How to Identify Ladybugs in Oregon

The Seven-spotted Lady Beetle is exactly what its name suggests, with seven red spots on a black or dark red background. Each wing cover has three spots, plus one spot at the center where the two wings meet. This is one of the most recognizable ladybug species in Oregon and accounts for over 4,200 recorded observations. The spots are usually round and clearly defined.

Asian Lady Beetles are highly variable, ranging from pale yellow to deep red or even black. Most are orange-red with black spots, but some individuals have very few spots or none at all. They are slightly larger than many native species, often 7 to 8 millimeters long. A key mark is the white or pale pronotum with a black marking that resembles an 'M' or 'W' shape. This species has been recorded nearly 4,300 times in Oregon and is now widespread.

The Western Polished Lady Beetle is shiny and usually red with black spots, but it is smaller and shinier than the Seven-spotted species. The pronotum is typically red or orange with small black markings or no markings at all. This beetle has a more glossy appearance overall. It is the third most abundant ladybug in Oregon with around 1,600 sightings.

The Convergent Lady Beetle is red or orange with black spots on the wing covers. The name comes from two white or pale lines that run upward from the base of the pronotum and converge toward the head, forming a distinctive pattern. This species is also common in Oregon with over 1,400 documented observations and is often seen aggregating in large numbers.

The Twenty-spotted Lady Beetle has a pattern of small black spots on a red background, as the name indicates. The Painted Lady Beetle is smaller with a mottled red and black appearance. The Two-spotted Lady Beetle has just two large spots and is less common. The Flying Saucer Lady Beetle is flatter and wider than other species, which makes it distinctive even with its spot pattern.

Most Oregon ladybugs range from 4 to 8 millimeters in length. The Asian Lady Beetle tends to be on the larger end, around 7 to 8 millimeters. The smaller species such as the Two-spotted Lady Beetle may be closer to 4 to 5 millimeters. Size alone is not a reliable identification feature, but combined with color and spot pattern, it helps narrow down the species.

The peak months for ladybug activity in Oregon are May, June, and July. During these months, you will see the greatest variety of species and the highest numbers of individuals. Spring and early summer are ideal for field identification because the ladybugs are actively foraging and more visible on plants, flowers, and vegetation.

Ladybugs feed on aphids and other small insects, so look for them on plants that host these pests. Gardens, wildflower patches, and shrubby areas are good spots. During summer, ladybugs may congregate on vegetation near water sources. In fall, they sometimes gather on light-colored structures or vegetation before overwintering.

Spot pattern is helpful but not always sufficient on its own. Color, pronotum markings, size, and overall shape are equally important. The Asian Lady Beetle is a good example because individuals vary dramatically in their spots. Looking at the combination of all these features together gives the most reliable identification.

There is no real difference. Ladybug and ladybird are regional names for the same insect. In North America, people typically say ladybug. In Europe and other regions, ladybird is more common. Both names refer to the same family of beetles, Coccinellidae.