Who do you know the difference between a girl ladybug and a boy ladybug?

Ladybugs (Coccinellids) are found worldwide, with over 5,000 species described, more than 450 native to North America alone.

To tell gender, you must first identify WHICH ladybug you are dealing with.

Some ladybugs have 7 spots, some 11, some 5, some none. Gender can not be determined by spots.

Gender can be determined by the pronotum and/or facial markings, usually. To find the differences you have to look up the species (try to id it by a native insect guide or checklist, google ladybug on image search.)