Diptera (Flies)
About
Observations
Species
Pegomya sp.
5 Aug 2025
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On the underside of swiss chard leaves\r\n\r\n0.8 mm long, 0.2 mm wide
Leucophora sp.
30 Apr 2025
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Several of these were tailing an Andrena prunorum female near her nest
Sepsidae
(Black Scavenger Flies)
(Black Scavenger Flies)
4 Apr 2025
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On compost bin, ~ 4 mm\r\n\r\nFlies were waving wings in a mating display\r\n\r\n@zdanko \r\n
Oestroidea
(Bot Flies, Blow Flies, and Allies)
(Bot Flies, Blow Flies, and Allies)
11 Mar 2025
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On inside of front door. ~ 5 mm
Oestroidea
(Bot Flies, Blow Flies, and Allies)
(Bot Flies, Blow Flies, and Allies)
10 Mar 2025
On inside of front door.
5 mm
Brachycera
(Brachyceran Flies)
(Brachyceran Flies)
23 Oct 2024
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Found on inside of window. 4 mm\r\nAre those mites on the abdomen?
Eupeodes fumipennis
(Western Aphideater)
(Western Aphideater)
17 Aug 2024
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Associated Species: Lactuca serriola (Prickly Lettuce)
Thecophora sp.
28 Jul 2024
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On oregano flowers
Associated Species: Origanum vulgare (Oregano)
Sphaerophoria sulphuripes
(Forked Globetail)
(Forked Globetail)
28 Jul 2024
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On parsley flowers
Associated Species: Petroselinum crispum (Garden Parsley)
Eristalis arbustorum
(Eurasian Drone Fly)
(Eurasian Drone Fly)
26 Jul 2024
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On fern-leaf yarrow flowers
Associated Species: Achillea filipendulina (Fern-leaf Yarrow)
Syritta pipiens
(Common Compost Fly)
(Common Compost Fly)
23 Jul 2024
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On parsley flowers
Associated Species: Petroselinum crispum (Garden Parsley)
Syritta pipiens
(Common Compost Fly)
(Common Compost Fly)
23 Jul 2024
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On parsley flowers
Associated Species: Petroselinum crispum (Garden Parsley)
Ceriana tridens
23 Jul 2024
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On parsley flowers
Associated Species: Petroselinum crispum (Garden Parsley)
Myathropa florea
(Yellow-haired Sun Fly)
(Yellow-haired Sun Fly)
20 Jul 2024
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On Garden Parsley flowers
Associated Species: Petroselinum crispum (Garden Parsley)
Eristalis arbustorum
(Eurasian Drone Fly)
(Eurasian Drone Fly)
20 Jul 2024
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View on iNaturalist
On garden parsley flowers
Associated Species: Petroselinum crispum (Garden Parsley)
Syrphini
26 Jun 2024
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On Eriogonum heracleoides flowers
Associated Species: Eriogonum heracleoides (Parsnipflower Buckwheat)
Phasiinae
25 Jun 2024
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On Common Yarrow flowers
Associated Species: Achillea millefolium (Common Yarrow)
Merodon equestris
(Narcissus Bulb Fly)
(Narcissus Bulb Fly)
19 Jun 2024
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On Geranium sanguineum flower
Associated Species: Geranium sanguineum (Bloody Crane's-Bill)
Conopidae
19 Jun 2024
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On Oregon Sunshine flowers
Associated Species: Eriophyllum lanatum (Common Woolly Sunflower)
Eristalis arbustorum
(Eurasian Drone Fly)
(Eurasian Drone Fly)
18 Jun 2024
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View on iNaturalist
On parsnipflower buckwheat flowers
Associated Species: Eriogonum heracleoides (Parsnipflower Buckwheat)
Tachinidae
(Bristle Flies)
(Bristle Flies)
18 Jun 2024
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On Parsnipflower Buckwheat (Eriogonum heracleoides) flowers
Associated Species: Eriogonum heracleoides (Parsnipflower Buckwheat)
Gymnosoma sp.
