This little female is really puzzling me and she finally
let me get some pictures last weekend.
- Host plant: Shasta daisy (Leucanthemum × superbum). Only observed on this species numerous times over the past week or so (we have multiple clumps of Shasta daisies). I tried to catch her, but she wasn't amenable.
- Size: ≤5 mm. I know for certain that she was less that 5 mm in length, because I measured the plants' central discs and they topped out at 18 mm in diameter.
- Date & time: July 21, 2018, 3:00 pm
Is she maybe a Stelis
? She didn't fit any of the keys I tried for Dianthidium
—and it looks like she doesn't have much of a scopa. We do have an enormous mixed population of Heriades
, and other Megachilidae nesting in our yard this year (I've been meaning to post pictures for identification), and our cuckoo bee population in general has just exploded (if she is a Stelis
, she'd be the 6th cuckoo species this year and 8th overall). I also have a ton of extra photos not included here, so if you need more, please let me know!
Apologies in advance if this is too many photos, I just wanted to make sure as many features as possible were visible.