#BLACKflyDAY
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watcherpond.bsky.social
Late to the #blackflyday with an unknown caddisfly
Caddisfly, species not IDed
November 30, 2024 at 10:05 PM
adrienbalg.bsky.social
Sepsis fulgens est une petite mouche qui mime les fourmis (sûrement une Lasius) grâce à sa couleur noire et à ses pétiole (la taille de guêpe typique des Hyménoptères) et post-pétiole (typique des fourmis).

La larve coprophage apprécie grandement les bouses de vache.

#BlackFlyDay
Posée sur une feuille de rosier, une petite mouche noire se tient les ailes écartées, ailes qu'elle a translucides à l'exception des ptérostigmas noirs. Elle présente un rétrécissement entre le thorax et l'abdomen nommé pétiole (typique des Hyménoptères) suivi d'un deuxième rétrécissement nommé post-pétiole (typique des fourmis). Crédits : Adrien BàlG CC-By-Sa
November 30, 2024 at 8:48 AM
mrine.bsky.social
#blackFLYday

Golden-backed Snipe fly.
Golden-back Snipe Fly on the underside of a green leaf.
November 30, 2024 at 4:59 AM
bertonemyia.bsky.social
Only a little bit left of #BlackFlyDay so here are two *completely* black #flies.

#Bibionidae: #Penthetria heteroptera
#Tipulidae: #Eugnophomyia luctuosa

Wake Co. North Carolina
An elongate completely black fly with big eyes long legs resting on a leaf An elongate completely black fly with long legs resting on bark
November 30, 2024 at 4:55 AM
dougtaron.bsky.social
Happy #BlackFlyday.
November 30, 2024 at 4:49 AM
jtkindt.bsky.social
Blackfly day almost over- here are some (mostly) black flies, though not Simuliids, all from my neighborhood near Atlanta. #blackflyday
Eudioctria robber fly with aphid prey on leaf Mating orange and black Trichopoda pennipes feather-legged flies on a blade of grass Black conopid thick-headed fly, genus Thecophora, on yellow flower Sylvicola alternatus wood gnat with patterned wings
November 30, 2024 at 4:06 AM
bugeric.bsky.social
I hear it's #BlackFlyDay, so enjoy an adult Hairy Maggot Blow Fly, Chrysomya rufifacies, from our home in Leavenworth, Kansas, USA, September 30, 2022. I love the brilliant metallic colors of some of the blow flies.
Fairly large, robust fly, about 12-15 millimeters, big red eyes, brilliant metallic green thorax, and metallic sky blue abdomen with narrow black bands delineating the abdominal segments. Wings clear. Perched on a leaf in full sun.
November 30, 2024 at 1:08 AM
drgentian.bsky.social
In honor of #BlackFlyDay and my Dad, a dipterologist, I present to you the black onion fly (Tritoxa flexa), seen in my garden. Those wings! I love the scientific name too, like a play on 'toxic flexibility' :). #iNaturalist #entomology #backyarddiversity

www.inaturalist.org/observations...
Black Onion Fly (Tritoxa flexa)
Black Onion Fly from Skillman, Montgomery, NJ, USA on June 29, 2020 at 06:10 PM by Lena Struwe
www.inaturalist.org
November 30, 2024 at 12:00 AM
smackmegthermo.bsky.social
Sorry. Trying again. A fly, but not black. Bombylius Major - bee fly. Collected while manually removing bull thistle. Released unharmed. #BlackFlyDay
A bee-fly held in a gloved hand. The fly has a furry light brown body with transparent wings and a pointy proboscis.
November 29, 2024 at 11:41 PM
jillwhitelock.bsky.social
Fly on Mahonia. #BlackFlyDay
A black fly with red eyes on yellow Mahonia flowers.
November 29, 2024 at 10:59 PM
smackmegthermo.bsky.social
Do beetles count? Spruce Beetle. #BlackFlyDay
A spruce beetle on a grey faded picnic bench-top. The beetle is mostly black with long antennae. The abdomen of the beetle is bullet shaped and larger than the thorax and head.
November 29, 2024 at 10:46 PM
jayfrompa.bsky.social
Here's the coolest fly I've seen, Rainieria Antennaepes (according to inat). It's a stilt legged fly that holds its front 2 legs forward to look like antenna, to mimic wasps. It totally fooled me until I took a closer look. #BlackFlyDay #Photography #Nature #Invertebrates
A tiny thin long black fly with, large dull red eyes, long legs banded with dull orange, and wings folded close over its abdomen. Another picture of the fly, this time it is holding its 2 white tipped front legs out and clasping them together.
November 29, 2024 at 10:43 PM
snks.bsky.social
Und da die Fliege eben ne Mücke war gibts jetzt noch ne schwarze Fliege für den #BlackFlyDay:

