kingdom: Animalia >
phylum: Arthropoda >
class: Insecta >
order: Hymenoptera >
superfamily: Apoidea >
family: Crabronidae Latreille, 1802 >
subfamily: Crabroninae Latreille, 1802 >
tribe: Crabronini Latreille, 1802 >
subtribe: Crabronina Latreille, 1802 >
genus: Rhopalum Stephens, 1829 >
Southern Asia