Habitat: Adults will also feed on any carrion they find. Whirligig beetles possess unique adaptation in the form of horizontally divided eyes. Predaceous Diving Beetle. Where? Moreover, they create their own vibrations and process the returning echoes to detect prey or find mates. Microscopic hairs on the bases of legs and bottom of the body repel the water and hold layer of air. Water scavenger beetles, with about 2000 species, are worldwide in distribution, but abundant in the warmer regions. True, or diving, water beetles make up the family Dytiscidae. Shredders feeding mostly on plant material and algae, but some species are carnivorous. Additional air supply is kept under the flattened coxal plates, which partially cover the first segment of hind legs. Other four legs are trucked into grooves along the sides to preserve streamlined body shape. These beetles are found swimming in marshy freshwater ponds throughout the world, especially in warm regions. The hardened elytra, or wing covers, which are usually grooved in the female and smooth in the male, form a cavity above the body proper. Larvae are active and voracious predators attacking invertebrates and all other animals that are smaller than they are (including fish and amphibians). Gills can be withdrawn into the body cavity to protect them from abrasion in a fast current. Their life cycle includes four stages – egg, larva, pupa and adult. The beetles are strong fliers and sometimes are attracted to lights at night. Water scavenger beetles can be found in almost any aquatic habitat, including temporary pools, wetlands, marshes, ponds and slow sections of flowing waters. They are common in temporary pools, wetlands, marshes, ponds and slow sections of flowing waters. Life cycle: In contrast to terrestrial beetles, having spiracles placed mostly on the sides of the body. Adults and larvae rely on atmospheric oxygen, therefore can be found even in habitats with low level of dissolved oxygen. Ochthebius poweri. Their life cycle includes four stages – egg, larva, pupa and adult. These beetles find shelter at the bottom of muddy waters and make it their home. The Giant Water Bug's body is mostly flat and oval shaped with dark brown, 'dead leaf' coloring. Only the empty, crumpled skins of their prey are left behind. Water Beetle, common name for any of numerous aquatic beetles including the true, or diving, water beetles, the whirligig beetles, and the water scavenger beetles. Introduction: Water beetles are attracted to sources of light. The giant black water beetle (Hydrophilus triangularis) (Figure 1) is the largest aquatic-dwelling beetle in not only Florida, but in the entire United States (Epler 2010). water beetles are predators but others feed on algae and detritus. Enzymes quickly paralyze and kill the victim. Their life cycle includes four stages – egg, larva, pupa and adult. 1. In order to escape their predators, they are known to play dead. larvae, Diving beetle (Platambus maculatus) larvae, Diving beetle (Cybister lateralimarginalis), Diving beetle (Cybister lateralimarginalis) larvae. Predaceous Diving Beetle Larva. Introduction: If needed, they can clumsily swim by alternate strokes with their legs. Whirligig beetles make up the family Gyrinidae. These very large beetles are in the genus Dynastes, which is found throughout the Americas.Tropical species are among the largest insects in the world. Legs are long (compared to the body). Threatened species are animals and plants that are likely to become endangered in the foreseeable future. They have a flat and oval shape and are of dead leaf like color. Of becoming extinct mortality is high in this species, such as dragonfly larvae, beetle... 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