Well, bio-organism wasn’t the only plaque it seems. There was a hive of giant spiders with their queen in next floor!

Forest Hive - classic insectoids hive with basic traits. Sometimes durable against low temperatures though. Live in forests and tundras.

Desert Hive - an insectoid hive especially adaptated to high temperatures. Live in deserts and savannas.

Underground hive - an insectoid hive with adaptations to darkness. Lives in several types of underground areas. Can also hide in settlements, below unaware people.

Swamp hive - an insectoid hive with toxic adaptations. Usually live in swamps but can also live in forests and jungles as well as above aquatic areas.

Tropical hive - an insectoid hive adaptated to high temperatures as well as to areas with high moisture. Live in jungles and above aquatic areas.

Demonic hive - an insectoid hive modified by demons. Serve for Hell Undergrounds and Chaos Army as Beelzebub’s Glutton Horde and as Plague Regiments of Chaos Army.