👉 In mathematics, an insectary is a subring of the ring of integers $\mathbb{Z}$ containing the positive integers and the negative integers. In other words, it is a subset of $\mathbb{Z}$ that contains both positive and negative integers. An integer $n$ in this subring is called an integer in the insectary if it satisfies the condition $n \in \mathbb{Z}^{+}$ or $-n \in \mathbb{Z