# Crystalline Gall Wasp (*Feron crystallinum*)

The Crystalline Gall Wasp is a tiny insect that creates beautiful, shiny galls on plants. These galls look like little crystals and are homes for the wasp's babies!

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

![Crystalline Gall Wasp](https://commons.wikimedia.org/w/index.php?title=Special:Redirect/file/Crystalline_gall_wasp_%28Andricus_crystallinus%29_%289288740840%29.jpg&width=800)

Photo: Franco Folini from San Francisco, USA, CC BY-SA 2.0 · [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Crystalline_gall_wasp_%28Andricus_crystallinus%29_%289288740840%29.jpg)

## Appearance

The Crystalline Gall Wasp is a tiny insect, typically dark brown or black, with delicate, clear wings. Its slender body and short antennae help it navigate among oak leaves, where it is often overlooked due to its minuscule size.

## Taxonomy

- **Kingdom:** Animalia
- **Phylum:** Arthropoda
- **Class:** Insecta
- **Order:** Hymenoptera
- **Family:** Cynipidae
- **Genus:** Andricus

## Interesting facts

- Gall wasps create plant structures that look like tiny alien jewels!
- Inside their plant homes, baby wasps are safe and have plenty to eat.
- The galls they create protect them from many hungry birds and insects!
- These wasps are so small, you might need a magnifying glass to spot them!

## Special abilities

- **Plant Reprogrammer:** Crystalline Gall Wasp releases powerful chemicals into oak buds that force the plant to grow specific, protective homes for its larvae.
- **Asexual Reproduction:** Some Crystalline Gall Wasps can reproduce without a mate through parthenogenesis, helping them establish populations more quickly.

## Measurements & details

- **Wingspan:** 4-8 mm
- **Size:** 2-4 mm
- **Lifespan:** 7-20 days
- **Leg Count:** 6

## Diet & Feeding

Adults sip nectar, while larvae eat nourishing plant tissue from inside their custom-built galls.

- **Age differences:** Larvae consume plant tissue inside their galls, while adults feed on nectar and honeydew.
- **Primary Foods:** Nectar, Oak leaf tissue, Oak bud tissue, Honeydew

## Ecological connections

- **Depends on:** [Coast Live Oak](https://www.snappit.app/explore/coast-live-oak) (*Quercus agrifolia*) — for shelter and food, inducing galls on its leaves.
- **Depends on:** [Valley Oak](https://www.snappit.app/explore/valley-oak) (*Quercus lobata*) — to grow its unique nurseries for developing larvae.
- **Parasitizes:** Splendid Torymid Wasp (*Torymus splendidus*) — by laying eggs inside the gall wasp larvae within the gall.

## 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.
- [Pollinator Magnet](https://www.snappit.app/explore/traits/pollinator-magnet): Describes plants that are particularly attractive and beneficial to a wide range of pollinating organisms.
- [Symbiotic](https://www.snappit.app/explore/traits/symbiotic): Describes a relationship between two different species where they live in close association, often benefiting one or both.
- [Forest](https://www.snappit.app/explore/traits/forest): Forest habitats are terrestrial environments dominated by dense tree cover, supporting a high diversity of plant and animal life.
- [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

It's best to look at these wasps from a distance and not touch them.

## Frequently Asked Questions

### How to identify Crystalline Gall Wasp?

Compare the antennae, wings, waist, body hair and legs. Yellow and black stripes show up on bees, wasps and harmless mimics alike. Bee & Wasp Identifier: upload a photo and compare the visible details.

### What is Crystalline Gall Wasp's wingspan?

4-8 mm

### How big is Crystalline Gall Wasp?

2-4 mm

### How long does Crystalline Gall Wasp live?

7-20 days

### What does Crystalline Gall Wasp eat?

Adults sip nectar, while larvae eat nourishing plant tissue from inside their custom-built galls.

### Where is Crystalline Gall Wasp usually found?

Forests

### How many legs does Crystalline Gall Wasp have?

6

## Where to spot

- [Jack London State Historic Park](https://www.snappit.app/guides/places/jack-london-state-historic-park) — California, US · State 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: [Crystalline Gall Wasp: Facts & Places to See — Snappit](https://www.snappit.app/explore/crystalline-gall-wasp)