''Musonius'' is a genus of longhorned beetles in the family

Cerambycidae The longhorn beetles (Cerambycidae), also known as long-horned or longicorns (whose larvae are often referred to as roundheaded borers), are a large family of beetles, with over 35,000 species described. Most species are characterized by anten ...

. This genus has a single species, ''Musonius luctuosus'', found in

Madagascar Madagascar, officially the Republic of Madagascar, is an island country that includes the island of Madagascar and numerous smaller peripheral islands. Lying off the southeastern coast of Africa, it is the world's List of islands by area, f ...

References

Ceroplesini Beetles described in 1902 Monotypic beetle genera {{Crossotini-stub