Silkfang

The Silkfang (Gogouge ゴコウゲ) is a large insect that is occasionally seen within the 1st layer of the Abyss. It has a 10-meter dome-shaped territory, and puts its sticky feelers inside of it. They use it as a trap to catch their prey when they carelessly enter their territory.

Description
They move extremely fast within their dome and can spit a paralyzing poison from their mouths. These traits make them quite dangerous when one accidentally steps within their territory, but their danger level decreases outside of it. However, they won't ever leave their dome and sleep at the top until potential prey appears. If one is cautious, avoiding them is not a hard task.

They might be edible, but this hasn't been confirmed yet.