What does the name "Arbeh" mean? What was their character?

Locusts are common in eastern countries. How would Pharaoh know that it was a plague sent by Hashem?

Remarkably, prior to the Plague of Locusts, Pharaoh's own servants begged him to change his stance and send out the Bnei Yisrael -- and even Pharaoh tentatively agreed. Why specifically now?

Why did Hashem bring the Plague of Locusts upon the Egyptians?

Barad and Arbeh were essentially the same Makah, split into two stages. (Each destroyed the Egyptians' food supply; the Arbeh merely finished off what the Barad had left over). If so, why was Makas Arbeh necessary? Why not strike all the crops at once?

Aside from the crops and plants, what else did the locusts devour?

Why does the Torah not record that at the plague's conclusion, the locusts died (or that the wild beasts in the plague of Arov died - as it does regarding the frogs)?