San Jose scale
San Jose scale Scale insect introduced into California in about 1880 from e Asia. Now spread across the USA, these insects suck juices from trees and shrubs, often destroying the plants. Length: 2.5mm (0.1in). Family Diaspididae; species Quadraspidiotus perniciosus.
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Scale , scale1 / skāl/ • n. 1. each of the small, thin horny or bony plates protecting the skin of fish and reptiles, typically overlapping one another. 2. s… scale insect , scale in·sect • n. a small insect (suborder Homoptera) with a protective shieldlike scale. It spends most of its life attached by its mouth to a sing… Cosmoid Scale , Skip to main content
cosmoid scale Mercalli Scale , Mercalli scale An earthquake-intensity scale based on direct observation. Devised by G.Mercalli, it ranges from scales I (not felt) and II (felt by m… Scale (zoology) , scales The small bony or horny plates forming the body covering of fish and reptiles. The wings of some insects, notably the Lepidoptera (butterflies… Earthquake Magnitude , earthquake magnitude (earthquake intensity) The magnitude of an earthquake can be estimated from its destructiveness using the Mercalli scale. As thi…
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San Jose scale
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San Jose scale