I cannot point to any one particular source for this but my opinion (based on what I have read here and elsewhere) is that Blacks are either descended from the the fallen angels or are the product of the fallen angels copulating with apes. This is based on 2 Peter 2:4 ("God spared not the angels that sinned, but cast them down to hell, and delivered them into chains of darkness, to be reserved unto judgment) and Jude 6 ("And the angels which kept not their first estate, but left their own habitation, he hath reserved in everlasting chains under darkness unto the judgment of the great day") and on the obvious similarities between Blacks and apes. The Jews are a mixture of Kenites (the original Satanic seedline), Canaanites and Edomites. All other races are a mixture of Whites, Blacks and Jews and are, therefore, a corruption of Yahweh's creation.
Clifton Emahiser has written on the subject of Satan as having been some sort of ape and this is based, if I recall correctly, on the language used in the original Greek Scriptures to describe him.