成虫:口、腹吸盘及排泄孔的周围都未见有感觉乳突或其他特殊结构,在生殖孔的下缘有两行呈八字形排列的单乳突,每排4～6个。姜片虫的体棘只见于虫体腹面,其分布以近虫体周围及腹吸盘处较密,而中部较稀,排列成不整齐的横列状。体棘为单生型,根 Adults: mouth, abdominal suction and excretion holes around no sense papillae or other special structure, the lower edge of the genital hole has two rows of eight-shaped arrangement of single papillae, each row of 4 to 6. Ginger beetle body spines found only in the belly of the insect body, its distribution to the near parasites and abdominal sucker at a more dense, while the central more dilute, arranged in irregular rows like. Spines for the solitary type, root