Cockroach Eggs: Identify Roach Egg Cases (Ootheca, Oothecae) Female cockroaches produce egg cases, known as oothecae. ... species drop the egg case, while other species carry it until the eggs are ready to hatch.
台灣環境有害生物管理協會-- 蟑螂 美洲蟑螂卵鞘（ootheca）長約 9m m，寬約4~ 6m m，形狀有如紅豆，產下時多黏貼於器物的 ... 卵胚胎發育孵化期間因有母蟑螂之保護，故德國蟑螂之卵鞘遭受寄生蜂寄生的機會幾乎等於零。
