Family

Water Scavenger Beetles

Hydrophilidae

8 species in our catalog · found in 5 parks

KingdomAnimalia (Animals)
PhylumArthropoda (Arthropods)
ClassInsecta (Insects)
OrderColeoptera (Beetles)
FamilyHydrophilidae (Water Scavenger Beetles)

Species in this group

Helobata larvalis

Daily sighting probability ~10% · With luck

Hydrobiomorpha casta

Daily sighting probability ~10% · With luck

Hydrophilus ovatus

Daily sighting probability ~10% · With luck

Tropisternus collaris

Daily sighting probability ~10% · With luck

Tropisternus lateralis

Daily sighting probability ~10% · With luck

Hydrophilus triangularis

Daily sighting probability ~10% · With luck

Sphaeridium scarabaeoides

Daily sighting probability <5% · Rare

Hydrophilus piceus

Daily sighting probability <5% · Rare

Daily sighting probability by month

Probability-weighted average across the group's species

<5%

Jan

<5%

Feb

~10%

Mar

<5%

Apr

~10%

May

~10%

Jun

~10%

Jul

<5%

Aug

<5%

Sep

<5%

Oct

<5%

Nov

<5%

Dec

When they're spotted

When the group's species are recorded (aggregated)

Where to see Water Scavenger 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	5 of 8	~30%
	Helobata larvalis			~10%
	Hydrobiomorpha casta			~10%
	Hydrophilus ovatus			~10%
	Tropisternus collaris			~10%
	Lateral-Lined Water Beetle			~10%
2	Everglades National Park	🇺🇸 United States	3 of 8	~10%
	Hydrobiomorpha casta			~10%
	Helobata larvalis			~10%
	Tropisternus collaris			<5%
3	Death Valley National Park	🇺🇸 United States	1 of 8	~10%
	Giant Water Scavenger Beetle			~10%
4	Pyrénées National Park	🇫🇷 France	1 of 8	<5%
	Sphaeridium scarabaeoides			<5%
5	Wadden Sea National Park	🇩🇪 Germany	1 of 8	<5%
	Great Silver Water Beetle			<5%

Cities Ranked

#	City	Country	Species	Daily sighting probability
1	Houston	🇺🇸 United States	4 of 8	~10%
	Lateral-Lined Water Beetle			<5%
	Tropisternus collaris			<5%
	Giant Water Scavenger Beetle			<5%
	Helobata larvalis			<5%
2	Dallas	🇺🇸 United States	3 of 8	~10%
	Lateral-Lined Water Beetle			<5%
	Tropisternus collaris			<5%
	Giant Water Scavenger Beetle			<5%
3	Austin	🇺🇸 United States	3 of 8	~10%
	Tropisternus collaris			<5%
	Lateral-Lined Water Beetle			<5%
	Giant Water Scavenger Beetle			<5%
4	Sacramento	🇺🇸 United States	2 of 8	~10%
	Giant Water Scavenger Beetle			~10%
	Lateral-Lined Water Beetle			<5%
5	Salt Lake City	🇺🇸 United States	2 of 8	~10%
	Giant Water Scavenger Beetle			<5%
	Lateral-Lined Water Beetle			<5%
6	Chicago	🇺🇸 United States	2 of 8	~10%
	Lateral-Lined Water Beetle			<5%
	Giant Water Scavenger Beetle			<5%
7	Miami	🇺🇸 United States	2 of 8	~10%
	Tropisternus collaris			<5%
	Lateral-Lined Water Beetle			<5%
8	Toronto	🇨🇦 Canada	2 of 8	<5%
	Lateral-Lined Water Beetle			<5%
	Giant Water Scavenger Beetle			<5%
9	Washington	🇺🇸 United States	2 of 8	<5%
	Lateral-Lined Water Beetle			<5%
	Tropisternus collaris			<5%
10	New York City	🇺🇸 United States	2 of 8	<5%
	Lateral-Lined Water Beetle			<5%
	Giant Water Scavenger Beetle			<5%
11	Buenos Aires	🇦🇷 Argentina	1 of 8	<5%
	Lateral-Lined Water Beetle			<5%
12	San Francisco	🇺🇸 United States	1 of 8	<5%
	Giant Water Scavenger Beetle			<5%
13	Vancouver	🇨🇦 Canada	1 of 8	<5%
	Lateral-Lined Water Beetle			<5%
14	Denver	🇺🇸 United States	1 of 8	<5%
	Lateral-Lined Water Beetle			<5%
15	Minneapolis [Saint Paul]	🇺🇸 United States	1 of 8	<5%
	Lateral-Lined Water Beetle			<5%
16	San Antonio	🇺🇸 United States	1 of 8	<5%
	Giant Water Scavenger Beetle			<5%

Water Scavenger Beetles

Species in this group

Helobata larvalis

Hydrobiomorpha casta

Hydrophilus ovatus

Tropisternus collaris

Lateral-Lined Water Beetle

Giant Water Scavenger Beetle

Sphaeridium scarabaeoides

Great Silver Water Beetle

Daily sighting probability by month

When they're spotted

Where to see Water Scavenger Beetles

Parks Ranked

Cities Ranked