Question 1

What are the chances of seeing a Black-Margined Flower Fly in San Diego?

Accepted Answer

Rare. Under 5% of wildlife watchers report a Black-Margined Flower Fly sighting in San Diego on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 632nd most-seen of the 693 insects we can rate there. Over three days the chance rises to about 10%, if each day is a fresh chance.

Question 2

When is the best time to see a Black-Margined Flower Fly in San Diego?

Accepted Answer

Any time of year. In every month with enough records, under 5% of wildlife watchers report a Black-Margined Flower Fly in San Diego on a given day, so our monthly data shows no clear season.

Question 3

What time of day is best to see a Black-Margined Flower Fly?

Accepted Answer

Between 11 am and 2 pm. Across all the parks we cover, that three-hour window holds the most Black-Margined Flower Fly sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.

Question 4

Is San Diego the best place to see a Black-Margined Flower Fly?

Accepted Answer

11th of 11. Of the 11 cities where we can rate Black-Margined Flower Fly sightings, San Diego ranks 11th at under 5%. The best odds are in Sacramento (United States, about 20%), Portland (United States, about 10%) and Vancouver (Canada, about 10%).

Question 5

Which relatives of the Black-Margined Flower Fly live in San Diego?

Accepted Answer

Same family: Syrphidae. The closest relatives of the Black-Margined Flower Fly that you can see in San Diego (family Syrphidae, Hover Flies) are Oblique Streaktail (about 10%), Margined Calligrapher (about 10%) and Common Grass Skimmer (about 10%), with each one's daily chance of a sighting.

Question 6

Where does the Black-Margined Flower Fly sighting chance come from?

Accepted Answer

GBIF citizen-science records. It is estimated from how often the Black-Margined Flower Fly is recorded against all the insects logged in San Diego (5 verified sightings), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.

#	Park	Country	Daily sighting probability
1	Pacific Rim National Park Reserve	🇨🇦 Canada	~10%
2	Redwood National Park	🇺🇸 United States	~10%
3	Banff National Park	🇨🇦 Canada	~10%
4	Great Bear Rainforest	🇨🇦 Canada	~10%
5	Olympic National Park	🇺🇸 United States	~10%
6	Glacier National Park	🇺🇸 United States	~10%
7	Grand Teton National Park	🇺🇸 United States	~10%
8	Rocky Mountain National Park	🇺🇸 United States	<5%

#	City	Country	Daily sighting probability
1	Sacramento	🇺🇸 United States	~20%
2	Portland	🇺🇸 United States	~10%
3	Vancouver	🇨🇦 Canada	~10%
4	Seattle	🇺🇸 United States	~10%
5	Calgary	🇨🇦 Canada	~10%
6	Salt Lake City	🇺🇸 United States	~10%
7	San Francisco	🇺🇸 United States	~10%
8	Edmonton	🇨🇦 Canada	<5%
9	Los Angeles	🇺🇸 United States	<5%
10	Denver	🇺🇸 United States	<5%

Black-Margined Flower Fly

About the Black-Margined Flower Fly

Recent sightings of Black-Margined Flower Fly in San Diego

Global Distribution

Parks Where Found

Cities Where Found

Closest Relatives at San Diego

Oblique Streaktail

Margined Calligrapher

Common Grass Skimmer

Mexican Cactus Fly

Yellow-Spotted Bromeliad Fly

Large-Tailed Aphideater

Dioprosopa clavatus

Golden Plushback

Copestylum marginatum

Thick-Legged Hover Fly

Stripe-Eyed Lagoon Fly

Western Aphideater

Before you go