Revelation 9:7

And the shapes of the locusts were like unto horses prepared unto battle; and on their heads were as it were crowns like gold, and their faces were as the faces of men.

Cross-references

Revelation 4:4 has elders with golden crowns—in contrast, the locusts have golden crowns as a parody of heavenly authority.

Joel 2:4 also compares locusts to horses in battle—the same vivid imagery used here for the demonic locusts.