The name of this species is officially Acalolepta longicornis (Thomson,1865). The specimens from Tanahbesar (Aru) belong to the nominotypical form
The revision of this group The Acalolepta australis species-group, with revalidation of Dihammus Thomson, 1864 as a subgenus (Coleoptera, Cerambycidae). Les Cahiers Magellanes 31 can be requested here.