ランブル鞭毛虫[ranburubenmouchuu] giardia (flagellate protozoan)
ランブル鞭毛虫症[ranburubenmouchuushou] giardiasis
いも虫[imomushi] hornworm (caterpillar of a hawk moth)
益虫[ekichuu] useful insect
円虫類[enchuurui] round worms

夏虫[natsumushi] summer insect
蛔虫[kaichuu] roundworm (Ascaris lumbricoides)
害虫[gaichuu] harmful insect
鈎虫[kouchuu] hookworm
寄生虫[kiseichuu] parasite

虫螻[mushikera] worm
飛螻蛄[tobikera] caddisfly

飛螻蛄目[tobikeramoku] Trichoptera (the order of insects comprising the caddisflies)
川螻蛄[kawagera] stonefly (any insect of order Plecoptera, esp. those of family Perlidae)