Maricopa Harvester Ant vs Milkweed Bug

Side-by-side species comparison

Attribute Maricopa Harvester Ant Milkweed Bug
Scientific Name Pogonomyrmex maricopa Oncopeltus fasciatus
Order Hymenoptera Hemiptera
Family Formicidae Lygaeidae
Size 6-10 mm 10-13 mm
Habitat Heathland Grasslands
Diet Seed Feeders Seed Feeders
Regions North America North America, Central America
Conservation Least Concern Least Concern

Maricopa Harvester Ant

Produces the most toxic insect venom known — with an LD50 of 0.12 mg/kg in mice. Just 12 stings can deliver a lethal dose to a 2 kg mammal.

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Did You Know?

The venom of this ant is 20 times more potent than honey bee venom — it is the most toxic insect venom ever measured, yet the ant is only stung-aggressive when defending its nest.

Milkweed Bug

A medium-sized bug with bold orange-red and black warning coloration. It feeds on milkweed seeds and sequesters toxic cardiac glycosides for its own defense.

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Did You Know?

This bug has become a widely used laboratory model organism because it is easy to rear, has no diapause requirement, and displays clear warning coloration.