# Wool Sower Gall Wasp (*Callirhytis seminator*) The Wool Sower Gall Wasp is a tiny insect that creates special round galls on oak trees. These galls look like little fuzzy balls and are homes for the wasp's babies! - **Category:** [Insects](https://www.snappit.app/explore/categories/insect) - **Rarity:** Common - **Danger:** 1/5 · Very low - **Snaps:** 36 - **Habitat:** Forests ![Wool Sower Gall Wasp](https://commons.wikimedia.org/w/index.php?title=Special:Redirect/file/Chalcid_Wasp_%28Torymus_tubicola%29_%2814502759275%29.jpg&width=800) Photo: Benjamin Smith from United States, CC BY 2.0 · [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Chalcid_Wasp_%28Torymus_tubicola%29_%2814502759275%29.jpg) ## Appearance The Wool Sower Gall Wasp is a very tiny, dark-bodied insect, typically black or dark brown. It has delicate, clear wings that help it move between oak trees. Its small size, often just a few millimeters, makes it easily overlooked. ## Taxonomy - **Kingdom:** Animalia - **Phylum:** Arthropoda - **Class:** Insecta - **Order:** Hymenoptera - **Family:** Cynipidae - **Genus:** Callirhytis ## Interesting facts - Inside the gall are many tiny chambers, each holding a developing wasp larva. - The 'wool' of the gall is actually part of the oak tree! - These fuzzy galls look like cotton balls growing right on oak tree branches! - When fully grown, the tiny adult wasps chew their way out of the gall. ## Special abilities - **Gall Architect:** Wool Sower Gall Wasp can cleverly manipulate oak tree growth to create a protective, woolly nursery for its young larvae. - **Plant Whisperer:** Wool Sower Gall Wasp has special chemicals that trick oak trees into growing unique galls, providing shelter and food. - **Precision Planter:** Wool Sower Gall Wasp can precisely lay eggs within oak buds, triggering the formation of its distinctive woolly home. ## Measurements & details - **Wingspan:** 4-6 mm - **Size:** 2-3 mm - **Lifespan:** 7-14 days - **Leg Count:** 6 ## Diet & Feeding Adults might sip nectar, but the larvae eat juicy plant tissue from inside their cozy gall. - **Age differences:** Adult wasps may briefly feed on nectar, while larvae consume specific oak tissues. - **Primary Foods:** oak leaf tissue, oak stem tissue, nectar ## Ecological connections - **Depends on:** [White Oak](https://www.snappit.app/explore/white-oak) (*Quercus alba*) — Provides specific plant tissue for gall formation and larval food. - **Depends on:** Red Oak (*Quercus rubra*) — Host tree species where the wasp lays eggs and galls develop. - **Parasitizes:** Torymus Wasp (*Torymus advenus*) — Its larvae consume the developing Wool Sower Gall Wasp larvae within the gall. ## Traits - [Furry](https://www.snappit.app/explore/traits/furry): Furry describes animals possessing a dense covering of soft hair or fur. - [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. - [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. - [Diurnal](https://www.snappit.app/explore/traits/diurnal): Diurnal animals are primarily active during daylight hours, typically resting or sleeping at night. - [Keystone Species](https://www.snappit.app/explore/traits/keystone-species): Describes a species whose presence and role have a disproportionately large effect on its environment. - [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 Always look at insects from a distance and don't touch them unless you are sure they are safe. ## Frequently Asked Questions ### How to identify Wool Sower 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 Wool Sower Gall Wasp's wingspan? 4-6 mm ### How big is Wool Sower Gall Wasp? 2-3 mm ### How long does Wool Sower Gall Wasp live? 7-14 days ### What does Wool Sower Gall Wasp eat? Adults might sip nectar, but the larvae eat juicy plant tissue from inside their cozy gall. ### Where is Wool Sower Gall Wasp usually found? Forests ### How many legs does Wool Sower Gall Wasp have? 6 ## Where to spot - [Black Hawk State Historic Site](https://www.snappit.app/guides/places/black-hawk-state-historic-site) — Illinois, US · Park - [Centennial Arboretum](https://www.snappit.app/guides/places/centennial-arboretum) — Pennsylvania, US · Botanical Garden - [Oak Knoll Wildlife Sanctuary](https://www.snappit.app/guides/places/oak-knoll-wildlife-sanctuary) — Massachusetts, US · Nature Reserve - [Ravenswood Park](https://www.snappit.app/guides/places/ravenswood-park) — US · Nature Reserve - [Rockdale Common Housing District](https://www.snappit.app/guides/places/rockdale-common-housing-district) — Massachusetts, US · Historic District - [Shenipsit Trail](https://www.snappit.app/guides/places/shenipsit-trail) — Connecticut, US · Trail [View all places to see Wool Sower Gall Wasp](https://www.snappit.app/guides/where-to-see/wool-sower-gall-wasp) ## 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*) --- Source: [Wool Sower Gall Wasp: Facts & Places to See — Snappit](https://www.snappit.app/explore/wool-sower-gall-wasp)