About Thorn Bug
Extraordinary treehopper with a thorn-shaped pronotum that makes it look exactly like a plant thorn when sitting on a branch. Mothers guard eggs and nymphs aggressively.
Did You Know?
Treehoppers have evolved the most bizarre body shapes of any insect — their enlarged pronotum can mimic thorns, helicopter blades, antlers, and even ant-like forms.
How to Identify Thorn Bug
Thorn Bug (Umbonia crassicornis) belongs to the order Hemiptera, family Membracidae. Adults typically measure 10-12 mm.
Thorn Bug Habitat
Thorn Bug is found in underground habitats, particularly across Central America, South America, North America. This species has adapted to thrive in its preferred environment, where it can find suitable food sources and shelter.
Thorn Bug Diet and Feeding
Thorn Bug feeds on plant sap by piercing stems and leaves with specialised mouthparts. Sap feeders extract nutrients directly from the plant's vascular system.
Where Is Thorn Bug Found?
Thorn Bug can be found in Central America, South America, North America, where it inhabits underground environments. Its distribution is influenced by climate, food availability, and habitat suitability.
Distribution Map
Where Thorn Bug can be found
Is Thorn Bug Dangerous?
Thorn Bug is generally harmless to humans. It does not bite or sting and poses no significant health risk. Like most insects, it prefers to avoid human contact and will typically flee rather than confront a perceived threat.
Thorn Bug Role in Nature
Thorn Bug is part of the food web as a primary consumer, feeding on plant material. It serves as an important food source for birds, bats, amphibians, and other insectivores, connecting plant energy to higher trophic levels.
Seasonal Activity
Frequently Asked Questions About Thorn Bug
What does Thorn Bug look like?
The Thorn Bug typically measures 10-12 mm.
Where is Thorn Bug found?
The Thorn Bug is found in Central America, South America, North America and typically inhabits underground environments.
What does Thorn Bug eat?
The Thorn Bug feeds on plant sap by piercing stems and leaves.
Is Thorn Bug dangerous to humans?
The Thorn Bug is generally harmless to humans. It does not bite or sting and poses no significant health risk.
What is an interesting fact about Thorn Bug?
Treehoppers have evolved the most bizarre body shapes of any insect — their enlarged pronotum can mimic thorns, helicopter blades, antlers, and even ant-like forms.
Cite This Page
APA:
InsectDiscover. (2026). Thorn Bug (Umbonia crassicornis). Retrieved from https://insectdiscover.com/insect/thorn-bug
MLA:
"Thorn Bug." InsectDiscover, https://insectdiscover.com/insect/thorn-bug.