When we were kids, we called seven-spotted ladybugs 'flower brides.'
Tips
culture
A northern dialect nickname: 花 (colorful-patterned) plus 媳妇 (young married woman / daughter-in-law). The red-spotted shell apparently reminded people of a bride's colorful wedding attire. Standard term is 七星瓢虫 or 瓢虫.
register
Dialectal and colloquial, mainly northern China; not standard. Use the standard names in writing or formal speech.