ECOLOGICAL ASPECTS OF CECIDIA ON BACCHARIS LINEARIS (R. et P.) PERS. IN CENTRAL CHILE

Abstract

In the National Park La Campana, sector Palmas de Ocoa (32°55’ S, 71°55’ W), some ecological aspects
of galls developed on Baccharis linearis were studied throughout a phenological cycle of the plant.
The following aspects were analyzed: general morphology of cecidia (shape, size, color), morphological
change of gall, biological aspects of gall-makers and parasitoids and relationships between the life cycle of
gall-makers insects and the phenology of plant.
Eight different kinds of galls were detected and described, six on twigs and two on leaves, three of which
were described for the first time.
Four types of galls analyzed were induced by Cecidomyiidae (Díptera), two by Psylloidea (Hemiptera), one
by Lepidoptera and one by Eriophyidae (Acari).