12 Jun 2024
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On Parsnipflower Buckwheat (Eriogonum heracleoides) flowers
Associated Species: Eriogonum heracleoides (Parsnipflower Buckwheat)
Tachinidae
(Bristle Flies)
(Bristle Flies)
10 Jun 2024
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View on iNaturalist
On buckwheat flowers
Associated Species: Eriogonum heracleoides (Parsnipflower Buckwheat)
Eupeodes fumipennis
(Western Aphideater)
(Western Aphideater)
1 Jun 2024
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Associated Species: Eriophyllum lanatum (Common Woolly Sunflower)
Anthomyia sp.
28 May 2024
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Associated Species: Eriophyllum lanatum (Common Woolly Sunflower)
Myopinae
12 May 2024
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On Douglas Hawthorn
Associated Species: Crataegus douglasii (Douglas Hawthorn)
Eristalini
(Rat-tail Maggot Flies)
(Rat-tail Maggot Flies)
12 May 2024
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Associated Species: Crataegus douglasii (Douglas Hawthorn)
Ceroxys latiusculus
(Narrow-Banded Picture-Winged Fly)
(Narrow-Banded Picture-Winged Fly)
16 Mar 2024
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On shovel handle next to compost.
Drosophilidae
(Vinegar and Fruit Flies)
(Vinegar and Fruit Flies)
29 Jan 2024
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From side of compost bin\n~ 3 mm
Nematocera
(Nematoceran Flies)
(Nematoceran Flies)
26 Aug 2023
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Malaise trap, length ~ 1.5 mm\r\n\r\nCecidomyiidae maybe?
Ceratopogonidae
(Biting Midges)
(Biting Midges)
22 Mar 2023
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Collected from the side of the shed. ~2.5 mm
Sciaridae
(Dark-winged Fungus Gnats)
(Dark-winged Fungus Gnats)
15 Jan 2023
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Just outside the door on the front porch, 5 deg C, ~2.5 mm
Sciaridae
(Dark-winged Fungus Gnats)
(Dark-winged Fungus Gnats)
12 Nov 2022
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On my desk inside house.\r\n~ 1.5 mm
Scaeva affinis
(White-bowed Smoothwing)
(White-bowed Smoothwing)
8 Jun 2022
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This adult emerged from a pupa that formed from a larva that I collected from an aphid-infested Ocean Spray bush. \r\nLarva: https://www.inaturalist.org/observations/118730071\r\nPupa: https://www.inaturalist.org/observations/119242836
Scaeva affinis
(White-bowed Smoothwing)
(White-bowed Smoothwing)
29 May 2022
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This pupa formed from this larva. I\'m keeping it to see what emerges.
Scaeva affinis
(White-bowed Smoothwing)
(White-bowed Smoothwing)
25 May 2022
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On Ocean Spray bush infected with Aphids. 20 mm
Syrphidae
(Hover Flies)
(Hover Flies)
25 May 2022
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On Ocean S[ray bush infested with Aphids. ~ 1 mm.
Ceroxys latiusculus
(Narrow-Banded Picture-Winged Fly)
(Narrow-Banded Picture-Winged Fly)
27 Mar 2022
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On shovel handle next to compost bin.
Mycetophilidae
(Fungus Gnats)
(Fungus Gnats)
2 Mar 2022
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On compost bin. ~ 4 mm\r\nThe last photos were taken after capture, freezing, and point mounting.\r\n\r\nSeemed to key out to subfamily Mycetophilinae, genus Anatella.
Psychodidae
(Moth Flies)
(Moth Flies)
1 Mar 2022
From compost pile
Sciaridae
(Dark-winged Fungus Gnats)
(Dark-winged Fungus Gnats)
16 Jan 2022
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Captured in the kitchen. Cooled in the fridge, then (a bit too long) in the freezer.\n~ 2.5 mm
Eristalis arbustorum
(Eurasian Drone Fly)
(Eurasian Drone Fly)
17 Sep 2020
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Looks like it might be Eristalis dimidiata. But I\'m not sure. What do you think @edanko?
