F
Species Profile

Figeater Beetle

Cotinis mutabilis

The buzzing emerald of ripe fruit
Virginie Merckaert/Shutterstock.com

Figeater Beetle Distribution

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figeater beetle

At a Glance

Wild Species
Also Known As Fig beetle, Fig eater, Fig-eating beetle, Green fruit chafer, Green chafer, Escarabajo de la higuera, Escarabajo verde
Activity Diurnal
Lifespan 12 years
Status Not Evaluated
Did You Know?

Adults are typically about 20-33 mm long (about 2-3.3 cm), with a velvety metallic-green back and pale/yellowish margins along the wing covers.

Scientific Classification

A large, robust scarab (“flower chafer” type) with metallic green dorsum; adults often fly loudly and feed on soft or overripe fruits (including figs) and sap flows. Larvae are typical scarab grubs living in soil/compost and feeding on decaying organic matter.

Kingdom
Animalia
Phylum
Arthropoda
Class
Insecta
Order
Coleoptera
Family
Scarabaeidae
Genus
Cotinis
Species
Cotinis mutabilis

Distinguishing Features

  • Metallic green to greenish-bronze adult coloration; underside often with iridescent tones
  • Stout scarab body; strong, noisy flight
  • Adults commonly visit ripe/fermenting fruit and sap
  • Belongs to flower chafers (Scarabaeidae: Cetoniinae), which often feed on fruit/nectar/pollen

Physical Measurements

Length
1 in (1 in – 1 in)

Appearance

Primary Colors
Secondary Colors
Skin Type Hard, glossy, heavily sclerotized beetle cuticle with rigid elytra (protective wing covers) over membranous hindwings; surface often appears polished/metallic due to structural reflection.
Distinctive Features
  • Adult size commonly reported about 2.0-2.8 cm in length (large, robust 'flower chafer' scarab form; oval, domed dorsum).
  • Pronotum and elytra typically bright metallic green; ventral surface often shows bronzy/coppery metallic tones.
  • Antennae end in lamellate clubs (fan-like plates typical of Scarabaeidae).
  • Head and forelegs adapted for clambering into soft fruit; adults are frequently found feeding on soft/overripe fruit (notably figs) and at sap flows.
  • Adults are strong, noisy fliers (audible buzzing) and are primarily active in warm daylight hours; they often fly in midsummer through early fall in the Southwestern U.S. and Mexico range.
  • Larvae are classic C-shaped scarab grubs (whitish/cream body with darker head capsule) living in soil/compost and feeding on decaying organic matter; this life stage contrasts strongly in appearance and habitat with the metallic adult.

Sexual Dimorphism

Sexual dimorphism is present but subtle; males and females are similar in overall metallic green coloration and general body shape. Differences are usually modest and involve body proportions and ventral/terminal abdominal shape rather than conspicuous horns or markings.

  • Often slightly more slender/streamlined body profile; terminal abdominal/pygidial and ventral contours may be more concave/modified compared with females (used in mating).
  • In some individuals, foreleg/tarsal structures appear a bit more robust (subtle; not a dramatic external trait).
  • Often slightly broader abdomen (especially when gravid), with terminal abdominal segments appearing fuller/rounder than in males.
  • Overall coloration typically the same as males; no consistent female-only color pattern.

Did You Know?

Adults are typically about 20-33 mm long (about 2-3.3 cm), with a velvety metallic-green back and pale/yellowish margins along the wing covers.

It's a "fruit-and-sap" beetle: adults commonly feed on soft/overripe fruit (including figs), fermenting juice, and sap flows.

Like other flower chafers (Scarabaeidae: Cetoniinae), it can fly with the hardened wing covers (elytra) mostly closed-hindwings do the work.

The buzzing flight is loud and fast; many people mistake it for a bumblebee at first glance and sound.

Larvae are classic C-shaped scarab grubs that live in soil/leaf litter/compost, feeding mainly on decaying plant material and helping break it down.

