Best guess: Agabetes acuductus in Dytiscidae

Culicid (mosquito) larvae

I’m calling it Metacomet’s Cave because I think that’s a better name than King Philip’s Cave.
First bug walk of the season! Trying a new technique: no flash, high ISO, larger aperture, some focus stacking if necessary. I don’t know if it’s any better. Perhaps with a ring light?
I found a little stone (3-4 cm) that was swarming with Collembola, like little sheep.
Look, I caught one of them in the process of jumping!
Lasius ant, I believe, commonly called Citronella ants:
Fly in Heliomyzidae. This photo is the result of focus stacking. Mixed success:
I always see Leucauge venusta spiders as some of the earliest spiders in the spring. Also Cyclosa conica, but didn’t see any of those on this trip.
And another: