What is the Difference Between Ladybug and Asian Beetle?

The main differences between ladybugs and Asian beetles, also known as Asian lady beetles, include their appearance, size, color, and markings. Here are the key distinctions:

1. Size and Shape: Ladybugs have a more round shape, while Asian lady beetles tend to be oval and a little longer. Asian lady beetles are also slightly larger than ladybugs, measuring about 7 mm long and 5.5 mm wide.
2. Color: Ladybugs are typically bright red, while Asian lady beetles can vary from red to orangey-red.
3. Markings: Ladybugs have dots on their backs, while Asian beetles have no dots and are more angular. Asian lady beetles also have larger white "cheek" markings and more white on their heads overall. They often have an "M" or "W" shape on their heads, which is not present in ladybugs.
4. Biting: Asian lady beetles are known to bite, while ladybugs very rarely do.
5. Odor: Ladybugs do not produce any odors, but Asian lady beetles secrete a yellow, foul-smelling scent.
6. Invasive Behavior: Asian lady beetles are more likely to invade homes and gather on reflective surfaces like windows and sliding glass doors.

By examining these differences, you can distinguish between ladybugs and Asian beetles and determine whether the insects in your garden or home are friendly ladybugs or invasive Asian lady beetles.

Comparative Table: Ladybug vs Asian Beetle

Here is a table comparing the differences between ladybugs and Asian beetles:

Ladybugs and Asian beetles, although part of the same insect family (coccinellidae), have distinct differences in appearance and behavior. Ladybugs are generally bright red with 11 black spots, while Asian beetles are orange and yellow with around 19 black spots. Additionally, Asian beetles have a black "M" marking on their head, which is not present in ladybugs. In terms of behavior, ladybugs are beneficial insects that feed on aphids and other pests, while Asian beetles are known to infest apple trees and invade homes, causing a nuisance.