The following season they collected 663, and 307 specimens in 1975.

No live specimens have been collected in over 30 years.

Nothing is known of its behavior, as less than 20 specimens have ever been collected.

Only a few specimens have been collected and almost nothing is known of its natural history.

They spent a little under two years collecting specimens for the book.

Only a single specimen, collected in the 19th century, is known.

It is known from only a single specimen, collected in the 1950s.

It is only known from 1 specimen collected in 1964.

His first attempt to collect specimens was not a success.

Two other specimens were collected at the same time and location.