George from Vancouver, CanadaPaulo Pereira from Yonkers, Ny: there's no error here; the spiders, male or female, are called back widows; the song is about the spider, it being a metaphor for relationship angst. . .
Paulo Pereira from Yonkers, NyWidows are, by definition, female. Should have been called "The Black Widower" but I guess that wouldn't have fit the song as well.
"Come Dancing" by The Kinks was inspired by the older sister of Ray Davies, who would make guys take her out dancing and spend their money on her, only to send them home frustrated with just a peck on the cheek.