When I did my Ifrit trial, I killed the Goblin's Beetles in Sauromugue Champaign (S). Ifrit normally one-shots them with Flaming Crush, it really isn't as bad as you think. (And if you get links, you can run just desummon the aggro away once the beetle dies.)
If you are dead set against beetle pets, you can see if the Armet Beetles are still in King Ranperre's Tomb, right around Cemetery Cherry pops. (They might have been taken away with GoV also though.) There are also new Beetles in Garlaige Citadel were Serket used to pop, but I think that they are over level 70, maybe over 80, meaning that they will have a fair amount of HP. If worse comes to absolute worst, you can always level sync to 11 or 12 and demolish Scarab Beetles in East or West Ronfaure. (Level 12 should get you to the point where the will all be EP, but the lowest level ones will almost be too weak.)
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