Deispider

Deispider (デースパイダー) is a spider enemy from Mega Man 9 that appears in the stages of Concrete Man and Jewel Man. It appears on ceilings, falling down and starting to jump around madly toward Mega Man when he gets close to it. It alternates between small and long jumps.

Darspider
Darspider (ダースパイダー) is a smaller version of Deispider that appears in Mega Man 10. They are found in Blade Man's stage, Pump Man's stage, Wily Stage 1 and Wily Stage 3. They move around and jump faster than Deispider.