Guda wani nau'i ne na kuda (iyali Calliphoridae) wanda yawanci yana da ƙarfe mai launin shuɗi, koren, ko baƙar fata kuma galibi ana samunsa a kusa da matattun dabbobi ko najasar dabba. An kuma san ƙaƙƙarfan ƙazafi da iya yin ƙwai a kan ruɓar kwayoyin halitta, ciki har da naman dabbobi, kuma suna iya zama mahimmanci a binciken bincike don sanin lokacin mutuwar jiki.
