ant lion
US /ˈænt ˌlaɪ.ən/
UK /ˈænt ˌlaɪ.ən/

1.
formicaleone
the larva of an insect, which digs a conical pit in sand and lies in wait at the bottom for ants and other small insects to fall in
:
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The children were fascinated watching an ant lion dig its trap.
I bambini erano affascinati a guardare una formicaleone scavare la sua trappola.
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You can often find ant lion pits in sandy, dry areas.
Si possono spesso trovare le fosse delle formicaleone in aree sabbiose e secche.