Here's a link to the study:African golden jackals are actually golden wolves
Look at the long, slender snout and small body of an African golden jackal, and you’d be forgiven if you confused it with the golden jackal of Eurasia. Even researchers have long considered them members of the same species, canis aureus. But a new study says the two are separate species despite their similar good looks. To come up with the new classification, researchers compared genomewide DNA samples from jackals, gray wolves, and dogs. They found that African golden jackals diverged from coyotes and gray wolves some 1.3 million years ago, compared with 1.9 million years for Eurasian golden jackals, and that the two groups’ mitochondrial DNA differs by up to 6.7%. But because both species feed on the same prey in similar environments, they may have developed nearly identical physical traits—a process known as parallel evolution. To honor their find, researchers writing in Current Biology have suggested a name closer to the creature’s roots: canis anthus, or the African golden wolf. The new classification would bring the total number of living dog species from 35 to 36, and it might just go to show that you can hide a wolf, as long as it’s in jackal’s clothing.
http://www.cell.com/current-biology/abs ... 15)00787-3
I've always suspected this. Even before the publication of this paper, I'd considered their separation on the following grounds;
1. Their differing appearances. Yes, I know this is a superficial view to take, but let's get it out of the way as soon as possible. Aside from colouration (which really doesn't indicate anything, considering the amount of variation present in wolves), the most striking difference I see is the presence of a "stop" on the foreheads of the African variety.
2. Mating behaviours. According to Mammals of the Soviet Union (which mentions Eurasian jackals), the copulatory tie lasts 20-45 minutes, whereas The behavior guide to African mammals states that it lasts four minutes in African jackals.
3. Genetics. Apparently, the karotype of Indian jackals is NF = 80, as opposed to NF = 84 in other populations. Such a discrepancy is not present among domestic dogs and wolves.
4. Reproductive compatability. According to The Animal Kingdom: Arranged in Conformity with Its Organization by Charles Hamilton Smith, although Asian and African golden jackals can produce offspring, few of said pups survive birth, almost like the case with hybrid big cats.