Pseudopostega breviapicula is a moth of the Opostegidae family. It was described by Donald R. Davis and Jonas R. Stonis, 2007. It has a wide range in the Neotropical Region from Panama south to north-eastern and south-eastern Brazil and north-central Argentina. The length of the forewings is 2.9-3 mm. Adults have been recorded throughout much of the year over its broad range, including October, December and January (in Brazil), September (in Argentina) and May (in Panama).