Beetles and Weevils: Coleoptera
Great Water Beetle (dytiscus Marginalis): Species Accounts
Physical characteristics: Adults measure up to 1.4 inches (35 millimeters) in length. The midsection and elytra have pale borders. The elytra of the male are smooth, while those of the female are grooved.
Geographic range: This species is found in Europe.
Biome: Lake and pond
Habitat: Great water beetles live in standing bodies of water with muddy bottoms.
Diet: They eat other aquatic insects, clams, snails, crustaceans, and even tadpoles and small fish.
Behavior and reproduction: Great water beetles breathe underwater by breaking the water surface with the tip of the abdomen and trapping an air bubble under the elytra. Females lay their eggs singly on the stems of aquatic plants. The larvae molt three times in thirty-five to forty days. Mature larvae pupate in damp soil next to water. There is one generation produced each year.
Great water beetles and people: This species is one of the largest and most studied of all water beetles in Europe.
Conservation status: This species is not listed as endangered or threatened. ∎
Additional topics
- Beetles and Weevils: Coleoptera - European Stag Beetle (lucanus Cervus): Species Accounts
- Beetles and Weevils: Coleoptera - Giraffe-necked Weevil (trachelophorus Giraffa): Species Accounts
- Other Free Encyclopedias
Animal Life ResourceInsects and SpidersBeetles and Weevils: Coleoptera - Physical Characteristics, Habitat, Diet, Behavior And Reproduction, Beetles And People, Conservation Status - GEOGRAPHIC RANGE