| Predaceous diving beetles |
Species of Dytiscus | | Scientific classification | | | | Genera | | at least 160, see text
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Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ...
Phyla Porifera (sponges) Ctenophora (comb jellies) Cnidaria Placozoa Subregnum Bilateria Acoelomorpha Orthonectida Rhombozoa Myxozoa Superphylum Deuterostomia Chordata (vertebrates, etc. ...
Subphyla and Classes Subphylum Trilobitomorpha Trilobita - Trilobites (extinct) Subphylum Chelicerata Arachnida - Spiders, Scorpions, etc. ...
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Suborders Adephaga Archostemata Myxophaga Polyphaga See subgroups of the order Coleoptera Beetles are one of the main groups of insects. ...
William Elford Leach (February 2, 1790 - August 26, 1836) was an English zoologist and marine biologist. ...
See genus (mathematics) for the use of the term in mathematics. ...
| The predaceous diving beetles (also spelled "predacious") are a family (Dytiscidae) of water beetles. They are about one inch long, dark brown in color with golden highlights and short, but sharp, pincers. The larvae are commonly known as water tigers. The family has not been comprehensively cataloged since 1920, but is estimated to include about 4,000 species in over 160 genera. A water beetle is a beetle adapted for living in water. ...
When still in larva form, the beetles vary in size from a half an inch to two inches. Their bodies are shaped like crescents, with the tail long and covered with thin hairs. Six legs protrude from along its belly, which also sports the same thin hairs. The head is flat and square, with a pair of long, large pincers. When hunting, they tend to cling to grasses or pieces of wood along the bottom, and hold perfectly still until prey passes by- at which point, they lunge, trapping their soon-to-be-food between their front legs and biting down with its pincers if the prey is large, and merely biting at the water if it is small. Usual prey includes tadpoles and glassworms, among dozens of other smaller water-dwelling creatures. A larva (Latin; plural larvae) is a juvenile form of animal with indirect development, undergoing metamorphosis (for example, insects or amphibians). ...
Ten-day-old tadpoles Embryos (and one tadpole) of the wrinkled frog (Rana rugosa) A tadpole (also known as a pollywog) is a larval frog, toad, salamander, or newt. ...
The Glassworm is a type of mosquito larvae called a Chaoborus. ...
As soon as the beetles come to the stage in life in which they mature to adulthood, the larva crawl from the water on their aforementioned sturdy legs, and bury themselves in the mud for around a week; upon the end of this period, they emerge from the mud as adults.
Genera
- Hydrotrupinae
- Copelatinae
- Agaporomorphus
- Aglymbus
- Copelatus
- Lacconnectus
- Agabetinae
- Laccophilinae
- Hydroporinae
- Laccornini
- Vatellini
- Derovatellus
- Macrovatellus
- Mesovatellus
- Vatellus
- Methlini
- Hydrovatini
- Hyphydrini
- Bidessini
- Hydroporini
- Colymbetinae
- Agabini
- Coptotomini
- Matini
- Colymbetini
- Dytiscinae
- Dytiscini
- Hydaticini
- Aciliini
- Eretini
- Cybistrini
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