Conopidae (Thick-headed Flies)

Species in this group

Physoconops connectens

Daily sighting probability ~10% · With luck

Physocephala tibialis

Daily sighting probability ~10% · With luck

Stylogaster neglecta

Daily sighting probability ~10% · With luck

Conops quadrifasciatus

Daily sighting probability ~10% · With luck

Thecophora pilosa

Daily sighting probability ~10% · With luck

Sicus ferrugineus

Daily sighting probability <5% · Rare

Physocephala sagittaria

Daily sighting probability <5% · Rare

Physocephala burgessi

Daily sighting probability <5% · Rare

Daily sighting probability by month

Probability-weighted average across the group's species

<5%

Jan

<5%

Feb

<5%

Mar

<5%

Apr

<5%

May

<5%

Jun

~10%

Jul

<5%

Aug

<5%

Sep

<5%

Oct

~10%

Nov

~10%

Dec

When they're spotted

When the group's species are recorded (aggregated)

Where to see Thick-headed Flies

Warmer areas are where this group is recorded most often. Our parks Our cities

Parks Ranked

#	Park	Country	Species	Daily sighting probability
1	Shenandoah National Park	🇺🇸 United States	3 of 8	~20%
	Common Eastern Physocephala			~10%
	Stylogaster neglecta			~10%
	Physocephala sagittaria			<5%
2	Ría Lagartos Biosphere Reserve	🇲🇽 Mexico	1 of 8	~10%
	🦋 Physoconops connectens			~10%
3	Great Smoky Mountains National Park	🇺🇸 United States	1 of 8	~10%
	Common Eastern Physocephala			~10%
4	Cairngorms National Park	🇬🇧 United Kingdom	1 of 8	~10%
	Conops quadrifasciatus			~10%
5	Addo Elephant National Park	🇿🇦 South Africa	1 of 8	~10%
	Thecophora pilosa			~10%
6	Bavarian Forest National Park	🇩🇪 Germany	1 of 8	<5%
	Ferruginous Bee-Grabber			<5%
7	Olympic National Park	🇺🇸 United States	1 of 8	<5%
	Physocephala burgessi			<5%

Cities Ranked

#	City	Country	Species	Daily sighting probability
1	London	🇬🇧 United Kingdom	2 of 8	~10%
	Ferruginous Bee-Grabber			~10%
	Conops quadrifasciatus			<5%
2	Boston	🇺🇸 United States	2 of 8	~10%
	Common Eastern Physocephala			~10%
	Stylogaster neglecta			<5%
3	Birmingham	🇬🇧 United Kingdom	2 of 8	~10%
	Ferruginous Bee-Grabber			~10%
	Conops quadrifasciatus			<5%
4	Liverpool	🇬🇧 United Kingdom	2 of 8	~10%
	Ferruginous Bee-Grabber			~10%
	Conops quadrifasciatus			<5%
5	Minneapolis [Saint Paul]	🇺🇸 United States	2 of 8	~10%
	Common Eastern Physocephala			~10%
	Stylogaster neglecta			<5%
6	New York City	🇺🇸 United States	3 of 8	~10%
	Common Eastern Physocephala			~10%
	Physocephala sagittaria			<5%
	Stylogaster neglecta			<5%
7	Warsaw	🇵🇱 Poland	2 of 8	~10%
	Conops quadrifasciatus			~10%
	Ferruginous Bee-Grabber			<5%
8	Helsinki	🇫🇮 Finland	2 of 8	~10%
	Conops quadrifasciatus			<5%
	Ferruginous Bee-Grabber			<5%
9	Washington	🇺🇸 United States	2 of 8	~10%
	Common Eastern Physocephala			<5%
	Physocephala sagittaria			<5%
10	Toronto	🇨🇦 Canada	2 of 8	~10%
	Common Eastern Physocephala			<5%
	Stylogaster neglecta			<5%
11	Philadelphia	🇺🇸 United States	1 of 8	~10%
	Common Eastern Physocephala			~10%
12	Baltimore	🇺🇸 United States	1 of 8	~10%
	Common Eastern Physocephala			~10%
13	Seattle	🇺🇸 United States	1 of 8	<5%
	Physocephala burgessi			<5%
14	Brussels	🇧🇪 Belgium	1 of 8	<5%
	Ferruginous Bee-Grabber			<5%
15	Moscow	🇷🇺 Russia	2 of 8	<5%
	Ferruginous Bee-Grabber			<5%
	Conops quadrifasciatus			<5%
16	Portland	🇺🇸 United States	1 of 8	<5%
	Physocephala burgessi			<5%
17	Berlin	🇩🇪 Germany	1 of 8	<5%
	Ferruginous Bee-Grabber			<5%
18	Manchester	🇬🇧 United Kingdom	1 of 8	<5%
	Ferruginous Bee-Grabber			<5%
19	Chicago	🇺🇸 United States	1 of 8	<5%
	Common Eastern Physocephala			<5%
20	Paris	🇫🇷 France	1 of 8	<5%
	Ferruginous Bee-Grabber			<5%
21	San Francisco	🇺🇸 United States	1 of 8	<5%
	Physocephala burgessi			<5%
22	Vancouver	🇨🇦 Canada	1 of 8	<5%
	Physocephala burgessi			<5%
23	Montreal	🇨🇦 Canada	1 of 8	<5%
	Stylogaster neglecta			<5%

Thick-headed Flies

Species in this group

Physoconops connectens

Common Eastern Physocephala

Stylogaster neglecta

Conops quadrifasciatus

Thecophora pilosa

Ferruginous Bee-Grabber

Physocephala sagittaria

Physocephala burgessi

Daily sighting probability by month

When they're spotted

Where to see Thick-headed Flies

Parks Ranked

Cities Ranked