What is a distinguishing character of arachnids?

ڈسٹنگ گوش کریکٹرسٹکس اف ارک نائٹس کون سے ہیں

6 legs

8 legs

Antennae

Wings

Arachnids, such as spiders and scorpions, are distinguished by having eight legs, a characteristic feature of this class.