Plutella porrectella is a moth of the family Plutellidae found in Europe, the Caucasus, southern Siberia and Asia Minor.
Forewings pale ochreous, suffusedly streaked with whitish; costa and dorsum blackish - dotted; a whitish subdorsal longitudinal line, thrice sinuate upwards, margined above with an ocbreous-brownish suffusion and some blackish scales, darkest in the depressions discal stigmata usually indicated by dark fuscous dashes termen ochreous-brown, spotted with black.
The larva is light green; dorsal line darker; dots black; head brownish - marked.
The larvae feed on Brassicaceae species, including Hesperis matronalis.
They distort or connect the leaves of their host plants with small amounts of silk.