Apparently their 'peak times' are from about 11pm-4am.
So unless you wanna stay up that late... you can try that. Or you can TT.
But try knocking into the trees that have any other bugs on them, so that scorpions or tarantulas have a better chance of spawning.
And walk through your town from down up, as you have a better field of vision, and turn up your volume so you can hear the bugs.
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