INTRODUCTION
The Knysna Skolly, Thestor brachycerus was discovered and described at Knysna by Roland Trimen, the discoverer of the Brenton Blue (Trimen 1883). Whilst it was originally very abundant, it has become very rare due to its very narrow habitat specificity, small geographic range (only known from Knysna) and the loss of habitat within this range. A declining population trend has been witnessed since the 1960’s and this has accelerated since 1980.