# Poplar Petiole Gall Aphid (*Pemphigus populitransversus*) The Poplar Petiole Gall Aphid is a tiny bug that loves to live on poplar trees. It creates little bumps called galls on the leaves, which are like cozy homes for them! - **Category:** [Insects](https://www.snappit.app/explore/categories/insect) - **Rarity:** Common - **Danger:** 1/5 · Very low - **Habitat:** Forests ![Poplar Petiole Gall Aphid](https://commons.wikimedia.org/w/index.php?title=Special:Redirect/file/Pemphigus_populitransversus.jpg&width=800) Photo: Emily Summerbell, CC BY 4.0 · [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Pemphigus_populitransversus.jpg) ## Appearance The Poplar Petiole Gall Aphid is a tiny, soft-bodied insect, typically pale yellowish-green. It lives hidden inside a distinctive, purse-shaped or bean-like gall that forms on the leaf stem of poplar trees. These galls are initially green, often turning reddish or yellowish. ## Taxonomy - **Kingdom:** Animalia - **Phylum:** Arthropoda - **Class:** Insecta - **Order:** Hemiptera - **Family:** Aphididae - **Genus:** Pemphigus ## Interesting facts - Ants sometimes 'farm' aphids, gently tapping them to get a sweet liquid called honeydew! - Beneath the soil, some aphids spend winter feeding on plant roots, completely unseen! - Some aphids can grow wings and fly to new trees when their home gets too crowded! - Their amazing gall home acts like a secret fort, keeping young aphids safe from hungry predators! ## Special abilities - **Gall Creator:** Poplar Petiole Gall Aphid can create amazing plant galls because of special chemicals they inject, which tricks the poplar tree into growing a protective home. - **Sap Sucker:** Poplar Petiole Gall Aphid has a straw-like mouthpart (proboscis) that helps them expertly suck sugary sap directly from the poplar tree's veins. - **Clonal Reproduction:** Poplar Petiole Gall Aphid has a superpower of 'virgin birth' (parthenogenesis) that helps them reproduce super fast without needing a mate. - **Host Swapper:** Poplar Petiole Gall Aphid can switch hosts between poplar trees and other plants, which helps them survive different seasons and conditions. ## Measurements & details - **Size:** 1-3 mm - **Lifespan:** 14-30 days - **Leg Count:** 6 - **Colony Size:** 1000 ## Diet & Feeding These tiny insects drink the sugary sap right from poplar trees, like sipping juice through a straw! - **Age differences:** Early stages feed inside galls on poplar sap; later generations feed on roots of mustard family plants. - **Primary Foods:** Poplar sap, Cottonwood sap, Mustard plant roots - **Foraging Method:** Foraging ## Ecological connections - **Eats:** [Eastern Cottonwood](https://www.snappit.app/explore/eastern-cottonwood) (*Populus deltoides*) — Feeds on sap, causing gall formation. - **Depends on:** [Field Mustard](https://www.snappit.app/explore/field-mustard) (*Brassica rapa*) — Overwintering generation feeds on its roots. - **Eats:** Convergent Lady Beetle (*Hippodamia convergens*) — Adults and larvae prey on aphids. - **Eats:** Small-spotted Hoverfly (*Eupeodes corollae*) — Its larvae voraciously consume aphids. - **Parasitizes:** Aphid Parasitoid Wasp (*Aphelinus asychis*) — Lays eggs inside aphids, killing them. ## Traits - [Social](https://www.snappit.app/explore/traits/social): Social animals live in organized groups, cooperating for survival benefits such as foraging, defense, and raising offspring. - [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. - [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 insects from a distance and not touch them. ## Frequently Asked Questions ### How to identify Poplar Petiole Gall Aphid? Look for six legs, antennae, three body sections and the shape of the wings. Beetles have hardened front wings; flies have just one working pair. Tiny insects may need a close view before their group is clear. Insect Identifier: upload a photo and compare the visible details. ### How big is Poplar Petiole Gall Aphid? 1-3 mm ### How long does Poplar Petiole Gall Aphid live? 14-30 days ### What does Poplar Petiole Gall Aphid eat? These tiny insects drink the sugary sap right from poplar trees, like sipping juice through a straw! ### Where is Poplar Petiole Gall Aphid usually found? Forests ### How does Poplar Petiole Gall Aphid hunt? Foraging ### How many legs does Poplar Petiole Gall Aphid have? 6 ### How large are Poplar Petiole Gall Aphid colonies? 1000 ## 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: [Poplar Petiole Gall Aphid: Facts & Places to See — Snappit](https://www.snappit.app/explore/poplar-petiole-gall-aphid)