Asian Lady Beetle vs Ladybug — How to Tell Them Apart
Hundreds of orange 'ladybugs' around your windows every fall are almost always Asian lady beetles, not the native kind. Check the tells below, or upload a photo and our free AI tells you which one you have.
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How to Identify Asian Lady Beetle vs Ladybug
Check these features before you rely on any single one — the combination is what confirms the ID.
The single best tell. Asian lady beetles have a white area behind the head (the pronotum) with a black mark shaped like an M (or a W, viewed from the other side). Native ladybugs have a mostly black pronotum with small white patches and no M.
Asian lady beetles vary from pale yellow-orange to deep red, so a mix of shades in one swarm points to them. Native ladybugs such as the seven-spotted and convergent lady beetles are more consistently red.
Asian lady beetles can have anywhere from zero to about 20 spots, sometimes faint. Native species are more consistent; the seven-spotted ladybug, for example, has exactly seven bold spots.
Asian lady beetles are slightly larger (about 1/4 to 3/8 inch) and a little more dome-shaped than most native ladybugs, though size alone isn't reliable without the other clues.
If they're gathering by the hundreds on sunny walls and windows in October and getting inside, they're Asian lady beetles. Native ladybugs overwinter outdoors under leaves and bark and rarely invade homes.
When disturbed, Asian lady beetles release a yellow, bad-smelling fluid from their leg joints (reflex bleeding) that can stain walls and fabric. Native ladybugs do this too, but you'll mostly notice it with indoor swarms.
Ladybugs and Their Look-Alikes
Asian Lady Beetle
Orange to red with 0–20 spots and a white pronotum bearing a black M. Swarms into homes in fall, can give a harmless pinch-like bite, leaves smelly yellow stains, and can trigger allergies in some people. Beneficial outdoors, where it eats aphids.
Seven-Spotted Ladybug
Bright red with exactly seven black spots, a black pronotum with white patches at the front corners, and no M marking. A beneficial garden predator that doesn't swarm indoors.
Convergent Lady Beetle
Red-orange with up to 13 small spots and two converging white lines on a black pronotum. A native North American ladybug, often sold to gardeners for aphid control.
Mexican Bean Beetle
Copper-orange with 16 black spots in three rows and no black-and-white pronotum. A ladybug relative that eats bean leaves instead of aphids, so it's a garden pest.
Spotted Cucumber Beetle
Greenish-yellow with 12 black spots and a longer, less rounded body. A garden pest on cucumbers, squash, and melons, often mistaken for a yellow ladybug.
Squash Lady Beetle
Pale yellow-orange with large black spots, feeding on squash and pumpkin leaves. One of the few ladybugs that is a plant pest.
Found a different beetle or bug? Our free picture identifier identifies any insect, spider, or garden creature from a photo with the same AI.
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Frequently Asked Questions
Sources & References
Our identification guides are researched from the authorities below and reviewed by the IdentifyThis team. AI photo identification is a helpful starting point — for anything involving safety (venomous species, edibility, or medical symptoms), always confirm with a qualified expert before acting.
- CDC — Pest- and health-related guidance
- EPA — Integrated pest management
- UC IPM — University of California Pest Notes
- BugGuide — Entomology identification community
- Smithsonian — Insect & animal biology
Reviewed by the IdentifyThis team · Last updated August 2026