Rubber-plantation
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Scutellista caerulea
Scutellista caerulea is a small parasitoid wasp in the family Pteromalidae, widely used as a biological control agent against soft scale insects (Coccoidea). The species is an ectoparasitoid, with larvae feeding externally on host eggs concealed beneath the adult scale insect's body. Laboratory studies have established optimal rearing conditions at 30–33°C with 12–14 hours of daylight and supplementary carbohydrate nutrition for adults. The species demonstrates particular effectiveness in tropical environments where other parasitoids may fail.