Symbiont-host
Guides
Mermessus undulatus
Dancing Dwarf Weaver
Mermessus undulatus is a species of dwarf spider in the family Linyphiidae, commonly known as the Dancing Dwarf Weaver. It was first described by Emerton in 1914 under the basionym Gongylidium undulatus. The species belongs to a genus that has been studied for its complex heritable symbiont communities, with some species hosting up to five different bacterial symbionts simultaneously.