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Delphastus System 100 (30 ml)

Delphastus System 100 (30 ml)

$49.99
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Delphastus is a specialized whitefly predator in the lady beetle family. The White Fly Predatory Beetle is a native beetle often found associated with high populations of various species of White Fly. Adults are small, shiny, and are approximately 1.3 - 1.4 mm in length (1/15th inch). Adults are dark brown to black, hemispherical beetles; females have reddish yellow heads, lighter color than males. Development is about a month long and females lay 3 - 4 eggs per day. Eggs are transparent and are twice as long as they are wide. It is mandatory for mated females to consume 100 - 150 eggs a day in order to oviposit. Each larval stage takes about 3 - 5 days to complete, and the pupil stage takes 6 days. Larvae are elongated, cream colored, covered with short fine hairs and have conspicuous legs. The pupae are more yellow and circular. On cloudy and twilight days, adults are most noticeable. The adult beetles fly, while larvae are slow moving and travel from plant to plant on leaves. The complete life cycle takes 21 - 25 days. Eggs are yellowish ovals, laid on end, in clusters on the underside of leaves. Females lay 2 - 6 eggs per day, and can lay over 300 eggs in their 65-day lifetime. Females must eat 100- 150 whitefly eggs per day to initiate and sustain egg laying. Larvae feed for 7 - 10 days. Older larvae migrate down the plant to pupate. Pupae are often found clustered along leaf veins on the undersides of leaves. Adults emerge from pupae in 6 days. Adults can eat 150 - 640 whitefly eggs or 11 large larvae per day. A single beetle can consume as many as 10,000 whitefly eggs or 700 larvae during its lifetime.
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