Pancreatic leech - Eurytrema pancreaticum

Japanese: スイテツ(膵蛭) - スイテツ(英語表記)Eurytrema pancreaticum
Pancreatic leech - Eurytrema pancreaticum
A parasitic worm belonging to the family Dichleata of the class Platyhelminthes Trematoda. It is distributed in Asia and South America, and mainly parasitizes the pancreatic duct, bile duct, or duodenum of ruminant animals such as pigs, goats, sheep, cattle, buffaloes, and camels. Body length: 8.5-16.0 mm, body width: 3.0-8.5 mm. The oral suckers are slightly larger than the abdominal suckers. There are two testes, one on each side posterior to the abdominal suckers. The ovary is small and located posterior to the left testis. The genital opening is located in the middle of both suckers, on the midline, just behind the intestinal bifurcation. The eggs are very similar to those of the lancet fluke.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:
扁形動物吸虫綱二腔吸虫科に属する寄生虫。アジアや南アメリカに分布し,主としてブタ,ヤギ,ヒツジ,ウシ,スイギュウ,ラクダなどの反芻(はんすう)動物の膵管,胆管,あるいは十二指腸に寄生する。体長8.5~16.0mm,体幅3.0~8.5mm。口吸盤は腹吸盤よりやや大きい。精巣は2個,腹吸盤の後方左右にある。卵巣は小さく,左の精巣の後方にある。生殖口は両吸盤の中央,正中線上で腸分岐部の直後方にある。虫卵はヤリガタキュウチュウ(槍形吸虫)のものによく似ている。

出典 株式会社平凡社世界大百科事典 第2版について 情報

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