noun
28-spotted ladybird
A specific species of ladybird (Epilachna vigintioctopunctata), often considered a pest of solanaceous crops.
ナスの葉にニジュウヤホシテントウがついていた。
A 28-spotted ladybird was on the eggplant leaf.
テントウムシ is the general term for ladybird/ladybug, while ニジュウヤホシテントウ refers specifically to the 28-spotted species.
Compound of 二十八 (にじゅうはち, 'twenty-eight'), 星 (ほし, 'spot'), and 瓢虫 (てんとう, 'ladybird'), referring to the 28 spots on its wing covers.