The red shell of ladybugs symbolizes the Virgin Mary in the red robe, and the seven stars on the back of ladybugs symbolize the middle and happiness of the virgin, so they are also called ladybugs. It is also said that ladybugs are regarded by farmers as gifts from the Virgin Mary, which can help them eliminate pests in farmland and gardens.
In China, ladybugs are very auspicious and are regarded as a symbol of good luck. Asian legend shows that if the ladybug falls on your clothes, your true love will come. The number of spots on the ladybug indicates how many months it will take before you meet true love. Seven Star ladybug is a symbol of luck. There are seven dots on their back. In European culture, piggy, clover and seven star Ladybug are all symbols of luck.
Source: @undead_art_jhickletattoos