All known specimens were collected by light trap in late July.

The only known specimen is a juvenile that was collected more than 80 years ago.

It was thought to be extinct after the last four known specimens were taken in 1898.

The oldest known specimen of the ancient human was found in southern Africa.

Due to its very short circulation, there are currently only two known specimens.

During the twentieth century new finds have brought the number of known specimens to about a dozen.

The only known specimen is a female 4 mm in length.

It was discovered in 1981 and the single known specimen has since died.

The last known specimen was caught in the late 1920s to early 1930s.

Up to 1999 there were only 34 known specimens in collections.