✔ 最佳答案
Spiders are independent predators and will certainly kill one of another species.
Some few exceptions with social spiders, but again, an odd species is toast.
Even a male house spider has to be careful approaching a female, identifying itself properly or it will get attacked.
Two male jumping spiders, even the same species, may fight to the death.
With many species, even mating, the chance the male can run after mating is slim for survival.
The black widow was named for that behavior, although that is observations in captivity.
The male southern house spider,mating is usually its last act in life.
My homesteading black widow was one exception, the male lived in her web a good couple weeks after mating, he escaped when I put the female in captivity:
https://www.flickr.com/photos/32083154@N02/3966394322/in/dateposted/
The dead looking spider is the females recent molt, would loved to get a shot of that.
參考: Been around spiders 50 years.
