Phoracantha obscuraPhoracantha obscura is a species of longhorn beetle native to Australia.DescriptionMales are between 13 and 28 mm while females are 14 to 29 mm. The head, pronotum and elytra vary from blackish brown to dark reddish brown, and the elytra have two yellow fascia. Antennal segments 3 to 10 have apical spines.