Ladybirds are beetles (Order: Coleoptera) and so possess two characteristics that distinguish them from insects of other orders:
1. Hard forewings (elytra) that cover the abdomen and meet centrally
2. Biting mouthparts
The ladybird family within the beetle group is called the Coccinellidae. Coccinellids can be recognised by a number of general features:
• Small to medium sized beetles (1-10 mm or 1/16 - 3/4 inch long)
• Usually round or oval
• Elytra are often brightly coloured and patterned
• Short, clubbed antennae
• Pronotum (structure between the head and the elytra) is broader than long; extends forward at the margins and is often patterned
• Short legs that are retractable under the body
• Feet ( tarsi ) that have four segments but the third is so small that only three are easily visible