Aeolian

The Aeolian was an alien that appeared in the 13th episode, Aeolian during the first series of K-9 (series)

Biology
The Aeolians were one eyed creatures that had loud and high pitched mating calls. They were masters of amplification and used this to call their mate.

History
One female Aeolian was though to be the last of kind and came to Earth in 2050 to send out soundwaves in an attempt to attract her lost mate, this caused weather disruptions in the UK. The rest of her kind were lost in the Centrian castrophy. She was later found by Drake and CCPC officers who tried to apprehend her by stunning her, they failed as Starkey played a new tune which brought the partner to Earth and as a result he took her to his ship.(K9TV: Aeolian (TV story))