Leptirica 1973 Based on the 1880 short story After Ninety Years by Milovan Glišić, written, screenplay and direction by Đorđe Kadijević. A Yugoslav made for TV horror film that's often said to be the first real horror film made in Serbia and Yugoslav. It's part of the All The Haunts Be Ours from Severin. It's called The She-Butterfly in the US.
The town miller gets a visit at night by a creature that bites his neck until he's dead. The next morning the body is discovered by a local who then reports it to the mayor. The town priest discusses with the mayor and some locals that this is the 4th murder at the mill. No one wants to work the job, suspecting that a vampire is killing the millers.
A young man from a nearby town wants to marry a young woman but the father isn't too keen on his daughter marrying a man with little money. The young man takes the job at the mill. The vampire visits him but the young man hides in the attic. After his description of the creature the villagers are convinced that it is a vampire. They use a black stallion to find the grave of the vampire. They nail the coffin with a hawthorn stake and pour oil on it. A butterfly escapes from the coffin but they don't catch it.
The locals steal the young woman from her strict father and make arrangements to marry her off to the young man. An old woman is watching to see that the couple don't hook up in the night. She falls asleep and the young woman escapes. She visits the young man and he finds a black hole between her breasts. She turns into the vampire and the young man has to poke her with a stick. The movie ends with the young man lying on the ground with a butterfly moving in his hair.
I liked it more than I thought I would. It's vampire creature is different than the average vampire in film, very beast like. The movie looks OK. I'd watch it again someday. You can see a copy over at the Internet Archive. Link above.