ACTION DE QUELQUES INSECTICIDES SUR UNE ABEILLE SOLITAIRE : MEGACHILE PACIFICA PANZ. (HYMENOPTERA, MEGACHILIDAE)

Abstract

This paper is concerned with the results of tests carried out in controlled or semi-controlled conditions on males of the leafcutting bee Megachile pacifica with commercial insecticides: dialifor, endosulfan, phosalone, trichlorfon, oxydemeton-methyl and pirimicarb. Endosulfan and dialifor are the most toxic whether by residues or spray. Trichlorfon is hazardous in certain conditions of use. Phosalone is moderately toxic when food is provided to the bees. Oxydemeton-methyl is slightly toxic and pirimicarb is not toxic at all.