Número de cerdas internas do órgão de Haller em larvas de Amblyoma cajennense (Fabricius, 1787) (Acari: Ixodidae) nos municípios de Silva Jardim e Itaguaí, RJ / Internal setae number of the larvae Haller’s organ of Amblyoma cajennense (Fabricius, 1787) (Acari: Ixodidae) from Silva Jardim and Itaguaí, RJ

RESUMO

Larvae of Amblyomma cajennense (Fabricius, 1787), were obtained under laboratory conditions. The larvae were killed in hot water, preserved in 70° ethanol and prepared in definitive whole mounts. Two hundred larvae were examined under brightjield microscopy with an immersion objective in order to analyze the variation of the number of internal setae of the right and left side of the Haller's organ chamber with the purpose of utilize them as chaetotaxy parameter for specific diagnosis.