Of course he meant 'hordes'. 'Whores of creepy crawlies' wouldn't make sense now, would it?
However, if he was referring to actual creepy crawlies like.. say, the most popular, spiders. DH is leading us to believe that among the 40,000 species of spider, there is a 'whore' category, with female spiders offering themselves to the males in return for money (insects?). However proposing something so unprecedented might be difficult, DH. I've read that in some species (or is in every?) females eat the males once they mate, which goes against your (assumed) money theory. Interesting though, that might well be the huge mental block of stupidity they face. Now, if they get past that, they might reach the intellectual level of humans one day.
Fascinating. Now suppose there is such a mental block in all animals.. that stop them from achieving high levels of intelligence. Maybe if a dog stops chasing its own tail or develops some self-pride, it may become intelligent. Or maybe if a cat can stop spending so much time licking itself? Intriguing.
What DH is saying is that he chose to ignore this 'whore' species (wise choice, my man) and just pressed the 'pedal' to the 'metal'. He also found it exhilarating.
Note: I've assumed that DH is talking about spiders. He might well be talking about lizards or cockroaches. I'm assuming spiders in the name of science. Even Newton assumed that the apple fell by itself. There might have well been a monkey on top.