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Iheringia. Série Zoologia

Print version ISSN 0073-4721On-line version ISSN 1678-4766

Abstract

MACHADO, Vilmar  and  ARAUJO, Aldo Mellender de. The aggregation of Chauliognathus species (Coleoptera, Cantharidae) and its possible role for coexistence and mimicry. Iheringia, Sér. Zool. [online]. 2001, n.91, pp.29-32. ISSN 0073-4721.  http://dx.doi.org/10.1590/S0073-47212001000200002.

The relative population sizes of a species complex of Chauliognathus are reported, as well as their spatial distribution associated with different patches of food plants. Field work was done at Fazenda Santa Isabel, municipality of Guaíba, State of Rio Grande do Sul, Brazil. The results suggest that two mechanisms account for the reduction in food competition among the species involved: one is asynchrony in the appearance of the species in the area, and the other is aggregation in different patches of food plants. Since the species here reported show a similar colour pattern (yellow-black) the possibility of the occurrence of serial mimicry in this complex of species is dicussed.

Keywords : Chauliognathus; aggregation; competition; mimicry; Coleoptera.

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