Trisecodes is a genus of parasitic chalcid wasps of the family Systasidae. The genus was originally placed in Eulophidae, based on a number of morphological features, but molecular evidence suggests that the genus is more closely related to Systasis and Semiotellus. The type species (Trisecodes agromyzae) is a parasitoid of a range of Agromyzid leaf-mining flies.
There are two known species:
These are small (0.6-0.85 mm long), dark wasps. Their tarsi have only three segments. Each antenna has three short funicular segments and a clava with two segments.