# Bruchus affinis

Bruchus affinis is a little beetle that loves to munch on seeds, especially from plants like beans. These beetles are small and can be found in gardens and fields, making them a fun discovery for little explorers!

- **Category:** [Insects](https://www.snappit.app/explore/categories/insect)
- **Rarity:** Common
- **Danger:** 1/5 · Very low
- **Habitat:** Gardens, fields

![Bruchus affinis](https://commons.wikimedia.org/w/index.php?title=Special:Redirect/file/Bruchus_affinis_%282007-05-27%29.jpg&width=800)

Photo: Entomart, Attribution · [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Bruchus_affinis_%282007-05-27%29.jpg)

## Appearance

The Bruchus affinis is a small, oval-shaped beetle, typically reddish-brown with lighter markings and covered in fine, short hairs. It has a relatively small head and prominent antennae, distinguishing it from longer-snouted weevils.

## Taxonomy

- **Kingdom:** Animalia
- **Phylum:** Arthropoda
- **Class:** Insecta
- **Order:** Coleoptera
- **Family:** Chrysomelidae
- **Genus:** Bruchus

## Interesting facts

- A single female pea beetle can lay over 100 eggs in her short adult life!
- Some adult beetles don't even need to eat, surviving on energy from their larval stage!
- These clever beetles can play dead, freezing perfectly still to avoid predators!
- They often leave behind tiny, perfectly round 'windows' in seeds before emerging!

## Special abilities

- **Seed Camouflage:** Bruchus affinis can hide its tiny eggs perfectly inside plant seeds, making them almost impossible to spot from the outside.
- **Inner Sanctum Development:** Bruchus affinis larvae develop completely inside a single seed, munching on its nutrients until they are ready to emerge.
- **Future Forager:** Adult Bruchus affinis can sniff out the perfect legume plants to lay their eggs, ensuring their babies have a food supply.

## Measurements & details

- **Size:** 2-5 mm
- **Lifespan:** 30-60 days
- **Leg Count:** 6

## Diet & Feeding

Larvae eat plant seeds, while adults may nibble on pollen or simply not eat at all!

- **Age differences:** Larvae consume the interior of seeds; adults primarily feed on pollen/nectar or do not feed.
- **Primary Foods:** Peas (Pisum sativum), Broad beans (Vicia faba), Lentils (Lens culinaris), Chickpeas (Cicer arietinum)
- **Foraging Method:** Foraging

## Ecological connections

- **Eats:** [Pea](https://www.snappit.app/explore/pea) (*Pisum sativum*) — Larvae consume seeds
- **Eats:** Broad bean (*Vicia faba*) — Larvae feed on seeds
- **Parasitizes:** Parasitic wasp (*Dinarmus acutus*) — Lays eggs on larvae

## Traits

- [Solitary](https://www.snappit.app/explore/traits/solitary): Solitary animals live alone for most of their lives, only interacting with others for mating or parental care.
- [Herbivorous](https://www.snappit.app/explore/traits/herbivorous): This trait characterizes organisms whose diet consists entirely or primarily of plant material.
- [Decomposer](https://www.snappit.app/explore/traits/decomposer): Describes organisms that break down dead organic material, recycling nutrients back into the ecosystem.
- [Diurnal](https://www.snappit.app/explore/traits/diurnal): Diurnal animals are primarily active during daylight hours, typically resting or sleeping at night.
- [Miniature](https://www.snappit.app/explore/traits/miniature): Pertaining to species that are significantly smaller than typical or average for their kind.
- [Pollinator](https://www.snappit.app/explore/traits/pollinator): Describes organisms that transfer pollen, enabling the fertilization and reproduction of plants.

## Collections

- [Insects](https://www.snappit.app/explore/collections/insects)

## Safety

**Danger:** 1/5 · Very low

These beetles are not harmful, but it's best to look and not touch them.

## Frequently Asked Questions

### How to identify Bruchus affinis?

Look for hard wing covers meeting in a line down the back, then compare the antennae, body shape, legs and markings. Metallic colors shift a lot with lighting. Beetle Identifier: upload a photo and compare the visible details.

### How big is Bruchus affinis?

2-5 mm

### How long does Bruchus affinis live?

30-60 days

### What does Bruchus affinis eat?

Larvae eat plant seeds, while adults may nibble on pollen or simply not eat at all!

### Where is Bruchus affinis usually found?

Gardens, fields

### How does Bruchus affinis hunt?

Foraging

### How many legs does Bruchus affinis have?

6

## Where to spot

- [East Park](https://www.snappit.app/guides/places/east-park) — Washington, US · Park
- [Stephenson Canyon Community Greenway](https://www.snappit.app/guides/places/stephenson-canyon-community-greenway) — Washington, US · Park

## More Insects

- [Common Eastern Bumble Bee](https://www.snappit.app/explore/common-eastern-bumble-bee) (*Bombus impatiens*)
- [Spotted Lanternfly](https://www.snappit.app/explore/spotted-lanternfly) (*Lycorma delicatula*)
- [Brown-belted Bumble Bee](https://www.snappit.app/explore/brown-belted-bumble-bee) (*Bombus griseocollis*)
- [Eastern Carpenter Bee](https://www.snappit.app/explore/eastern-carpenter-bee) (*Xylocopa virginica*)

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Source: [Bruchus affinis: Facts & Places to See — Snappit](https://www.snappit.app/explore/bruchus-affinis)