The life cycle of butterflies チョウチョの一生


美味しいです。(^.^) けどイタリアンパセリは、ん?チョウチョのためか? は、はい、90%YESです。
キアゲハが必ず卵を産み付ける!そして幼虫が食べる!チョウチョになるのを見せてくれる!感動で涙する(T_T) の日々。


First stage: Egg

A butterfly starts life as a very small, round, oval or cylindrical egg.

Butterfly eggs are usually laid on the leaves of plants.


Second stage: Larva (Caterpillar)

When the egg hatches, the caterpillar will start his work and eat the leaf they were born onto. This is really important because the mother butterfly needs to lay her eggs on the type of leaf the caterpillar will eat – each caterpillar type likes only certain types of leaves.

larva: 〔昆虫の〕幼虫、〔変態する動物の〕幼生

caterpillar: イモムシ、毛虫

Caterpillars need to eat and eat so they can grow quickly. When a caterpillar is born, they are extremely small. When they start eating, they instantly start growing and expanding.
Their exoskeleton (skin) does not stretch or grow, so they grow by “molting” (shedding the outgrown skin) several times while it grows.

(幼虫の外骨格(皮)は伸長や成長しないので、幼虫は “脱皮” することによって成長する。これを成長過程で数回繰り返す。)


Third stage: Pupa (Chrysalis)


The pupa stage is one of the coolest stages of a butterfly’s life. As soon as a caterpillar is done growing and they have reached their full length/weight, they form themselves into a pupa, also known as a chrysalis. From the outside of the pupa, it looks as if the caterpillar may just be resting, but the inside is where all of the action is. Inside of the pupa, the caterpillar is rapidly changing.
Now, as most people know, caterpillars are short, stubby and have no wings at all. Within the chrysalis the old body parts of the caterpillar are undergoing a remarkable transformation, called ‘metamorphosis,’ to become the beautiful parts that make up the butterfly that will emerge. Tissue, limbs and organs of a caterpillar have all been changed by the time the pupa is finished, and is now ready for the final stage of a butterfly’s life cycle.

metamorphosis: 変態


Forth stage: Adult butterfly

monarch-emerging<<Butterfly Emerging from a Chrysalis

Finally, when the caterpillar has done all of its forming and changing inside the pupa, if you are lucky, you will get to see an adult butterfly emerge.  When the butterfly first emerges from the chrysalis, both of the wings are going to be soft and folded against its body. This is because the butterfly had to fit all its new parts inside of the pupa.

emerge: 表面に出てくる、現れる

 As soon as the butterfly has rested after coming out of the chrysalis, it will pump blood into the wings in order to get them working and flapping – then they get to fly.  Usually within a three or four-hour period, the butterfly will master flying and will search for a mate in order to reproduce.



 When in the fourth and final stage of their lives, adult butterflies are constantly on the look out to reproduce and when a female lays their eggs on some leaves, the butterfly life cycle will start all over.




IMG_2582うちで幼虫から成虫になった1匹目     IMG_2581















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