Rajah Brooke's Birdwing male (Trogonoptera brookiana) shown with a specimen signature of Alfred Russel Wallace who named it for his friend Sir James Brooke. Wallace is remembered as the co-author of evolution by natural selection with Darwin. Brooke was the famous 'White Rajah' of Sarawak and Wallace had been his guest in 1855 when he discovered this butterfly. Wallace wrote\on taking it out of my net, and opening the glorious wings, my heart began to pound violently, the blood rushed to my head, and I felt more like fainting, than I have done in apprehension of immediate death\" (from Wallace's 'Malay Archipelago'). Male T. brookiana can be seen in large numbers near mineral rich seeps. The bigger plainer females seldom come down from the canopy and were once wrongly considered to be outnumbered by the males 1000:1. We now know the ratio is more nearly equal."