ПАРАЗИТОЛОГИЯ, 51, 1, 2017 УДК 576.895.121 MORPHOLOGY OF CESTODE WITH ATYPICAL MODE OF ATTACHMENT © N. A. Pospekhova Institute of Biological Problems of the North FEB RAS Magadan, 685000 E-mail: posna@ibpn.ru Submitted 01.08.2016 Morphological features of Rauschitaenia ancora (Mamaev, 1959), a cestode with atypical mode of attachment («anchoring» in the wall of the host intestine), are considered. <...> At the center of the overgrown scolex there is a rostellum, size of which is close to that of the developed metacestode. <...> Large suckers are composed mainly of loose parenchyma and fine radial muscle fibers. <...> Fragments of host tissue are noted in the suckers’ cavity. <...> Surface of the scolex is covered with large microtriches, which are in contact with the host tissue having signs of degradation. <...> Excretory canals contain fluid (closer to the surface) and numerous lipid droplets (deeper located canals). <...> МОРФОЛОГИЯ ЦЕСТОДЫ С НЕТИПИЧНЫМ СПОСОБОМ ПРИКРЕПЛЕНИЯ © Н. <...> Поспехова Институт биологических проблем Севера ДВО РАН Магадан, 685000 Поступила 01.08.2016 Рассматриваются особенности морфологии Rauschitaenia ancora (Mamaev, 1959), цестоды с нетипичным способом прикрепления («заякоривание» в стенке кишки хозяина). <...> The new genus of cestodes with a single species Rauschitaenia ancora (Mamaev, 1959) was described within the family Dilepididae on the material from three common snipes Gallinago gallinago L., obtained in the Chaun lowland, Magadan Province (Bondarenko, Tomilovskaya, 1979). <...> Representatives of this species differed by atypical mode of attachment to the host intestine. <...> If the majority of «higher» cestodes attach with the help of the rostellum and four suckers, besides, providing movement of the parasite, then the scolex and the anterior part of R. ancora strobila penetrate deeply into the intestinal wall almost perforating it. <...> The scolex of the cestode increases almost by 10 times in comparison with the larva; a clearly visible capsule on the outer surface of the intestine is formed around the front part of the worm excluding any change of localization (Bondarenko, Tomilovskaya, 1979). <...> Another structural peculiarity of R. ancora concerns the presence of multiple anastomosed excretory vessels, among which it is impossible to distinguish two pairs of main longitudinal canals common for cestodes. <...> The atypical attachment mode which defines tissue localization of the front part of the cestode with the rest of strobila <...>