The life cycle is usually about 1 year in warm climates (sometimes longer where conditions are cooler or food is limited), with larvae doing most of the growing underground.

It has close look-alikes: the Eastern Green June beetle (Cotinis nitida) is similar but occurs mainly in the eastern U.S.; range is a key clue.

Unique Adaptations

  • Velvety, metallic green dorsal surface: structural coloration and a matte sheen can reduce glare while still providing bright, species-recognition signaling.
  • Cetoniine flight design: hindwings deploy for flight while the elytra remain mostly closed, helping protect the abdomen during rapid maneuvering.
  • Lamellate antennae: leaf-like antennal clubs can open to greatly increase surface area for detecting fruit odors/fermentation volatiles and pheromones.
  • Powerful digging legs: robust, spined forelegs aid in burrowing and navigating soil/compost during the larval and pupal stages.
  • Grub locomotion trait (common in flower chafers): larvae can move efficiently through loose organic matter and are well-adapted to life in compost-rich habitats.

Interesting Behaviors

  • Diurnal foraging: adults are most active in daylight, visiting fallen or damaged fruit, fermenting juice, and sap runs.
  • "Crash-landing" tendency: strong fliers that often barrel into foliage or fruit clusters when startled or competing at food sources.
  • Crowding at food: multiple adults may gather on the same fruit/sap patch, jostling to feed on the softest tissue.
  • Seasonal emergence: adults are most often noticed in the warm months (commonly summer into early fall in much of the Southwest), coinciding with ripening fruit.
  • Larval compost life: grubs concentrate in rich organic substrates (compost piles, mulched beds, leaf litter) where microbial decay has softened plant matter.
  • Defense-by-distraction: when handled, adults may kick, buzz, or play dead briefly; the slick, hard body and loud flight help deter predators.

Cultural Significance

Figeater beetle, or Green fruit beetle (Cotinis mutabilis), is common in the Southwestern U.S. and northern Mexico. Adults eat late-summer fruit and compost; larvae break down dead plant matter. Scarabaeidae scarabs are cultural symbols (ancient Egypt).

Myths & Legends

Ancient Egypt's scarab mythology (family-level association): the scarab was linked to the god Khepri, who rolled the sun across the sky; scarab amulets symbolized rebirth and protection in life and the afterlife.

Scarab amulets and "heart scarabs" (ancient Egyptian funerary tradition): scarab-shaped seals and amulets were placed with the dead as protective objects and as symbols tied to renewal and transformation.

Name-origin tradition (historical association): the common name "figeater" comes from long-noted adult feeding on soft fruits-especially figs and other thin-skinned, sugary fruits that ferment quickly in heat.

Conservation Status

NE Not Evaluated

Has not yet been evaluated against the criteria.

Population Unknown

Life Cycle

Birth 30 larvas
Lifespan 12 years

Lifespan

In the Wild
11–24 years
In Captivity
12–30 years

Reproduction

Mating System Promiscuity
Social Structure Aggregation Group
Breeding Pattern Transient
Fertilization Internal Fertilization
Birth Type Internal_fertilization

Cotinis mutabilis (figeater/green fruit beetle) mate when males and females meet at temporary feeding groups on fruit or sap. Adults mate, and females lay eggs in soil or compost. Larvae eat decaying plant matter. No parental care or helpers; many mates.

Behavior & Ecology

Social Congregation Group: 1
Activity Diurnal
Diet Detritivore Overripe/fermenting figs and other soft fruits
Seasonal Hibernates

Temperament

Non-aggressive toward conspecifics outside of brief mating interactions; no parental care or cooperative defense reported.
Resource-driven tolerance: multiple adults may feed in close proximity on fruit/sap with limited direct interaction (loose aggregation).
Startle/escape-biased: when disturbed, adults typically take flight rapidly; the loud flight buzz is a byproduct of wingbeat/elytral airflow rather than a directed threat display.
Sexual competition is mainly via scramble competition at food/mate encounter sites rather than prolonged combat (general cetoniine pattern; species-specific combat displays are not well quantified for C. mutabilis).
Life-history context: larvae (white grubs) develop in soil/compost and feed on decaying organic matter; this stage is generally non-social aside from incidental crowding in rich substrates (Richter, 1966; Ratcliffe & Paulsen, 2008).

