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Japanese Beetle

Popillia japonica

Japanese Beetles are shiny green and bronze beetles. They love to munch on leaves and flowers in gardens!

Habitat: Gardens and fields

Appearance

The Japanese Beetle has a shiny, iridescent metallic green head and thorax. Its wing covers are coppery-brown, and it features five distinct patches of white hair along each side of its abdomen, with two more at the tip, making it visually unique.

KingdomAnimaliaPhylumArthropodaClassInsectaOrderColeopteraFamilyScarabaeidaeGenusPopillia
Japanese Beetle
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Japanese Beetle

Category

Insect

Rarity

Common

Danger

2/5

Snaps

41

Interesting facts

A single female Japanese beetle can lay up to 60 eggs in the soil during her short summer lifespan!

Japanese beetle grubs live underground for months, happily munching on grass roots before they become adult beetles.

These beetles were first accidentally brought to America hidden in a shipment of iris bulbs in 1916!

They can skeletonize leaves, eating only the soft parts and leaving behind just the veins, making plants look like lace!

Special abilities

Ability

Plant Chomper

Japanese Beetle can devour a wide variety of plants using powerful chewing mouthparts that help them feed quickly.

Ability

Scent Magnet

Japanese Beetle has special scent glands that release pheromones, helping them attract many other beetles to new food sources.

Ability

Quick Escape

Japanese Beetle can fly swiftly with strong wings, allowing them to rapidly move between plants or escape from threats.

Measurements & details

Wingspan
12-15 mm
Size
8-11 mm
Lifespan
30-60 days
Flight Speed
10 km/h
Leg Count
6

Diet & Feeding

These tiny plant-eaters munch on leaves, flowers, and fruits, causing damage to many different plants.

Age differences: Larvae (grubs) live underground, eating plant roots, while adults feed on leaves, flowers, and fruits above ground.

Primary Foods

  • Rose
  • Grape
  • Corn
  • Linden Tree
  • Apple Tree
  • Turfgrass Roots

Foraging Method

  • Foraging

Ecological connections

eaten by

European Starling

Sturnus vulgaris

Adult beetles are a common food source for these adaptable birds.

parasitizes

Spring Tiphia Wasp

Tiphia vernalis

Wasp larvae grow inside and consume Japanese beetle grubs.

eats

Gallica Rose

Rosa gallica

Adult beetles feed heavily on rose leaves and flowers, causing damage.

eats

Corn

Zea mays

Beetles chew on corn silk, which can prevent successful pollination.

Traits

Also known as

Japanese Rose BeetlePopillia Beetle

Safety

Danger

2/5

Do not touch or pick up. Some insects sting or bite. Ask an adult for help.

Frequently Asked Questions

What is Japanese Beetle's wingspan?

12-15 mm

How big is Japanese Beetle?

8-11 mm

How long does Japanese Beetle live?

30-60 days

How fast can Japanese Beetle fly?

10 km/h

What does Japanese Beetle eat?

These tiny plant-eaters munch on leaves, flowers, and fruits, causing damage to many different plants.

Where is Japanese Beetle usually found?

Gardens and fields

How does Japanese Beetle hunt?

Foraging

How many legs does Japanese Beetle have?

6

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