Sazonalidade de Nyssodrysina lignaria (Bates) (Coleoptera, Cerambycidae, Lamiinae), no Estado do Paraná, Brasil

Abstract

As part of two surveys in the state of Parana, Nyssodrysina lignaria (Bates, 1864) (Cerambycidae, Coleoptera) was sampled using malaise traps. One of the surveys was developed in eight different sites (Antonina, Sao Jose dos Pinhais, Colombo, Ponta Grossa, Telemaco Borba, Jundiai do Sul, Guarapuava e Fenix) from August 1986 to July 1987 and another one in five areas in different conditions of forest conservation, all located at Vila Velha, Ponta Grossa, from September 1999 to August 2000. The data indicate that the seasonality is congruent with the conditions found in temperate regions, with an activity peak in the spring-summer months. In the beginning of fall a second peak of abundance was observed, but not as high as in the spring-summer. These two peaks probably indicate the presence of two populations of N. lignaria associated to different fruit-ripening phases on diverse species of Inga Ph.Miller (Leguminosae, Mimosacea). The populational fluctuation observed in the various sites and the temperature and air humidity influences are discussed. Differences in the floristic conditions in Vila Velha (Ponta Grossa), as a cause of punctual differences in the populational fluctuation are also discussed. Finally, the results are compared with a study made with N. lignaria in Santa Maria, Rio Grande do Sul, Brazil.