Communication

No true vocalizations are known for Cotinis mutabilis; adults can produce audible flight buzzing during diurnal activity Incidental sound, not confirmed as intraspecific signaling
Chemical communication: mate finding in scarab beetles commonly involves sex pheromones and close-range chemical cues; Cotinis spp. are generally presumed to use pheromonal attraction, but specific pheromone chemistry for C. mutabilis is not well established in widely cited primary literature.
Olfactory orientation to host resources: adults are strongly attracted to volatile cues from fermenting/overripe fruit and sap flows, which can indirectly concentrate individuals and increase encounter rates Behavior widely reported for the species in applied/natural history sources; summarized in Ratcliffe & Paulsen, 2008
Tactile communication during courtship/mating: contact-based cues Antennae/legs) are used at close range for alignment and copulation, consistent with scarab beetle mating behavior (general Coleoptera/Scarabaeidae pattern
Visual/flight activity cues: diurnal flight and conspicuous movement on fruit may facilitate incidental encounters; no evidence of structured visual displays has been quantified for this species.

Habitat

Biomes:
Mediterranean Desert Hot Temperate Forest Temperate Grassland Tropical Dry Forest Savanna
Terrain:
Plains Valley Hilly Coastal Riverine
Elevation: Up to 6889 ft 9 in

Ecological Role

Detritivore/decomposer (larvae) and frugivorous/sap-feeding adult; contributes to decomposition and nutrient cycling but can be an orchard/garden fruit pest when adults aggregate on ripening fruit.

Breakdown of decaying organic matter and accelerated nutrient recycling (larval feeding in soil/compost) Soil mixing/aeration via larval burrowing and movement through compost/soil Potential incidental pollination when adults visit flowers for nectar/pollen Food-web support as prey for insectivorous birds, mammals, reptiles, and predatory invertebrates (as larvae and adults)

Diet Details

Other Foods:
Overripe soft fruits Tree sap Nectar and pollen from flowers Decaying plant material in soil Compost Aged manure-enriched soils

Human Interaction

Domestication Status

Wild

Cotinis mutabilis (figeater or green fruit beetle) is a wild scarab from the southwestern U.S. and Mexico with no domestication history. People sometimes keep adults briefly for display or education, but there is no selective breeding. Scarabaeidae/Cetoniinae beetles can be compost decomposers (larvae), fruit pests (adults), display pets, and flower visitors.

Danger Level

Low
  • No sting/venom; does not blood-feed. Main issue is nuisance/startle response due to loud, fast flight and clumsy collisions around fruit trees.
  • Possible minor skin scratches or pinches if handled roughly (scarab legs/tarsi can be spiny), but injuries are typically superficial.
  • Rare allergy risk: handling insects (or airborne fragments) can provoke allergic reactions in sensitive individuals.

As a Pet

Suitable as Pet

Legality: Figeater beetles (Cotinis mutabilis) are usually allowed as pets in their native area, but rules apply to moving live insects between states or countries and to releasing them. Check local and USDA rules first.

Care Level: Easy

Purchase Cost: Up to $25
Lifetime Cost: $20 - $100

Economic Value

Uses:
Minor agricultural pest (adult fruit feeding) Beneficial decomposer (larvae in compost/soil organic matter) Education/outreach specimen Nuisance insect (adult buzzing flights around ripe fruit/trees)
Products:
  • Potential crop loss on soft/overripe fruits (e.g., figs and other thin-skinned/soft fruits) when adults aggregate at feeding sites (documented in extension pest guidance for the species; e.g., UC ANR/UC IPM materials on green fruit beetle, Cotinis mutabilis).
  • Ecosystem service: larval processing of decaying organic material in soil/compost (commonly noted for C. mutabilis larvae in extension descriptions; larvae are typically associated with compost/manure/decaying plant matter rather than root feeding).
  • Limited hobby/pet trade value as a display beetle (live adults collected locally; no established commercial production is typical for this species).

