They are, in turn, eaten by fish and targeted by many parasites. At the water’s surface, the beetles project their antennae out of the water … Predaceous Diving Beetles (Water Tigers) Species in the beetle family Dytiscidae. This large beetle lives in water, where it scavenges vegetation and insect parts. They live in ponds, shallow lake areas, and still areas of rivers and streams. They are generally predators, however some eat algae. Select an environment to see its water scavenger beetles species checklist. Notes - Water scavenger beetle larvae can often be difficult to identify below the Family level. Water scavenger beetles (family Hydrophilidae) are primarily tropical aquatic beetles. Water Scavenger Beetle, Berosus sp. The water scavenger beetle has triangular yellow markings on the sides of the abdomen and usually swims near the bottom of shallow pools. The name says it all. Scientific Name: Hydrophilus triangularis Say Order: Coleoptera (Beetles) Family: Hydrophilidae (Water scavenger beetles) Description and Distinctive Features: The adult giant water scavenger beetle is a glossy black, smooth bodied beetle that is 27-40 mm long. Today I’m going to focus on two aquatic beetle groups that a lot of people have a hard time telling apart from one another: the predaceous diving beetles (family Dytiscidae, the dytiscids) and the water scavenger beetles (family Hydrophilidae, the hydrophilids). Water Scavenger Beetles and their offspring prey on their smaller aquatic neighbors, the adults also scavenge, resulting in a food pyramid that includes decaying vegetation and dead animal tissue. Like the true water beetles, water scavenger beetles must find a way of supplying themselves with oxygen while they forage underwater. Year: 2013. cc-by-nc Water Scavenger Beetle Habitats. Larvae of water scavenger beetles (Coleoptera: Hydrophiloidea) are adapted to a wide variety of aquatic habitats, but little is known about functional and evolutionary aspects of these adaptations. University of Oulu. The size of the Water Scavenger Beetle … The oval whirligig beetle has brownish yellow legs and often swim in circles. Beetles in the family Hydrophilidae. While other water beetles swim by alternating their leg movements, the diving beetle moves its legs together like oars. Giant Water Scavenger Beetle - Hydrophilus ovatus: Giant Water Scavenger Beetle - Hydrophilus ovatus: Giant Water Scavenger Beetle - Hydrophilus ovatus: Laccobius agilis: Laccobius agilis: Laccobius minutoides: Laccobius minutoides: Laccobius minutoides: Laccobius minutoides: Paracymus confluens: There are hundreds of species in North America. Water Scavenger Beetle 5 Hydrophilidae (adult) Water Scavenger Beetle 5 Psephenidae (larvae) Water Penny 4 Chaoboridae Phantom Midge 8 Chironomidae Non-biting Midge 6 pale forms 8 red forms Culicidae Mosquito 8 Athericidae Aquatic Snipe Fly 2 Dixidae Dixid Midge 1 Blephariceridae Net-winged Midge 0 Ceratopogonidae Biting Midge 6 The environments in which many water scavenger beetles species are known to live. Stonefly Larvae. Marko Mutanen. The insect can store a supply of air within its silvery belly, much like a deep-sea diver stores air in a tank. The wing covers often reflect faint greenish or purplish hues. Elliptic Water Scavenger, Tropisternus ellipticus: California Pink Glowworm, Microphotus angustus: Douglas Fir Glowworm, Pterotus obscuripennis: Pyropyga nigricans : Lathridiidae (Minute Brown Scavenger Beetles) Meloidae (Blister Beetles) Species in the genera Abedus, Belostoma, and Lethocerus. Giant Water Bugs. Water Scavenger Beetles. 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