#Anthrax_anthrax bei der Eiablage am Hotel.
November 29, 2024 at 10:30 PM
snks.bsky.social
Märzfliege für den #BlackFlyDay

(Mit freundlicher Erinnerung von @moremilvus.bsky.social )
November 29, 2024 at 10:11 PM
moremilvus.bsky.social
Aber heute ist doch BlackFlyDay und nicht BlackKäferDay😉
November 29, 2024 at 10:07 PM
lifeonaquarteracre.bsky.social
Here are some (mostly) black flies that have visited our yard.
#BlackFlyDay
A thick-headed fly (Conopidae) in the genus Thecophora on oregano flowers. A Western Wasp Fly (Ceriana tridens) in the family Syrphidae on parsley flowers. The fly is mostly black with yellow stripes - and very cool pointed antennae. A Woodpecker Fly in the genus Medetera standing upright on a spruce stump. It seems to have longer legs in front, so it almost looks like it's standing on its hind legs. And it has spiffy white whiskers under its eyes. A Peacock Fly (Callopistromyia annulipes) in the family Ulidiidae landed on our front porch and did its wings-up dance. It has an intricately patterned wings and is cut as a bug.
November 29, 2024 at 9:59 PM
mariannedenton.bsky.social
The tiniest Robberfly eating an even tinier somesortaother something.
#BlackFlyDay
A black robber fly with iridescent wings and copper colored eyes eating another smaller insect of some type. The robber fly is perched on the thin end of a sagebrush branch.
November 29, 2024 at 9:47 PM
mariannedenton.bsky.social
Just an adorable Tachinid Fly exploring wild camomile on a summer's day.
#BlackFlyDay
🌿
Large black fly with a spikey body and transparent wings gathering pollen and nectar from a daisy-like flower with a yellow cushion center and multiple white petals. The fly is looking directly at the camera. Large black fly with a spikey body and transparent wings gathering pollen and nectar from a daisy-like flower with a yellow cushion center and multiple white petals. The view is side from the back as the fly crawls from one flower to another.
November 29, 2024 at 9:33 PM
lucycorrander.bsky.social
Would a Green Bottle fly in black and white do for #BlackflyDay ?
Dorset. April 2016
Green Bottle fly on Alexanders leaf - in black and white . . showing its wings and the hairs on its back. April 2016
November 29, 2024 at 9:05 PM
amohr.org
Happy #blackflyday ! I never did ID this one. Sept '24 Puget Sound. #flies #insects #inverts #macrophotography
A shiny black fly with creamy-gold accents on its fuzzy face and wing roots. It's visiting a purple aster flower.
November 29, 2024 at 9:02 PM
denisewawman.bsky.social
For #blackflyday here’s a particularly dark, Ornithomya chloropus. Hippoboscids vary a lot in colour, but in the UK O. chloropus is usually much darker than the other species & has dark markings underneath on the thorax and head (on the mesothoracic basisternum & lateral gena to be precise).
A black fly
November 29, 2024 at 8:52 PM
miketoms.bsky.social
This #BlackFlyDay get two for the price of one. Dune Robberfly (Winterton Dunes, Norfolk) and prey (id welcome).
Dune Robberfly and prey, photographed at Winterton Dunes, Norfolk UK
November 29, 2024 at 8:37 PM
jencross.bsky.social
Snipe fly bringing some bling for #BlackFlyDay
(Chrysopilus sp.)
BellaVista Cloud Forest Reserve, Ecuador
A fly with smoky gold translucent wings with black venation, blue eyes, and a black and gold body.
November 29, 2024 at 8:36 PM
sjthomasbotany.bsky.social
Apparently #BlackFlyDay so here is one - Lonchaea fugax a common lance-fly from the other year

#invertebrates #entomology #diptera
Lateral macro of a small shiny black fly with yellowish wing bases
November 29, 2024 at 8:14 PM
pbrand.bsky.social
#BlackFlyDay
November 29, 2024 at 7:27 PM