# Elm Leaf Beetle (*Xanthogaleruca luteola*) The Elm Leaf Beetle is a small, greenish-yellow bug that loves to munch on elm tree leaves. They can be found in gardens and parks, making them a fun little friend to spot! - **Category:** [Insects](https://www.snappit.app/explore/categories/insect) - **Rarity:** Common - **Danger:** 1/5 · Very low - **Snaps:** 1 - **Habitat:** Urban areas ![Elm Leaf Beetle](https://commons.wikimedia.org/w/index.php?title=Special:Redirect/file/Xanthogaleruca_luteola_MHNT_Dos.jpg&width=800) Photo: Didier Descouens, CC BY-SA 4.0 · [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Xanthogaleruca_luteola_MHNT_Dos.jpg) ## Appearance The Elm Leaf Beetle has an oval-shaped, greenish-yellow body with two distinct dark stripes running down its back. Its head and thorax are also marked with small black spots, making it visually distinct from many other leaf beetles. ## Taxonomy - **Kingdom:** Animalia - **Phylum:** Arthropoda - **Class:** Insecta - **Order:** Coleoptera - **Family:** Chrysomelidae - **Genus:** Xanthogaleruca ## Interesting facts - A single beetle can lay hundreds of eggs, quickly overwhelming an elm tree! - Larvae create 'skeletonized' leaves by eating only the soft parts, leaving veins behind. - Severe infestations can make elm trees look brown and defoliated, as if it's autumn in summer! - They sometimes sneak into people's homes during autumn to find a warm spot to sleep for winter. ## Special abilities - **Leaf Masticator:** Elm Leaf Beetle can chew through tough elm leaves using strong mandibles that help them get vital nutrients for survival. - **Winter Hibernator:** Elm Leaf Beetle has a special ability to enter diapause, helping them survive cold winters by hiding in sheltered places. - **Quick Spreader:** Elm Leaf Beetle can fly well, allowing them to quickly spread to new elm trees and find fresh leaves to eat. - **Egg Protector:** Elm Leaf Beetle lays its small yellow eggs in clusters on the underside of elm leaves, which helps protect them from predators. ## Measurements & details - **Wingspan:** 10-14 mm - **Size:** 5-7 mm - **Lifespan:** 21-120 days - **Flight Speed:** 5 km/h - **Leg Count:** 6 ## Diet & Feeding Tiny leaf-eaters that munch exclusively on elm tree leaves. - **Age differences:** Larvae scrape the underside of leaves, while adults chew through the entire leaf. - **Primary Foods:** Ulmus americana, Ulmus minor, Ulmus procera - **Foraging Method:** Foraging ## Ecological connections - **Eaten by:** [American Elm](https://www.snappit.app/explore/american-elm) (*Ulmus americana*) — Adults and larvae eat leaves, causing damage. - **Parasitizes:** Elm Leaf Beetle Egg Parasitoid (*Tetrastichus xanthogalerucae*) — Tiny wasp lays eggs inside the beetle's eggs. - **Eats:** Spined Soldier Bug (*Podisus maculiventris*) — Predatory bug preys on elm leaf beetle larvae. - **Eats:** [House Sparrow](https://www.snappit.app/explore/house-sparrow) (*Passer domesticus*) — Birds will feed on the adult beetles. ## 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. - [Colorful](https://www.snappit.app/explore/traits/colorful): Colorful describes organisms or objects displaying a wide range of bright and distinct colors. - [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. - [Urban Friendly](https://www.snappit.app/explore/traits/urban-friendly): This habitat trait indicates species that can coexist with humans in urban and suburban environments, utilizing man-made structures and green spaces. - [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 beetles from a distance and not touch them. ## Frequently Asked Questions ### How to identify Elm Leaf Beetle? 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. ### What is Elm Leaf Beetle's wingspan? 10-14 mm ### How big is Elm Leaf Beetle? 5-7 mm ### How long does Elm Leaf Beetle live? 21-120 days ### How fast can Elm Leaf Beetle fly? 5 km/h ### What does Elm Leaf Beetle eat? Tiny leaf-eaters that munch exclusively on elm tree leaves. ### Where is Elm Leaf Beetle usually found? Urban areas ### How does Elm Leaf Beetle hunt? Foraging ## Where to spot - [Riverside Cemetery](https://www.snappit.app/guides/places/riverside-cemetery) — Colorado, US · Historic Site ## 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: [Elm Leaf Beetle: Facts & Places to See — Snappit](https://www.snappit.app/explore/elm-leaf-beetle)