Crawling Water Beetle



 

Common Name
Crawling Water Beetle
Category
Insects
ScientificName
Family Haliplidae
Kingdom
Animalia
Phylum
Arthropoda
Class
Insecta
Order
Coleoptera
Family
Haliplidae
Genus
Species
SubSpecies
 

 

Description
Body oval, tapering at each end; yellow, brown, or light-green with black spots; rows of tiny indentations running length of fore wings; large plates covering base of hind legs, seen on the under side; slender antennae on head
Size
0.15 – 0.18 in. (3.5 – 4 mm) long
Ecological Role
Crawling water beetles are common in a variety of aquatic environments, especially in the shallows of slow-moving streams and ponds. They are poor swimmers, and spend most of their time crawling over aquatic vegetation where they feed on algae and small invertebrates. Crawling water beetles are preyed upon by a variety of aquatic vertebrates and invertebrates, including fish, frogs, salamanders, dragonfly nymphs, and water bugs.
Fun Facts
Like some amphibians, the larvae of crawling water beetles breathe through their skin instead of through gills. Adults carry oxygen in a water bubble under the forewings and a second bubble beneath the hind legs. Several species of crawling water beetles live in Kentucky, and only experts can identify individual species. They are all similar in appearance and behavior.
Food
Algae, such as Spirogyra, Oedogonium, Hydrodictyon; aquatic plants, such as Elodea; aquatic invertebrates, such as worms and midge larvae 
Cover
 
Nest
 
Breeding
 
Eggs
 
Habitat
Ponds, streams, lakes
Kentucky Distribution
Statewide
Life Cycle
Body form changes completely during development (complex, or complete, metamorphosis) from egg to larva, to pupa, then adult; larvae are fully aquatic and crawls to the shore to pupate under a stone or similar protected area; about two months from egg to adult; adults are active spring through fall
Life Span
 
Life Stage
 
Reproduction
 
Seasonal Changes
Overwinter in the larval stage, buried in damp soil at water’s edge
Spawning
 
Status
Abundant
Uses
 
Voice
 
Young
 
What We Can Do
Like all aquatic insects, crawling water beetles depend on clean water to live. The disappearance of wetlands and the pollution of rivers and streams are a potential threat to these and all aquatic insects.
Host
 
Diagnosis and Control
 
Interesting Facts
 
Contributed By
 
Website