Rabid Beetles spawn in 1st season (10th day)

Those are indeed bugs! But not the kind you're thinking of. These little guys didn't come out of nowhere, you've already met them when they were still little babies. The glowflies that spawn from exotic flowers undergo metamorphosis into rabid beetles near the end of the mild season. Just hang clear of the jungle, as that's where they spawn en masse going into the humid season.

Yeah, I know they grow from the glowflies. But I was under impression, that they should spawn at the start of the Humid season NOT at the end of Temperate one. Was I wrong?