Eupeodes sp.
(Aphideaters)
(Aphideaters)
10 Jul 2020
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Associated Species: Achillea millefolium (Common Yarrow)
Rhagoletis indifferens
14 Jul 2019
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Landed on my wife while she was picking cherries.
Cecidomyiidae
(Gall and Forest Midges)
(Gall and Forest Midges)
26 Apr 2019
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These little guys (~ 2mm) have been covering the leaves of Penstemon plants in my garden for the last few days. They seem to be stuck on the leaves, unable to fly. Most have died; the one on the left is one of the few still alive, but seems unable to ...
Cecidomyiidae
(Gall and Forest Midges)
(Gall and Forest Midges)
25 Apr 2019
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Tiny midge-like insects all over Penstemon leaves
Eristalis sp.
Subgenus Eoseristalis
(Drone Flies)
Subgenus Eoseristalis
(Drone Flies)
24 Jun 2018
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Eristalis hirta or E. nemorum?
Culex tarsalis
(Western Encephalitis Mosquito)
(Western Encephalitis Mosquito)
26 Dec 2017
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Mosquito hanging out on the kitchen wall.
Length 5 mm
Sargus bipunctatus
26 Oct 2017
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Found on wheelbarrow next to compost.
BugGuide ID Female
Medetera sp.
(Woodpecker Flies)
(Woodpecker Flies)
3 Jul 2017
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Tiny fly (~2 mm) on side of tomato garden
Eristalis nemorum
(Orange-spined Drone Fly)
(Orange-spined Drone Fly)
14 Jun 2017
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There is some disagreement about this on iNat.
E. hirta or nemorum?
On Physocarpus malvaceus (Mallow-leaf Ninebark) flowers.
Eristalis hirta
(Black-footed Drone Fly)
(Black-footed Drone Fly)
18 May 2017
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There is some disagreement and discussion about this observation on iNat, but the consensus seems to be Eristailis hirta.
Sciaridae
(Dark-winged Fungus Gnats)
(Dark-winged Fungus Gnats)
10 Jan 2017
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Length: 3 mm
The first photo was taken live on inside of window. The second was after I put it in the freezer for a half hour.
Pipizinae
(Pitheads & Kin)
(Pitheads & Kin)
2 Oct 2016
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Associated Species: Petroselinum crispum (Garden Parsley)
Syritta pipiens
(Common Compost Fly)
(Common Compost Fly)
2 Oct 2016
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Associated Species: Petroselinum crispum (Garden Parsley)
Gymnosoma sp.
28 Sep 2016
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Associated Species: Petroselinum crispum (Garden Parsley)
Syritta pipiens
(Common Compost Fly)
(Common Compost Fly)
28 Sep 2016
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Associated Species: Petroselinum crispum (Garden Parsley)
Callopistromyia annulipes
(Peacock Fly)
(Peacock Fly)
10 Sep 2016
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On front porch doing his wings-up peacock dance
BugGuide ID
Eupeodes fumipennis
(Western Aphideater)
(Western Aphideater)
5 Sep 2016
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On California Poppy flower
Associated Species: Eschscholzia californica (California Poppy)
Anthomyia procellaris
18 Aug 2016
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Several of these flies sit on top of stakes and on raspberry leaves in morning sun.
BugGuide ID Female
Associated Species: Rubus idaeus (Red Raspberry)
Condylostylus occidentalis
31 Jul 2016
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Small fly (~4 mm) darting around on surface of raspberry leaves
Associated Species: Rubus idaeus (Red Raspberry)
Calliphora vicina
(Blue Blowfly)
(Blue Blowfly)
27 Jul 2016
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Large fly (~13 mm) on inside window screen.
Hemipenthes sp.
21 Jul 2016
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On California Poppy
Associated Species: Eschscholzia californica (California Poppy)
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