×
BugFinder Insects by State Spiders Butterflies & Moths Bees, Ants, & Wasps Beetles All Bugs Videos (YouTube)

Predaceous Diving Beetle (Acilius mediatus)


Detailing the physical features, habits, territorial reach and other identifying qualities of the Predaceous Diving Beetle



Loading SVG image placeholder
1/1
Image Credit: Alex -icycatelf- Bowen
Full-sized image of the Predaceous-Diving-Beetle-Acilius Thumbnail image of the Predaceous-Diving-Beetle-Acilius

This beetle was made for the water, and its a fast and agile swimmer in ponds, streams, and lakes.



Updated: 04/30/2020; Authored By Staff Writer; Content ©www.InsectIdentification.org
Predaceous Diving Beetles are also called water tigers. They eat a variety of aquatic prey like other insect larvae and naiads. This species has feathery legs that help it navigate through water. It is oval shaped and small. A gold sheen covers the head and upper half of the body, while the lower black half is decorated with a bright golden yellow zigzag line that crosses the bottom of the wing coverings. Smaller flecks of golden color are also seen closer to the tip of the abdomen. A dark ?M?-shaped line is stamped on the top of the head, and a dark line almost completely crosses the pronotum (neck area). Males have feet shaped like discs. Larvae look like armored worms with large pincers at the face.

When resting, this beetle may sit just under the water?s surface with its rear up sticking up. It is able to trap air bubbles under the elytra or wing coverings. It moves fluidly and quickly. It does have wings and can fly. This is useful in finding other freshwater habitats, even temporary ones created by rain or flooding. Look for them in small and large bodies of freshwater, especially near vegetation that grows out of the water. These areas are usually rich with small aquatic life.




General Characteristics
Capability, Shape, Texture/Pattern, Benefits, Dangers




Taxonomic Hierarchy
Species Breakdown
Kingdom: Animalia
  Phylum: Arthropoda
    Class: Insecta
      Order: Coleoptera
        Family: Dytiscidae
View More
          Genus: Acilius
View More
            Species: mediatus
Identifying Information
Size, Colors, Features
Scientific Name: Acilius mediatus
Category: Beetle
Size (Adult; Length): 10mm to 16mm (0.39" to 0.62")
Colorwheel Graphic Colors: black; yellow; gold
Descriptors: swimming; fins; gold zigzag; gold bottom; letter M on head; golden; water
Relative Size Comparison
Typical Size Between 10mm (0.4in) and 16mm (0.6in)
Lo: 10mm
Md: 13mm
Hi: 16mm
Territorial Map*
U.S., Canada, and Mexico
State of Alabama graphic
State of Arizona graphic
State of Arkansas graphic
State of California graphic
State of Colorado graphic
State of Delware graphic
State of Florida graphic
State of Georgia graphic
State of Idaho graphic
State of Illinois graphic
State of Indiana graphic
State of Iowa graphic
State of Kansas graphic
State of Kentucky graphic
State of Louisiana graphic
State of Maine graphic
State of Maryland graphic
State of Michigan graphic
State of Minnesota graphic
State of Mississippi graphic
State of Missouri graphic
State of Montana graphic
State of Nebraska graphic
State of Nevada graphic
State of New England graphic
State of New Jersey graphic
State of New Mexico graphic
State of New York graphic
State of North Carolina graphic
State of North Dakota graphic
State of Ohio graphic
State of Oklahoma graphic
State of Oregon graphic
State of Pennsylvania graphic
State of South Carolina graphic
State of South Dakota graphic
State of Tennessee graphic
State of Texas graphic
State of Utah graphic
State of Virginia graphic
State of Washington graphic
State of West Virginia graphic
State of Wisconsin graphic
State of Wyoming graphic
Canadian territory of Alberta graphic
Canadian territory of British Columbia graphic
Canadian territory of Manitoba graphic
Canadian territory of New Brunswick graphic
Canadian territory of Newfoundland and Labrador graphic
Canadian territory of Ontario graphic
Canadian territory of Quebec graphic
Canadian territory of Saskatchewan graphic
Territory map graphic of the country of Mexico
Contiguous United States shape map layer graphic
Alaska  
Hawaii  
Prince Edward Is.  
* MAP NOTES: The territorial heat map above showcases (in red) the states and territories of North America where the Predaceous Diving Beetle may be found (but is not limited to). This sort of data is useful when attempting to see concentrations of particular species across the continent as well as revealing possible migratory patterns over a species' given lifespan. Some insects are naturally confined by environment, weather, mating habits, food resources and the like while others see widespread expansion across most, or all, of North America. States/Territories shown above are a general indicator of areas inhabited by the Predaceous Diving Beetle. Insects generally go where they please, typically driven by diet, environmental changes, and / or mating habits.

Site Disclaimer  |  Privacy Policy  |  Cookies  |  Sitemap


Beetle Identification Butterfly Identification Caterpillar Identification Spider ID

www.InsectIdentification.org • Content ©2006- InsectIdentification.org • All Rights Reserved. The InsectIdentification.org logo, its written content, and watermarked photographs/imagery are unique to this website (unless where indicated) and is protected by all applicable domestic and international intellectual property laws. This resource uses publically-released information. Material presented throughout this website is for entertainment value and should not to be construed as usable for scientific research or medical advice (regarding bites, etc...).Please consult licensed, degreed professionals for such information. By submitting images to us (InsectIdentification.org) you acknowledge that you have read and understood our Site Disclaimer as it pertains to "User-Submitted Content". When emailing please include your location and the general estimated size of the specimen in question if possible. Please direct all inquiries and comments to insectidentification AT gmail.com.

www.InsectIdentification.org • All Rights Reserved • Content ©2006-

Facebook Logo YouTube Logo