III.10aMacrostomum1 aGamo, J.1 aNoreña-Janssen, C.  uhttps://macrostomorpha.myspecies.info/node/1155