What Is That Giant, Loud, Green Beetle? Meet SoCal’s Harmless Figeater Beetle
Updated: Jul 29
Every year like clockwork in late summer, Southern California skies buzz with metallic-green "flying bricks" who sound like tiny helicopters and seem to have zero steering control. Before you duck for cover, take a deep breath — you’ve just met the harmless Figeater Beetle (Cotinis mutabilis).
Clumsily colliding with human heads,
We claw their hair, while they flee with dread.
Shining and armored, we're the smallest of knights,
But grace is for someone with far better flight.
We're seeking the sweet stuff, a nice fruity treat.
We're as harmless as butterflies — just give us a few feet.
Okay, maybe poetry isn't my strong suit, but I absolutely adore these little green jewels! They're buzzing all over the city right now, striking terror in all who misunderstand them.
Where Did These Big Beetles Come From?
Figeater beetles — also called green fruit beetles or green fig beetles — are large, day-flying scarab beetles native to the Southwestern United States and Mexico. Getting up to an inch and a half long, they sport a velvety emerald-green back with a brown or tan trim, and a stunning, jewel-toned iridescent purple or bright green underside.
They emerge in mid-to-late summer (July through September) to eat, find mates, and lay eggs in the soil to restart the cycle.
Do Figeater Beetles Bite or Sting?
Nope! Figeater beetles do not bite, sting, or carry disease. They have zero interest in humans, nor do they possess any defensive weapons!
If one gets tangled in your hair, it’s not attacking you. They are just notoriously clumsy fliers. Because their hard wing covers (elytra) only open partially when they fly, maneuvering their heavy bodies around is tricky.
The worst damage a figeater can do is accidentally crash into your head and hurt its own wings.
Figeater Beetles vs. Japanese Beetles vs. Green June Beetles
A lot of people freak out thinking these big bugs are lawn-destroying invasive pests. Here is how to spot the difference:
Characteristic | SoCal Figeater Beetle (Cotinis mutabilis) | Japanese Beetle (Popillia japonica) | Eastern Green June Beetle (Cotinis nitida) |
Region | Native to Southwestern US & SoCal | Invasive in Central/Eastern US (Rare/trapped in CA) | Native to Central / Eastern US |
Size | Large (~1 –1.5 inches) | Small (~0.5 inch) | Medium (~0.5–1 inch) |
Appearance | Velvety green back, iridescent purple/green belly | Coppery wings with white tufts of hair along abdomen | Dull or shiny green back, variable brownish sides |
Garden Impact | Harmless to healthy plants; feeds on overripe fruit | Highly destructive to leaves, roots, and crops | Can damage lawns and turf |
Are They Bad for My Garden?
Unlike invasive lawn grubs, native figeater beetles are actually beneficial for the local ecosystem!
As Adults: They have weak mouthparts that can't easily bite through tough fruit skins. They mostly sip nectar and sap, or nibble on soft, overripe, or already-damaged figs, peaches, grapes, and tomatoes. They also help pollinate plants along the way! Yay!
As Larvae ("Crawlybacks"): Figeater grubs live underground in compost or rich organic soil. Instead of eating live plant roots like pest grubs do, they feed strictly on decaying plant matter, acting as nature’s organic recyclers. (And yes, the grubs are famous for wiggling along on their backs!)
Food for Wildlife: The adults and grubs serve as a highly nutritious protein source for native birds, lizards, and mammals.
How to Live Peacefully with Figeaters
If you have fruit trees and want to keep these beetles from feasting on your harvest, you don't need pesticides (which harm pollinators). Instead:
Harvest ripe fruit promptly.
Pick up overripe fallen fruit off the ground.
Keep compost piles turned or covered.
Next time one of these shiny green knights buzzes by on a warm summer day, try not to panic! Watch it closely as it lands — you just might get a glimpse of that gorgeous, iridescent metallic underside.
