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The rabies virus is the type species of the Lyssavirus genus, which encompasses other similar viruses. Lyssaviruses have helical symmetry, with a length of about 180 nm and a cross-sectional diameter of about 75 nm.
For example the scientific name of the black carpenter ant is Camponotus pennsylvanicus (DeGeer). In this case, Camponotus is the genus (all carpenter ants are in this genus), pennsylvanicus is the species, and (DeGeer) is the author who originally described this species.