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Xiao et al. (2006) reported Echinococcus shiquicus, a new species from the Qinghai–Tibet plateau region of China with Tibetan foxes as the definitive host. Two types of adult worms were recovered and the variant which had a short strobila consisting of single immature and single gravid segments constituted the majority of the specimens. The strobila, rostellar hooks, location of the genital pore and the number of eggs in gravid uterus helped in differentiating Echinococcus shiquicus from the other species. The metacestode of Echinococcus shiquicus was detected exclusively from plateau pikas. The larvae are unique and they develop into unilocular minicysts approximately 1 cm in diameter within the liver or lungs.
