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The mirid predators M. pygmaeus and N. tenuis - Behaviour and distribution on tomato crops
graph., photo., anglais
Nesidiocoris tenuis is difficult to control without affecting Macrolophus pygmaeus, as it is very similar in appearance to this beneficial insect. This article reviews the knowledge acquired on the biology and behavior of these two mirid bugs, particularly on N. tenuis. The two bugs do not forage on the same strata of the tomato plant, as N. tenuis is mainly found on the upper part, and M. pygmaeus in the middle of the plant. This difference becomes more pronounced when temperatures increase in the greenhouse. This behavior can be useful for applying localized control treatments to N. tenuis with minimal impact on M. pygmaeus. A warm climate favors the development of N. tenuis, contrary to M. pygmaeus that has a lower temperature threshold, which could explain the decline in M. pygmaeus populations observed in summer.