英文を教えてください。
Ecology（：David Burnie)からの引用です。
In the 1950s, a rabbit disease called myxomatosis swept across Britain. As the number of rabbits plummeted, the grass that they had once nibbled short began to grow lush and tall.
The ground's surface temperature fell--just slightly--because the tall grass screened more of the sunshine. This small drop in temperature was enough to create problems for a particular species of ant, one which relied on the warmth of the rabbit-nibbled turf.
As time went by, the ant started to disappear. As it declined, so too did a particularly beautiful species of butterfly--the large blue. The large blue's caterpillar feeds not on leaves, but on the grubs of this one species of ant.
【It has come to look so much like an ant grub itself that the ants are tricked into carrying it into their nests, where it devours their offspring.】
Without the ants, the caterpillar cannot survive, and by the last 1970s the butterfly had become extinct in Great Britain.
【】の個所について教えてください。
It has come to look so much like an ant grub itself that the ants are tricked into carrying it into their nests, where it devours their offspring.
この英文はＩｔ～that構文だと思うのですが、
so～thatの形も見られ、訳し方がよくわかりません。
look so much like an ant grub itself
（非常に一匹のアリの幼虫自身のように見える・・？芋虫がアリの幼虫を装うというようなことですか？）
アリたちが騙されて彼らの巣（そこで青い蝶の芋虫は彼らの子供たちを食べてしまうのだが）に青い蝶の芋虫を運ばされるほど、（芋虫は）非常に一匹のアリの幼虫自身のように見えるようになった・・・・？
どのように訳すのでしょうか？
＊後半は、芋虫が食べる葉っぱがなくなってしまったので、代わりにアリの幼虫を食べるようになった。芋虫は自分をアリたちの巣に持ち込ませるようにして、彼らの幼虫を更に食べるようになり、アリがいなくなってしまい、蝶も絶滅してしまった、という内容でしょうか？
