Eucosmophora sideroxylonella is a moth of the family Gracillariidae. It is known from Cuba and Florida.Global Taxonomic Database of Gracillariidae (Lepidoptera)
The length of the forewings is 3.4 mm for males and 3.8 mm for females.Biology and systematics of the neotropical leafminer genus Eucosmophora (Lepidoptera: Gracillariidae)
The larvae feed on Lyonia fruticosa, Dipholis salicifolia, Manilkara jaimiqui, Sideroxylon foetidissimum, Sideroxylon celastrinum and Sideroxylon pallidum. They mine the leaves of their host plant.
References