Spumacinctus is a genus of beetles in the family Scirtidae with three described species that occur in the Neotropical realm.

Species These three species belong to the genus Spumacinctus: Spumacinctus championi (Picado, 1912) Spumacinctus mindu Jorge, Libonatti, Benetti, & Hamada, 2026 Spumacinctus porcicaudalis Jorge, Libonatti, Benetti, & Hamada, 2026

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