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Delphastus pusillus
''Delphastus pusillus'' is a small ladybird beetle which preys on all species and stages of whitefly, but prefers eggs and nymphs. The adults are small ( in), shiny, black beetles. Newly emerged adults are pale-brown to almost white. They eventually turn black with a brown head. The eggs are 0.2 mm long, clear and twice as long as they are wide. The elongate larvae are pale yellow.
==Life cycle==
Female beetles live for about 2 months, during which time they lay 3 to 4 eggs per day; male beetles live for 1½ months. The females generally lay their eggs within clusters of whitefly eggs, which makes it easier for the young larvae to find a food source. Each instar lasts 1½–3 days. ''D. pusillus'' pupates on lower leaves, in leaf litter, or in other protected locations, often in groups. The pupal stage lasts approximately 6 days. Development from egg to adult takes approximately 3 weeks at 80–85°F.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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