Mesophleps undulatella is a moth of the family Gelechiidae. It is found in Papua New Guinea.
The wingspan is 13–19.5 mm.
The larvae feed on Leucaena species. They live in their seed pods., 2012: A taxonomic revision of the genus Mesophleps Hübner, 1825 (Lepidoptera: Gelechiidae). Zootaxa 3373: 1-82.
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