Is It a Ladybug or an Asian Beetle?

Harmonia axyridis — the multicolored Asian lady beetle — is a genuine ladybug: family Coccinellidae, subfamily Coccinellinae, tribe Coccinellini. The Integrated Taxonomic Information System lists it as a valid, accepted species, Harmonia axyridis (Pallas, 1773), Taxonomic Serial No. 692602, and the standard peer-reviewed review of its biology states plainly that it "is currently placed in the tribe Coccinellini of the family Coccinellidae" (Koch 2003, Journal of Insect Science). It is not a look-alike from some other insect family — it is one particular introduced species among the many ladybug species found in North America.

Our own legacy site didn't treat it that way. It ran 52 "Asian beetle" pages next to 52 "ladybug" pages — the same roughly fifty questions, asked twice, once per name. Two of those old pages asked this exact question under two different titles: whether Asian beetles are a type of ladybug, and whether Asian lady beetles are the same as ladybugs. Both were answered as if the outcome were genuinely in doubt. It isn't, and it never was — which is the whole thesis of this page, sitting right there in our own old sitemap.

Naming the family doesn't tell you which insect is actually in front of you, and that's a fair follow-up question — New England has dozens of native ladybug species. Here the evidence is unusually clean. Ohio State University Extension draws the contrast directly: Harmonia axyridis regularly seeks overwintering shelter in and around buildings, while native lady beetle species typically spend the winter in sheltered sites outdoors — leaf litter, under bark, under rocks. Citizen-science records put a number on that contrast: Harmonia axyridis accounts for 97% of ladybug observations submitted from houses to Cornell's US Lost Ladybug Project (Ramsey & Losey 2012, reported in Roy et al. 2016, Biological Invasions). In its native range this species overwinters in rock crevices on cliff faces; in New Hampshire, a light-coloured house is the nearest substitute, and it gathers there the way native species simply don't — most numerously, per UNH Cooperative Extension, on the sunny side of buildings on mild days from mid-September through early November, which is the window when the massing that answers this identity question actually appears.

So if what's in front of you is clustered on a wall or working its way indoors in October, you don't need a colour chart — colour won't help much anyway, since Harmonia axyridis ranges from pale yellow-orange through deep red to fully black, and a native ladybug can look just as orange or just as spotted. The one physical cue worth knowing is the white patch on the pronotum, the plate behind the head, marked with a black "M" or "W" shape — UNH Extension and the wider literature treat it as more consistent than elytra colour. Beyond that, this page isn't the place for a full identification key; /pests carries a proper species profile for that.