an farmers were at the mercy of insects that were destroying their crops. They prayed to Virgin Mary for help. The story goes that soon after the ladybugs came, ate the insects and saved the crops!
The colorful beetles were named “The Beetles of Our Lady” and eventually came to be known as “Lady Beetles” in Europe and “Ladybugs” in the U. S.
Ladybugs are predators(捕食性动的) that cruelly kill hundreds of tiny insects called aphids every day. The aphids suck juices out of plants. A single ladybug can consume as many as 50 aphids a day! to come and eat out the plant's invaders.
Besides their bright yellow, red and black colors that warn away predators, nature has blessed ladybugs with another defense mechanism. These colorful beetles can “play dead” by turning over and pulling their legs up. A small amount of foulsmelling blood flows out from their legs, which does a pretty good job of driving away the predators. Once danger passes, they resume normal life!
If there is one animal that can take down the ladybug, it is a tiny wasp about the width of a fingernail. When ready to lay eggs, the wasp injects the ladybug with an egg through her stinger(刺). When the egg hatches, g, draining the life from it. On the outside, the ladybug continues to hunt aphids, while getting eaten out from the inside by a wasp. The more the ladybug feeds, the quicker and bigger the wasp gets, stealing the nutrients from the ladybug.
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