members of one species in a area are called
http://en.wikipedia.org/wiki/Deme_(biology)
Members of one species in a given area are commonly referred to as a population. In biology, a population is defined as a group of individuals of the same species that live in the same geographical area and have the potential to interbreed. It is important to note that within a population, individuals share similar genetic characteristics while also exhibiting some level of variation. Thus, a population can be seen as a dynamic entity that evolves over time.
To gain a deeper understanding of this topic, you can visit the provided link to the Wikipedia page on "Deme" in biology. This page further explains the concept of deme, which refers to a group of individuals within a population who share more similar genetic characteristics due to factors such as geographic isolation or adaptation to local environmental conditions.