Its distribution in Asia is poorly studied, and may be more extensive than currently known.

The snailfish family is poorly studied and few specifics are known.

Gulls are present throughout the year although the populations have been poorly studied.

It is poorly studied but is believed to be rare.

Despite being poorly studied, they are heavily targeted by commercial fishing, including dredging.

The section is poorly studied, and with further genetic testing it may be absorbed into another.

The African species is a partial migrant, but its movements are complex, seasonal and poorly studied.

Its biology is poorly studied and only little information about the species has emerged in the past decades.

The species in this subgenus are forest mosquitoes and to date have been poorly studied.

This genus has been poorly studied and little is known about it.