Monster (Humanoids from the Deep)

After a new cannery introduces scientifically augmented salmon to a seaside town in the Pacific Northwest, a species of mysterious, mutated sea creatures begin killing the men and raping the women. Details: Monster, 1980, United States Pre-Cert Video Label: Warner (WEV 99511)

Kingdom of the Spiders (1977)

Investigating the mysterious deaths of a number of farm animals, vet Rack Hansen discovers that his town lies in the path of hordes of migrating tarantulas. Before he can take action, the streets are overrun by killer spiders, trapping a small group of townsfolk in a remote hotel.