The Spider (1958)
Mr. Kingman: Well, speaking of spiders - are you sure rifles are just the thing? Insects have a pretty simple nervous system, sheriff. You could plug holes in one all day and never hit a vital spot. If you want to be on the safe side, call the pest control people in Springdale and have 'em send out all the DDT they can find.
Sheriff Cagle: [to a deputy after finding a desiccated body in a cave] Uh, you get back to town and make up a coroner's report. Just put down Jack Flynn as the name and the cause of death... uh...
Mr. Kingman: It was a spider drained all the liquid out of his body.
Sheriff Cagle: [Officiously] Just put down "cause unknown" and let the coroner worry about the rest. That's the trouble with you eggheads - you jump to conclusions! I know what I see and I see a dead man, but, uh, I don't see any spider.
Mr. Kingman: [to Mrs. Kingman] It'd be a good idea if you'd stay inside the house for awhile.