Relationships

Predators 8

Western scrub-jay Aphelocoma californica
American crow Corvus brachyrhynchos
European starling
European starling Sturnus vulgaris
Greater roadrunner
Greater roadrunner Geococcyx californianus
Raccoon
Raccoon Procyon lotor
Striped skunk Mephitis mephitis
Western fence lizard
Western fence lizard Sceloporus occidentalis
Chinese mantis Tenodera sinensis

Related Species 7

Green June beetle
Green June beetle Cotinis nitida Shared Genus
Texas flower scarab Cotinis texana Shared Genus
Pale desert flower scarab Cotinis pallida Shared Genus
Smooth flower scarab Cotinis laevis Shared Genus
African fruit beetle Pachnoda sinuata Shared Family
Grapevine beetle
Grapevine beetle Pelidnota punctata Shared Family
Japanese beetle
Japanese beetle Popillia japonica Shared Family

Ecological Equivalents 4

Animals that fill a similar ecological role in their ecosystem

Green June beetle
Green June beetle Cotinis nitida Very similar adult niche. Day-flying cetoniine scarab with a loud flight; adults feed on soft or overripe fruit and sap flows. Like C. mutabilis, larvae are soil/compost grubs that consume decaying organic matter, and both species commonly develop in rich organic substrates.
Grapevine beetle
Grapevine beetle Pelidnota punctata Another large scarab often associated with vines and fruiting plants; adults commonly occur on grapes and other fermenting or soft plant resources. Ecological overlap is strongest in orchards and vineyards, where adults exploit damaged or ripe fruit and plant exudates.
Carpophilus sap beetle Carpophilus hemipterus Not closely related but strongly niche-overlapping. Adults aggregate on fermenting, overripe, or damaged fruit and can co-occur with figeater beetles on fallen figs and stone fruit; both are attracted to sugar- and yeast-fermentation volatiles.
Western yellowjacket Vespula pensylvanica Common co-forager on overripe fruit and tree sap flows in late summer. Behaviorally overlaps with C. mutabilis adults at sap runs and fallen fruit, where both exploit concentrated carbohydrates.

Figeater beetles only open their wings partially when they fly. 

Summary

The figeater beetle is a type of scarab beetle native to North America. The beetle is most common in the southwestern region of the United States and Mexico. These brightly colored beetles are diurnal, i.e., more active during the day than at night. They often fly into people as they make their way clumsily through the hair. Their clumsy flight is due to their inability to open their elytra fully when they fly. Figeater beetles are herbivorous. They feed on ripe fruits and may become a severe agricultural pest if they infest a field in large numbers. 

Figeater Beetle Species, Types, and Scientific Name

Figeater beetle is the common name of Cotinis mutabilis, a beetle in the family Scarabaeidae. Insects in this family are also called scarabs or scarab beetles. Scarabs are stout-bodied insects known for their bright metallic colors and clubbed antennae. The scarab beetle family is a large one, with at least 30,000 species of beetles found all over the world. 

Figeater beetles are also called fig beetles or green fruit beetles. Their common name and nicknames reference their tendency to feed on ripe soft-bodied fruits, including figs, tomatoes, berries, and grapes. 

The figeater beetle’s diet is consistent with the feeding habit of beetles in the subfamily Cetoniinae where it belongs. This group of beetles with at least 4000 members are also commonly called flower chafers. Insects in this group feed on pollen, nectar, flower petals, and fruits. 

People often compare the green fruit beetle to the green june beetle, which has a similar appearance. However, the june beetle is typically smaller, and its range is limited to the eastern parts of the United States. Some people also tend to mistake them for japanese beetles native to the eastern United States. 

