Greenhouse-biological-control

Guides

• Cryptolaemus montrouzieri

  Mealybug Destroyer, Mealybug Ladybird

  Cryptolaemus montrouzieri is a small ladybird beetle native to eastern Australia, widely used as a biological control agent against mealybugs and scale insects in agricultural and horticultural systems globally. Adults are approximately 6 mm long with dark brown elytra and orange-brown head, pronotum, and appendages. Larvae reach 14–15 mm and are covered in white waxy filaments that provide aggressive mimicry of their mealybug prey, potentially protecting them from ant aggression. The species has been introduced to numerous regions including California (1891), Europe, and New Zealand for classical biological control of citrus mealybug and related pests.

  biological-controlmealybug-predatorclassical-biological-controlaggressive-mimicryintegrated-pest-managementcitrus-pest-managementgreenhouse-biological-controlAustralian-nativeCoccinellidaepredatory-beetle

• Nabis

  damsel bugs

  Nabis is a genus of damsel bugs in the family Nabidae, comprising predatory true bugs found worldwide. Members are small, slender insects typically under 12 mm in length, recognized by their raptorial front legs adapted for capturing prey. They are primarily nocturnal predators that use a combination of ambush and active hunting strategies to subdue insects larger than themselves. The genus is economically significant as a biological control agent in agricultural systems, particularly in cotton and greenhouse crops.

  predatorbiological-controlagricultural-pest-managementnocturnalHemipteraNabidaegeneralist-predatorintegrated-pest-managementcotton-pestsgreenhouse-biological-control

• Orius insidiosus

  insidious flower bug, minute pirate bug

  Orius insidiosus, commonly known as the insidious flower bug or minute pirate bug, is a predatory true bug widely distributed across the Americas. Adults are approximately 2–3 mm in length, black with distinctive white wing markings. The species is an important biological control agent, mass-reared commercially for management of thrips, aphids, mites, and other agricultural pests in greenhouses and field crops. Both nymphs and adults are predatory, though they also feed on pollen and plant tissues, making them zoophytophagous. Despite their beneficial role, they occasionally bite humans, causing disproportionately painful but harmless irritation.

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