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Stethorus punctillum is a small black ladybug, around 1.5 mm long, with little yellow antennae. The larvae are dark in colour. The eggs are oval-shaped and yellow, generally laid near pest mite colonies.
The larvae and adults are predators that feed on all stages of several mite species, including the two-spotted spider mite, spruce spider mite, southern red mite and European red mite.
This little ladybug has proven to be excellent at controlling pest mite infestations. It flies with ease and is able to detect sources of infestation. Unlike Neoseiulus fallacis and Phytoseiulus persimilis, it can be used in high-temperature, low-humidity conditions.
|General||See surface||100 adults / source of infestation or 10 adults / infested plant||week||for 3 to 4 weeks|
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The adult and larva of convergent lady beetle can eat 10 to 170 aphids per day.
Source : Réseau de surveillance du puceron du soya, carnet de champ du dépisteur (2010).