I've been looking for the dark matter beetle for 4 days. I'm blind but I didn't think I was that blind. Any way to skip this one and try another?

Do you have the CustomCSS to move floating items to the top left of your screen? That can help a lot. -Items">link to customcss

If that's not your issue, the only way to skip the quest is to get another copy of the bug (as it's new, by buying one from shop search) and hand her that. Buying one is a bit of a waste of money, though.

Some bugs are only available in certain areas, but I think this one should be available anywhere.

About halfway down in the News announcement for Bug Catching 28 Jun 2019:

"Amber @ 06/28/19 2:52 pm STAFF @ Pun they can be found anywhere! Only a few of the birds are location based}"

Thanks, guys! I completely forgot about buying the darn thing.