Giant Black Water Beetle Hydrophilus triangularis Say, 1823    Synonyms: Giant Diving Scavenger Beetle, Giant Water Scavenger.
Kingdom Animalia   >   Phylum Arthropoda   >   Class Insecta   >   Order Coleoptera   >   Family Hydrophilidae   >   Genus Hydrophilus   

Status:

This large and distinctive species is widespread in North America. It occurs near water and frequently comes to lights.

Description:

H. ovatus is smaller and has a bilobed prosternum.

There are 25 records in the project database.

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A Giant Black Water Beetle in Talbot Co., Maryland (5/22/2014). Photo by Jim Brighton. (MBP list)

A Giant Black Water Beetle in Worcester Co., Maryland (7/10/2013). Photo by Scott Housten. (MBP list)

A Giant Black Water Beetle in Worcester Co., Maryland (4/3/2015). Photo by Mike Burchett. (MBP list)

Giant Black Water Beetle in Anne Arundel Co., Maryland (9/3/2019). (c) Timothy Reichard, all rights reserved. Photo by Timothy Reichard. (MBP list)

A Giant Black Water Beetle in Somerset Co., Maryland (8/4/2007). Determined by Dr. Arthur Evans. Photo by Lance Biechele. (MBP list)

Giant Black Water Beetle in Queen Anne's Co., Maryland (5/13/2007). (c) Hans Holbrook, some rights reserved (CC BY-NC). Photo by Hans Holbrook. (MBP list)

Giant Black Water Beetle in Calvert Co., Maryland (4/7/2021). (c) jtylerbell, some rights reserved (CC BY-NC). Photo by Tyler Bell. (MBP list)

Giant Black Water Beetle in Calvert Co., Maryland (4/7/2021). (c) jtylerbell, some rights reserved (CC BY-NC). Photo by Tyler Bell. (MBP list)

Giant Black Water Beetle in Baltimore Co., Maryland (4/26/2020). (c) laurabankey, some rights reserved (CC BY-NC). Photo by laurabankey via iNaturalist. (MBP list)

Giant Black Water Beetle in Dorchester Co., Maryland (8/6/2021). (c) Jim Brighton, some rights reserved (CC BY-NC). Photo by Jim Brighton. (MBP list)

A Giant Black Water Beetle in Kent Co., Maryland (8/6/2021). Determined by Matthew Pintar, Ph.D., Florida International University. Photo by Dave Webb. (MBP list)

Giant Black Water Beetle in Dorchester Co., Maryland (8/6/2021). (c) tomfeild, some rights reserved (CC BY-NC). Photo by Tom Feild. (MBP list)

Giant Black Water Beetle in Anne Arundel Co., Maryland (9/3/2019). (c) Timothy Reichard, all rights reserved. Photo by Timothy Reichard. (MBP list)

Giant Black Water Beetle in Dorchester Co., Maryland (8/6/2021). (c) tomfeild, some rights reserved (CC BY-NC). Photo by Tom Feild. (MBP list)

Giant Black Water Beetle in Garrett Co., Maryland (10/16/2020). (c) Ashley Rodeheaver, all rights reserved. Photo by Ashley Rodeheaver. (MBP list)

Giant Black Water Beetle in Dorchester Co., Maryland (8/6/2021). (c) tomfeild, some rights reserved (CC BY-NC). Photo by Tom Feild. (MBP list)

A Giant Black Water Beetle in Dorchester Co., Maryland (8/16/2018). Photo by Mark Etheridge. (MBP list)

Giant Black Water Beetle in Garrett Co., Maryland (10/16/2020). (c) Ashley Rodeheaver, all rights reserved. Photo by Ashley Rodeheaver. (MBP list)

Giant Black Water Beetle in Dorchester Co., Maryland (8/6/2021). (c) tomfeild, some rights reserved (CC BY-NC). Photo by Tom Feild. (MBP list)

Giant Black Water Beetle in Dorchester Co., Maryland (8/6/2021). (c) Timothy Reichard, all rights reserved. Photo by Timothy Reichard. (MBP list)

Giant Black Water Beetle in Garrett Co., Maryland (Date obscured). (c) Kyle Klotz, all rights reserved. Photo by Kyle Klotz. (MBP list)

Giant Black Water Beetle in Frederick Co., Maryland (4/25/2019). (c) botanygirl, some rights reserved (CC BY). Photo by botanygirl via iNaturalist. (MBP list)

Giant Black Water Beetle in Garrett Co., Maryland (10/16/2020). (c) Ashley Rodeheaver, all rights reserved. Photo by Ashley Rodeheaver. (MBP list)

Giant Black Water Beetle in Frederick Co., Maryland (4/25/2019). (c) botanygirl, some rights reserved (CC BY). Photo by botanygirl via iNaturalist. (MBP list)

Giant Black Water Beetle in Frederick Co., Maryland (4/25/2019). (c) botanygirl, some rights reserved (CC BY). Photo by botanygirl via iNaturalist. (MBP list)

Giant Black Water Beetle in Garrett Co., Maryland (Date obscured). (c) Kyle Klotz, all rights reserved. Photo by Kyle Klotz. (MBP list)

Giant Black Water Beetle in Prince George's Co., Maryland (6/10/2018). (c) jkfarkas, some rights reserved (CC BY-NC). Photo by jkfarkas via iNaturalist. (MBP list)

Giant Black Water Beetle in Prince George's Co., Maryland (6/10/2018). (c) jkfarkas, some rights reserved (CC BY-NC). Photo by jkfarkas via iNaturalist. (MBP list)


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