Stigmella xystodes is a moth of the family Nepticulidae first described by Edward Meyrick in 1916. It is found from the Oriental region to the Near East, North Africa and the Canary Islands.
The wingspan is 4.9–6.6 mm for males and 5–5.5 mm for females. Adults are on wing from July to August in the orient.
The larvae feed on Cyperus rotundus and probably Cyperus conglomeratus. They mine the leaves of their host plant.