The members of this family are known as predaceous diving beetles
and could be found in all type of fresh water habitats.
Predation of adult large diving beetles
Dytiscus marginalis (Linnaeus, 1758), Dytiscus circumcinctus (Ahrens, 1811) and Cybister lateralimarginalis (De Geer, 1774) (Coleoptera: Dytiscidae) on fish fry.
21.31% was recorded in January and Great Diving Beetle
(Dytiscus sp.) i.e.
These include the Great Diving Beetle
which eats a lot of tadpoles.
(10.) James HG: Immature stages of five diving beetles
(Coleoptera: Dytiscidae), notes on their habits and life history, and a key to aquatic beetles of vernal woodland pools in Southern Ontario.
A new species of predacious diving beetle
, Heterosternuta phoebeae (Coleoptera: Dytiscidae), from the Ozark Mountains of Arkansas.
Some of these have wonderful names including minutest diving beetle
, iron blue mayfly, distinguished jumper spider, wormwood moonshiner, fancy-legged fly and English assassin fly.
For instance, children learn that the scorpion fly can walk across a spiderweb without getting caught, and that the great diving beetle
is big and strong enough to catch fish.
Big Waters Nature Reserve, on the outskirts of Newcastle, was shown to be rich in invertebrates, with a rare species of diving beetle
and hornwort found.
The lesser silver diving beetle
, known to survive only in Cheshire and Somerset, has been discovered in ponds alongside the Basford-Hough-Shavington Bypass, near Crewe.
The Great Diving Beetle
, found in garden ponds, can draw blood if it bites, and earwigs can use the pincers at the end of their body to nip.