Cockroach egg case (Ootheca)

Scientific Name: Blattodea (Family: Ectobiidae or Blattidae)

Order & Family: Order: Blattodea; Family varies (e.g., Blattellidae or Blattidae)

Size: 5mm to 10mm in length depending on species.

Cockroach egg case (Ootheca)

Natural Habitat

Dark, humid, and warm areas such as behind appliances, in cupboards, under sinks, or in crawl spaces.

Diet & Feeding

The developing embryos inside consume yolk within the egg; adult cockroaches are scavengers eating decaying matter, starches, and crumbs.

Behavior Patterns

Females carry the capsule briefly or for several days before depositing it in a protected crevice; one capsule can contain 16 to 40 developing nymphs.

Risks & Benefits

Risks include signifying an active infestation; cockroaches spread bacteria, pathogens, and allergens. There are no significant benefits in a domestic ecosystem.

Identified on: 4/16/2026