Aberrant colorations are not considered unusual events in nature. Recently, several cases have been reported in articles and/or notes of scienti c communication, thus contributing to the knowledge about these mutations in wildlife and reporting the aff ected species. Here, we bring two new records of wild birds with aberrant plumage in southern Brazil: one record of a leucistic Rufous-bellied  rush (Turdus ru ventris) individual and the rst record of progressive greying in the Chalk-browed Mockingbird (Mimus saturninus).

This research aimed at verifying the population fluctuation of the phytophagous spider mite Tetranychus urticae in four chrysanthemum (Chrysanthemum morifolium Ramat: Asteraceae) cultivars: Convington (Yellow - CVT), Kalamazoo (White - KLZ), White diamond (Cream - WD) and Royal Time (Pink - RT). Samples were taken every two weeks during two production cycles (March to April and August to October). In each sampling, leaves from 20 chrysanthemum plants were collected from each cultivar, one apical and one basal (40 leaves/cultivar sample). A total of 583 T. urticae individuals were collected, 41.9 % of the individuals in WD, 38.0 % in KLZ, 15.1 % in RT and 5.0 % in CVT. There were no significant differences in the populational density among the evaluated varieties (p > 0.05). Thus, the results indicated no significant differences in plant susceptibility to the phytophagous mite, suggesting that the four varieties are equally adapted to avoid T. urticae attack.