Abstract
Present investigation deals with taxonomic studies of Pseudophyllidean cestode Senga follicularae sp. nov. collected from the intestine of Mastacembelus armatus (Lacepede, 1800) at Ahmedpur (M.S.) India during the period of February, 2012 to January, 2014. Worm comes closer to all known species of this genus in general topography of organs but differs having Scolex triangular, having pair of sessile bothria, Rostellum oval to rounded, present at anterior end of scolex, armed with double row of 40-44 hooks, 20-22 hooks in each row, Neck is absent, Mature proglottids five times broader than long, Testes are medium in size, oval to rounded in shape, pre-ovarian, 50-55 in numbers, Cirrus pouch cylindrical, pre-ovarian in position, located in the centre of the proglottids, cirrus is thin, lies within the cirrus pouch, Vas deferens is short, thin, straight tube, measures Vagina and cirrus pouch open a common pore as genital pore, which is small in size, oval in shape, Vagina thin, tubular, arises from the genital pore, runs posteriorly, slightly curved, Receptaculum seminis is straight tube, short, open into ootype, Ovary distinctly bilobed, transversely placed at posterior margin of the segment, Vitellaria follicular, arranged in two rows, Gravid segments three to four times broader than long, Uterus saccular, filled with eggs, Eggs elongated, oval in shape, pointed at both ends, Uterine pore rounded, lies to words anterior region of the segments