Dytiscidae (Predaceous Diving Beetles)

Species in this group

Allodessus bistrigatus

Daily sighting probability ~10% · With luck

Cybister fimbriolatus

Daily sighting probability ~10% · With luck

Mystonectes panaminti

Daily sighting probability ~10% · With luck

Cybister lateralimarginalis

Daily sighting probability ~10% · With luck

Thermonectus marmoratus

Daily sighting probability ~10% · With luck

Rhantus suturalis

Daily sighting probability ~10% · With luck

Acilius sulcatus

Daily sighting probability ~10% · With luck

Neobidessus pullus

Daily sighting probability ~10% · With luck

Hydaticus bimarginatus

Daily sighting probability ~10% · With luck

Laccophilus pictus

Daily sighting probability ~10% · With luck

Hydaticus suffusus

Daily sighting probability ~10% · With luck

Acilius mediatus

Daily sighting probability <5% · Rare

Acilius abbreviatus

Daily sighting probability <5% · Rare

Dytiscus verticalis

Daily sighting probability <5% · Rare

Dytiscus marginalis

Daily sighting probability <5% · Rare

Dytiscus semisulcatus

Daily sighting probability <5% · Rare

Colymbetes fuscus

Daily sighting probability <5% · Rare

See all 17 species Show fewer

Daily sighting probability by month

Probability-weighted average across the group's species

<5%

Jan

<5%

Feb

<5%

Mar

<5%

Apr

~10%

May

~10%

Jun

~10%

Jul

~10%

Aug

<5%

Sep

<5%

Oct

~10%

Nov

<5%

Dec

When they're spotted

When the group's species are recorded (aggregated)

Where to see Predaceous Diving Beetles

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

Parks Ranked

#	Park	Country	Species	Daily sighting probability
1	Big Cypress National Preserve	🇺🇸 United States	3 of 17	~20%
	Fringed Diving Beetle			~10%
	Neobidessus pullus			~10%
	Hydaticus bimarginatus			~10%
2	Wadden Sea National Park	🇩🇪 Germany	4 of 17	~10%
	Great Diving Beetle			<5%
	Peardrop Beetle			<5%
	Black-Bellied Great Diving-Beetle			<5%
	Large-Grooved Diving Beetle			<5%
3	Saguaro National Park	🇺🇸 United States	2 of 17	~10%
	Sunburst Diving Beetle			~10%
	Laccophilus pictus			~10%
4	Grampians National Park	🇦🇺 Australia	1 of 17	~10%
	Orange Sutured Diving Beetle			~10%
5	Padre Island National Seashore	🇺🇸 United States	1 of 17	~10%
	Fringed Diving Beetle			~10%
6	Death Valley National Park	🇺🇸 United States	1 of 17	~10%
	Mystonectes panaminti			~10%
7	Fertő-Hanság National Park	🇭🇺 Hungary	1 of 17	~10%
	Peardrop Beetle			~10%
8	Cumbres de Monterrey National Park	🇲🇽 Mexico	2 of 17	~10%
	Sunburst Diving Beetle			<5%
	Laccophilus pictus			<5%
9	Egmont National Park	🇳🇿 New Zealand	1 of 17	~10%
	Cosmopolitan Diving Beetle			~10%
10	Snowdonia National Park	🇬🇧 United Kingdom	1 of 17	~10%
	Lesser Diving-Beetle			~10%
11	Grand Canyon National Park	🇺🇸 United States	1 of 17	~10%
	Sunburst Diving Beetle			~10%
12	Daintree National Park	🇦🇺 Australia	1 of 17	~10%
	Hydaticus suffusus			~10%
13	Shenandoah National Park	🇺🇸 United States	1 of 17	<5%
	Acilius mediatus			<5%
14	Great Otway National Park	🇦🇺 Australia	1 of 17	<5%
	Cosmopolitan Diving Beetle			<5%
15	Great Bear Rainforest	🇨🇦 Canada	1 of 17	<5%
	Abbreviated Predaceous Diving Beetle			<5%
16	Acadia National Park	🇺🇸 United States	1 of 17	<5%
	Vertical Diving Beetle			<5%
17	Rocky Mountain National Park	🇺🇸 United States	1 of 17	<5%
	Abbreviated Predaceous Diving Beetle			<5%
18	Pyrénées National Park	🇫🇷 France	1 of 17	<5%
	Great Diving Beetle			<5%

