it could only cause evolution if you affected the breeding fitness of one genotype over another, causing a preferential trait to be more prolific. Trimming their wings doesn't affect their genes. I know they're crickets... they're like the worst and most annoying feeders for any herp. They have been the bane of my existence at times... But the Cricket in James and the Giant Peach used his wings like a violin... Dude you're stealing those crickets violins ... How will they serenade their womens?