Abstract
The phryganeid caddisfly Eubasilissa signata Wiggins, 1998 was originally described based on a single female specimen from Korea, and no other information on the species was available. Here we record an additional five male and five female specimens of E. signata from Taiwan and describe the male morphology for the first time. Based on morphological differences with other Eubasilissa species, E. signata should be regarded as a separate species and also not a member of the “tibetana” species group. A 658-bp fragment of the mitochondrial cytochrome c oxidase subunit I (COI) gene of the new specimens of E. signata is provided as a DNA barcode.