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Found on the underside of a Rangiora leaf.

1-2 mm long.

ID is for the fly on the left.

Attempting to mate with Sepedon sp. – https://www.inaturalist.org/observations/169020472

Cochrane District, ON

In and beside waterholes in the nearly-dry Sach's Creek.

Many of these on Acacia pycnantha on my street verge. Second photo shows two adults and what I presume is a nymph.

Very small 1-1.5mm

Interesting-looking 2-mm wingless aphid swept from grasses, also posted to BG here:
https://bugguide.net/node/view/1646634

Came to LED headlamp, coastal sage scrub.

Diptera

Honestly not sure

Nose flies, bee flies and beetles pollinating these wild flowers.

Bosque São Francisco