The predaceous diving beetles are called Dytiscidae. Predacious Diving Beetles (a type of water beetle) are encrusted in hard dirt are ready to be excavated and discovered by young paleontologists. As their name implies, these beetles are predatory. B oth adult diving beetles and the larvae (the "water tigers") can bite people, but their bites do not usually hurt people or make them sick. It’s been a while since I’ve done an identification post, so it’s time for a new one! Predaceous diving beetles (Dytiscidae) are a moderately speciose family within the most speciose order of insects (Coleoptera). Barb immediately identified them as predaceous diving beetles (PDB). 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). Predaceous Diving Beetles Seeking Prey. Dytiscidae – based on the Greek dytikos "able to dive" are the predaceous diving beetles, a family of water beetles. However, this group has historically received little scientific attention to its systematics or its ecology within the aquatic invertebrate community. The predacious diving beetle is a seldom seen but very common aquatic insect. Common name(s): Predacious Diving Beetle. However, if there are too many diving beetles in a pond or lake, they reduce the number of fist that live there because they eat the baby fist (baby fish are called "fry"). However; you can see variations of length among the species of diving beetles. Predaceous diving beetles are easily confused with water scavenger beetles (Coleoptera: Hydrophilidae). Good decision... their "bite" injects digestive juices, like many other beetles and bugs such as the assassin bug, digesting their prey within its body before sucking the nutrition out of them. Predaceous Diving Beetles are also called water tigers. They don’t hesitate to attack prey larger than themselves, delivering a sharp bite with their jaws to small fish, tadpoles and frogs. Diving Beetle resin replica measures 2" long x 1.25" wide. On average, it has the length of 1 inch or 25 mm. This species has feathery legs that help it navigate through water. There is a family of water beetles, Dytiscidae, known as Predaceous Diving Beetles. The meaning is able to dive. With the name predaceous, I decided they weren't to be handled. Life History: • Primarily found in shallow, weedy, still water • … It is a voracious predator, hunting smaller invertebrates, tadpoles and even small fish. It is oval shaped and small. 25 come in each pack. One of the members of a family of water beetles is explained on Facts about Diving Beetles. The larvae are large, fearsome-looking beasts, with big, biting jaws: they look a … The latter surface for air head first and have a ridge or keel on the underside that runs down the thorax and extends into a point. The name was derived from a Greek word. • Body hardened and convex on top and bottom (Water scavenger beetles are concave on bottom) • Often rest hanging into water with tip of abdomen at surface • 2 long antennae • Short finger-like mouth parts, not visible from above. In fact, there are over 500 in North America and over 5,000 worldwide. Life Cycle: Adults and larvae are found in water. We've nicknamed the bug you see above, the predacious diving beetle, "zippity." They eat a variety of aquatic prey like other insect larvae and naiads. The Great diving beetle is a very large diving beetle that can be found in ponds and slow-moving water. Time for a new one it ’ s been a while since I ’ ve done an identification,. 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