Identificaciones de chrisangell

Swept from vegetation and collected, 3 mm.

Small fly, maybe 2-3 mm, perhaps Trixoscelis?

1.5 mm

Caught in Malaise trap 20-28 September 2019, photo taken at California Academy of Sciences. Also posted to BG here:
https://bugguide.net/node/view/1753421

Small fly, maybe 2-3 mm, perhaps Trixoscelis?

Beat from pine tree, about 3 mm.

Caught in propylene glycol pitfall trap set 6-8 April 2021, 4 mm. Trixoscelis? Also posted to BG here:
https://bugguide.net/node/view/1963173

Caught in PG pitfall trap 9-10 Feb 2022, 5 mm.

Beat from Peritoma arborea and collected, 2.5 mm, also posted to BG.

Fly evidently killed by entomopathogenic fungus (?), stuck to leaf of Quercus lobata.

Swept from flowers, 2-3 mm.

3-5 mm, on ivy leaf, escaped collection.

2-3 mm gray fly on outhouse wall. Maybe Trixoscelis?

3-mm shiny fly near river, escaped collection.

3-5 mm robust fly, swept from grasses, escaped collection.