Two species of flower mites from the genera Proctolaelaps Berlese, 1923 and Tropicoseius Baker and Yunker, 1964 were recorded from inflorescence of the bromeliad Quesnelia arvensis (Vell.) Mez. on the Island of Superagüi, just off the Brazilian coast, municipality of Guaraqueçaba, State of Paraná. Female and male of Proctolaelaps superagui sp. n. are described and figured in detail. This species belongs to the P. belemensis group. Quesnelia arvensis is presumably a natural host plant for Proctolaelaps superagui sp. n. and Tropicoseius braziliensis Baker and Yunker, 1964, the second species found in this work.