Home / Scarab Beetles (Scarabaeidae) / Figeater Beetle (Cotinis mutabilis)

Figeater Beetle (Cotinis mutabilis)

The figeater beetle is a scarab beetle indigenous to southwestern U.S. and Mexico. These brightly colored beetles, mostly active during the day, are often spotted in the shade of trees bearing ripe fruit, which forms the bulk of its diet.

Figeater Beetle

Scientific Classification

  • Family: Scarabaeidae
  • Genus: Cotinis
  • Scientific name: Cotinis mutabilis

Physical Description and Identification

Adult

Size: 3.2 cm (1.25 in)

Color: They have a partially shiny green dorsal area, while their ventral region and legs appear iridescent green.

Other Characteristic Features: A loud buzzing noise, similar to that of a carpenter bee, can be heard when these beetles fly, attributed to their elytra being only partially open while in flight.

Cotinis mutabilis

Larva

Larvae are whitish with a dark head. They are “C” shaped, thick, and grow up to 5.1 cm. Though they have six legs, it does not help in movement. Instead, they propel themselves forward by crawling on their backs, using the bristles on their body as traction. This has earned them the nickname “crawly back”.

 They eat decaying organic matter, like compost and manure piles, organic mulch, and even plant roots.

Figeater Beetle Larvae

Pupa

The larvae mature and pupate in the spring.

Figeater Beetle Pupa

Egg

Eggs are laid in summer below the soil. They are 15 to 20 cm (6 to 8 in) long.

Quick Facts

Other namesGreen fruit beetle, fig beetle
Lifespan5 weeks
DistributionThe Southwestern United States and Mexico
HabitatHome gardens and orchards
Seasons activeLate Spring to mid Summer
PredatorsBirds
Host plantsTrees with soft-skinned fruits like berries, grapes, ripe figs, peaches, plums, and tomatoes
Diet of adultsSweet food, like leaves, flowers, and sap of certain plants and ripe or overripe fruit
Green Fruit Beetle

Identifying the Damage Caused by Them

As they cannot eat fruit with tough skins and prefer ripe fruit, the damage done by these beetles is minor. However, in extreme cases, a swarm of them can attack an entire crop and defoliate it.

Did You Know

  • Since they fly only using their hindwings, they are clumsy and occasionally bump into objects mid-flight.
  • It is often compared with the green June beetle, but the latter is smaller and found only in the eastern U.S. They are also mistaken for Japanese beetles, which also inhabit the eastern U.S.
Fig Beetle

Image Source: biolib.cz, i.pinimg.com, bugguide.net, i.imgur.com, live.staticflickr.com, i.pinimg.com

The figeater beetle is a scarab beetle indigenous to southwestern U.S. and Mexico. These brightly colored beetles, mostly active during the day, are often spotted in the shade of trees bearing ripe fruit, which forms the bulk of its diet.

Figeater Beetle

Physical Description and Identification

Adult

Size: 3.2 cm (1.25 in)

Color: They have a partially shiny green dorsal area, while their ventral region and legs appear iridescent green.

Other Characteristic Features: A loud buzzing noise, similar to that of a carpenter bee, can be heard when these beetles fly, attributed to their elytra being only partially open while in flight.

Cotinis mutabilis

Larva

Larvae are whitish with a dark head. They are “C” shaped, thick, and grow up to 5.1 cm. Though they have six legs, it does not help in movement. Instead, they propel themselves forward by crawling on their backs, using the bristles on their body as traction. This has earned them the nickname “crawly back”.

 They eat decaying organic matter, like compost and manure piles, organic mulch, and even plant roots.

Figeater Beetle Larvae

Pupa

The larvae mature and pupate in the spring.

Figeater Beetle Pupa

Egg

Eggs are laid in summer below the soil. They are 15 to 20 cm (6 to 8 in) long.

Quick Facts

Other namesGreen fruit beetle, fig beetle
Lifespan5 weeks
DistributionThe Southwestern United States and Mexico
HabitatHome gardens and orchards
Seasons activeLate Spring to mid Summer
PredatorsBirds
Host plantsTrees with soft-skinned fruits like berries, grapes, ripe figs, peaches, plums, and tomatoes
Diet of adultsSweet food, like leaves, flowers, and sap of certain plants and ripe or overripe fruit
Green Fruit Beetle

Identifying the Damage Caused by Them

As they cannot eat fruit with tough skins and prefer ripe fruit, the damage done by these beetles is minor. However, in extreme cases, a swarm of them can attack an entire crop and defoliate it.

Did You Know

  • Since they fly only using their hindwings, they are clumsy and occasionally bump into objects mid-flight.
  • It is often compared with the green June beetle, but the latter is smaller and found only in the eastern U.S. They are also mistaken for Japanese beetles, which also inhabit the eastern U.S.
Fig Beetle

Image Source: biolib.cz, i.pinimg.com, bugguide.net, i.imgur.com, live.staticflickr.com, i.pinimg.com

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