Appearance: How to Identify Figeater Beetle

Figeater beetles have the classic scarab beetle appearance. They’re stout-bodied with hard elytra covering their thorax and abdomen. Adults can grow to lengths of up to 1.2 inches (3.2 cm) on average. Figeater beetles are pretty attractive. They are typically semi-glossy green on the top, while their undersides and legs are usually a brilliant iridescent green color.

You’re more likely to find this beetle during the day when they’re more active. They’re often seen congregating in the shade of fruit trees. One prominent distinguishing feature of this group of beetles is the loud buzzing noise they make when they fly. This is due to the fact that their elytras are only partially opened when they’re in flight. 

The larvae of fig beetles are also called “crawly back .” This nickname is due to the unique way they crawl. Instead of moving with their legs, they tend to propel their body forward by crawling on their backs. They have bristles on their body, which they use for traction. The whitish beetles are C-shaped like the larvae of other scarab beetles. They can grow to lengths of up to 5.1 cm. 

Habitat: Where to Find Figeater Beetle

The figeater beetle is native to the United States and Mexico. They’re most common in moist locations in the southwestern area of the United States. However, their range has been expanding over the past few years. They have become more common near human populations, making their homes in gardens, organic mulch, compost piles, and anywhere their larvae can easily access decomposing organic matter. 

Diet: What Do Figeater Beetles Eat?

Fig beetles and other members of the subfamily Cetoniinae are known as fruit chaffers. This is due to their tendency to feed on pollen, nectar, and petals of different plants. As their name suggests, figeater beetles eat figs and other ripe soft-skinned fruits. Their diet primarily consists of berries, grapes, peaches, and tomatoes. They prefer ripe and over-ripe fruits because fruits with tough skins are often too hard for them to bite into. In addition, the larvae of fig beetles feed on decaying organic matter, such as organic mulch, compost, and plant roots. 

What Eats Figeater Beetle?

Figeater beetles don’t have any defense mechanisms and are clumsy fliers. As a result, they’re easy prey for birds, toads, lizards, rodents, and even other insects that prey on beetles. Digger wasps and some types of nematodes may also feed on fig beetle grubs in check. Raccoons, possums, and other rodents may also dig up the large larvae for food. 

Prevention: How to Get Rid of Figeater Beetle

Although figeater beetles feed on garden fruits, they’re hardly problematic because they only do minor damage in most cases. However, in some cases, an infestation can go out of hand, with the beetles attacking plants in large numbers and causing severe damage. 

If fig beetles or their larvae are causing a problem in your garden, the best way to defend your plants against them is to maintain a healthy garden. Adequate care for your plants will help minimize damage to your plant. Good irrigation can also help keep the larvae population under control since the grubs cannot survive for long in wet soil. Tiling the ground before planting in fall or early spring also exposes the grubs to the surface, where they can quickly get eaten by predators or die due to exposure to sunlight. 

Overripe fruits are their favorite. To prevent adults from damaging your fruit, it’s best to pick fruits as soon as they ripen. Using pesticides and other chemical controls is not recommended for fig beetles. This can affect other beneficial insects in your garden. 

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Sources

  1. Wikipedia / Accessed October 4, 2022
  2. Gardening Know How / Mary H. Dyer / Published June 5, 2022 / Accessed October 4, 2022
  3. Natural History Museum of LA County / Emily Hartop / Accessed October 4, 2022
Abdulmumin Akinde

About the Author

Abdulmumin Akinde

Abdulmumin is a pharmacist and a top-rated content writer who can pretty much write on anything that can be researched on the internet. However, he particularly enjoys writing about animals, nature, and health. He loves animals, especially horses, and would love to have one someday.
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Figeater Beetle FAQs (Frequently Asked Questions)

No. While figeater beetles are often confused for june bugs, both insects are completely different. They have a similar appearance; both belong to the subfamily Cetoniinae (flower chafers). However, june beetles are smaller and are found in the eastern United States.