In the current study, a new coccidian species (Protozoa: Apicomplexa: Eimeriidae), collected from the rufous-browed peppershrike Cyclarhis gujanensis Gmelin, 1789, is reported from Brazil. Isospora pitiguari n. sp. has oocysts, which are spherical to sub-spherical, 26.8 × 25.7 μm, with smooth, bilayered wall ~1.5 μm thick. Micropyle, oocyst residuum, and polar granule are absent. Sporocysts are...

ABSTR•1⁄2T.--Previous demonstrations of neighbor vs. non-neighbor discrimination in territorial male passerines have not permitted separation of habituation from associative learning as the basis of the response differences. A few male Rufous-sided Towbees (Pipilo erythrophthalmus) sing unusual songs resembling those of Carolina Wrens (Thryothorus ludovicianus), yet are able to defend territori...

Two new species of the feather mite genus Trouessartia (Analgoidea: Trouessartiidae) are described from passerine birds in Primorsky Krai (Russian Far East): calliope sp. n. Siberian Rubythroat Calliope (Linnaeus) and T. larvivorae Rufous-tailed Robin Larvivora sibilans (Swinhoe) (Passeriformes: Muscicapidae: Saxicolinae). Both close to swidwiensis Jablonska, 1968 associated with nightingales L...

Picicola donwebbi, a new species of chewing louse from the Rufous-sided Broadbill (Smithornis rufolateralis Gray, 1864) collected in Ghana, is herewith described and illustrated. This is the first species of Ischnocera recorded from the broadbills (Passeriformes: Eurylaimidae) and, based on morphology, is placed in the Picicola quadripustulosus species group recorded from the Pittidae (Passerif...

We herein report human dermatitis caused by the tropical fowl mite Ornithonyssus bursa (Berlese). The cases occurred in an apartment in a residential district of Porto Alegre City, State of Rio Grande do Sul, Brazil, where three members of the same family presented with pruritic lesions on the arms and legs. On inspecting the bathroom, several mites measuring approximately 1.0mm in length were ...

Eimeria divinolimai sp. n. from the rufous casiornis, Casiornis rufus (Passeriformes: Tyrannidae) was described in Brazil. Oocysts are subspherical 17.84 +/- 1.52 by 15.90 +/- 0.99microm (15.61-20.00 x 14.15-17.80). Shape-index (length/ width) of 1.12 +/- 0.05 (1.01-1.20). Wall smooth and bilayered, being yellowish outer and darker inner, 2.13 +/- 0.16 microm (2.00-2.38) thick. Micropyle and re...