Gordius ssp. (铁线虫属).
During our annual Autumn trip to Hengshan we found a disoriented mantis (hierodula chinensis), stumbling around our hotel at night. We placed it in a container with a little water and three of these gordius worms rapidly came out. Most likely the unlucky mantis has been carrying these horsehair worms in her abdomen for months and were drawing her towards water: to drown and allow the worms to escape, lay eggs and continue their cycle of life.