The Knight is not uncommon, and individuals are often encountered in the nature reserves.   The forewing apex is strongly whitened in the males but reddish brown in the females.  It was postulated by Col JN Eliot that the parkeri subspecies may spread into Johore and, as a result hybridise with the subspecies malayana.  However, we have not observed this phenomenon to have happened yet.  A sample of specimens obtained near Desaru in eastern Johor all yielded the malayana subspecies.  

However, on the Singapore side, the reverse seems to have occured, as specimens of malayana subspecies have been captured at Pulau Tekong recently (in 2001/2002), where they co-existed with the parkeri subspecies. Specimens of intermediate variations between the two subspecies were also taken at Pulau Tekong and Pulau Ubin.