Mass Effect 2Edit
A harvester is a huge beast that appears to be part insectoid and part annelid. Its bulky body appears to resemble some sort of insect or crab with its head extending high above the body on a serpentine neck, earning these creatures the derogatory name of "worm-necks". The intelligence of the harvesters is unknown; in the few encounters between harvesters and known sapient races, the harvester has displayed what could be called "malevolent intelligence" as it releases hordes of klixen to attack enemies. These beasts have been found on various worlds such as the chlorine-rich world of Tarith and the Krogan homeworld of Tuchanka.