Cities Ranked

#	City	Country	Species	Daily sighting probability
1	London	🇬🇧 United Kingdom	3 of 17	~10%
	Large-Grooved Diving Beetle			<5%
	Lesser Diving-Beetle			<5%
	Great Diving Beetle			<5%
2	Dallas	🇺🇸 United States	3 of 17	~10%
	Fringed Diving Beetle			<5%
	Neobidessus pullus			<5%
	Hydaticus bimarginatus			<5%
3	Birmingham	🇬🇧 United Kingdom	2 of 17	~10%
	Great Diving Beetle			<5%
	Large-Grooved Diving Beetle			<5%
4	Moscow	🇷🇺 Russia	3 of 17	~10%
	Great Diving Beetle			<5%
	Peardrop Beetle			<5%
	Lesser Diving-Beetle			<5%
5	Houston	🇺🇸 United States	2 of 17	~10%
	Hydaticus bimarginatus			<5%
	Fringed Diving Beetle			<5%
6	Berlin	🇩🇪 Germany	2 of 17	~10%
	Lesser Diving-Beetle			<5%
	Large-Grooved Diving Beetle			<5%
7	Kyiv	🇺🇦 Ukraine	1 of 17	~10%
	Peardrop Beetle			~10%
8	Vienna	🇦🇹 Austria	2 of 17	~10%
	Peardrop Beetle			<5%
	Lesser Diving-Beetle			<5%
9	Novosibirsk	🇷🇺 Russia	1 of 17	<5%
	Lesser Diving-Beetle			<5%
10	Beijing	🇨🇳 China	1 of 17	<5%
	Cosmopolitan Diving Beetle			<5%
11	Melbourne	🇦🇺 Australia	1 of 17	<5%
	Cosmopolitan Diving Beetle			<5%
12	Seoul	🇰🇷 South Korea	1 of 17	<5%
	Cosmopolitan Diving Beetle			<5%
13	Nizhny Novgorod	🇷🇺 Russia	1 of 17	<5%
	Great Diving Beetle			<5%
14	Auckland	🇳🇿 New Zealand	1 of 17	<5%
	Cosmopolitan Diving Beetle			<5%
15	Porto	🇵🇹 Portugal	1 of 17	<5%
	Large-Grooved Diving Beetle			<5%
16	Brisbane	🇦🇺 Australia	1 of 17	<5%
	Cosmopolitan Diving Beetle			<5%
17	Orlando	🇺🇸 United States	1 of 17	<5%
	Fringed Diving Beetle			<5%
18	Sydney	🇦🇺 Australia	1 of 17	<5%
	Cosmopolitan Diving Beetle			<5%
19	Vancouver	🇨🇦 Canada	1 of 17	<5%
	Abbreviated Predaceous Diving Beetle			<5%
20	Tokyo	🇯🇵 Japan	1 of 17	<5%
	Cosmopolitan Diving Beetle			<5%
21	San Antonio	🇺🇸 United States	1 of 17	<5%
	Fringed Diving Beetle			<5%
22	Montreal	🇨🇦 Canada	1 of 17	<5%
	Vertical Diving Beetle			<5%
23	Washington	🇺🇸 United States	1 of 17	<5%
	Acilius mediatus			<5%
24	New York City	🇺🇸 United States	1 of 17	<5%
	Fringed Diving Beetle			<5%

Predaceous Diving Beetles

Species in this group

Orange Sutured Diving Beetle

Fringed Diving Beetle

Mystonectes panaminti

Peardrop Beetle

Sunburst Diving Beetle

Cosmopolitan Diving Beetle

Lesser Diving-Beetle

Neobidessus pullus

Hydaticus bimarginatus

Laccophilus pictus

Hydaticus suffusus

Acilius mediatus

Abbreviated Predaceous Diving Beetle

Vertical Diving Beetle

Great Diving Beetle

Black-Bellied Great Diving-Beetle

Large-Grooved Diving Beetle

Daily sighting probability by month

When they're spotted

Where to see Predaceous Diving Beetles

Parks Ranked

Cities Ranked