Case report: Parasitism of Ornithonyssus bursa (Macronyssidae) in humans in the Taquari River Valley region, southern Brazil

Ornithonyssus bursa hematophagous mite whose main host is wild and domestic birds, which can temporarily parasitize humans in the absence of the main host. Infestations occur when birds abandon nests or direct contact with infected birds. The specimens were collected in a house in the urban area, with the help of a paper towel and kept under low refrigeration for later identification. The mites were identified as O. bursa, considered an important poultry pest. The present report is the first case of hematophagous parasitism in humans in the region of Vale do Taquari, Rio Grande do Sul, Brazil

TWO LEUCISM CASES IN Turdus rufiventris Vieillot, 1818 (BIRDS, TURDIDAE), IN SOUTHERN BRAZIL

We report two cases of leucism in Turdus rufiventris in southern Brazil. One mutant specimen was found in the urban area of Santa Cruz municipality, Rio Grande do Sul. It had totally white secondary flight feathers on the left wing, but normal color on all its body parts. The other specimen was found in a forest fragment in the rural region of Santa Maria municipality, RS. Presenting leucistic feathers on the head, neck, breast and tail.Dois casos de leucismo em Turdus rufiventris (Aves, Turdidae), no sul do Brasil. A presente comunicação reporta dois casos de leucismo em Turdus rufiventris, no Sul do Brasil. Um espécime mutante foi registrado em perímetro urbano, no município de Santa Cruz do Sul, Rio Grande do Sul, Brasil. O indivíduo apresentava rêmiges secundárias totalmente brancas na asa esquerda, e coloração normal no restante do corpo. O segundo espécime foi registrado num fragmento florestal, em área rural no município de Santa Maria, RS. A mutação afetava parte da cabeça, pescoço, peito e cauda