According to Garthwaite and Lawson this should be L. gracile. Unlike L. latum it is smooth instead of tuberculate.
Pretty interesting that they were here. Habitat was a dry creek bed that still had moist soil but no standing water. Not sure if it's seasonal in a normal year but unless we get some freak rain storms it seems like it'll probably get pretty toasty in the coming months. How do these isopods handle it? Like other Ligidium I've seen these only seemed to be in the rocky areas. Vegetation was oak / bay woodland, plenty of poison oak too.
Despite Trent's expert tickling this was the best pic I got. Not sure if it's possible to tell if it's Promyrmekiaphila or Aptostichus.
Found several clustered under logs in the dry stream bed.
Satan's pancake flipper, AGAIN. I so love this harvestmen. When I found it the rest of the group were further down the stream bed. It was so cryptic that I knew I couldn't take my eyes off it or I might lose it, so I stared at it intently for a few minutes until the rest of the group arrived, at which point I exclaimed "Ortholasma! You must photograph this!" And then I realized I was getting super excited and pointing at a creature nigh indistinguishable from a tiny fleck of soil unless you have a hand lens or a macro setup.
This was the first of two I found. Habitat was quite a bit different than the moist, mixed tanoak / Doug fir / redwood mix at Gazos Creek, which was where I first encountered this beast. Instead they were crawling around a dry creek bed with moist soil, oak / bay canopy. I'm not sure how frequently this creek dries up in "normal" years (whatever that means these days), but the presence of snails (Trilobopsis and succinoids that may have been Catinella), burrowing mygalomorphs (Antrodiaetus riversi and and unidentified trapdoor spider), and riparian isopods (Ligidium gracile) suggest this area does retain moisture, if not surface water.
This one used lichen in its turret construction, a choice that we endorsed whole-heartedly. Also, Trent is the best turret tickler ever.
Calymmaria? I feel like that's what big brown bandy-legged unidentifiable spiders always ended up being in class.
Funny, "Devil's pancake flipper" doesn't show up as a recognized common name.
Resupinate pore fungus, no spore print obtained, on hardwood.
Good stand, may attract butterflies.