This is a solitary species found in small populations.

A solitary and diurnal species, it can live for up to 3.5 years in the wild.

The tube appears to be longer in solitary species rarely attended by ants.

It is a solitary species, growing, often in loose groups.

Based on current observations it appears to be a solitary species in the wild.

They are generally seen as a solitary species.

It is a solitary species, not harmful to crops.

Surely we are not the solitary species who fare between the stars.

However, even solitary species tend to be gregarious, and often several will nest near each other.

This is a solitary species and is never seen in schools.