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Acilius is a genus of predacious diving beetles of the family Dytiscidae, represented by two species in Britain.
 Research Acilius
Agabus is a genus of predacious diving beetles of the family Dytiscidae, with twenty species occurring in Britain ranging from eight to eleven millimetres in length. They are mostly dark brown and the males have tiny suction pads or patches of adhesive hairs on the under side of the widened first segments of the fore and middle tarsi. They live chiefly in cold, clear water.
Research Agabus
Bidessus is a genus of predacious diving beetles of the family Dytiscidae, with two species found in Britain.
Research Bidessus
Coelambus is a genus of predacious diving beetles of the family Dytiscidae, with four species occurring in Britain. Almost all the species have longitudinal stripes on a yellow to yellowish-red background.
Research Coelambus
Colymbetes is a genus of predacious diving beetles of the family Dytiscidae, represented by a single species, Colymbetes fuscus, in Britain.
Research Colymbetes
Copelatus is a genus of predacious diving beetles of the family Dytiscidae, ranging from six to eight millimetres in length and living in stagnant water with plenty of vegetation.
Research Copelatus
Dytiscidae is the predacious diving beetle family of insects of the order Coleoptera, with over 100 species found in Britain. They have modified hind- legs adapted for use as paddles and covered with long hairs and a streamlined body. They are excellent at flying and can move to new water as required. They carry air beneath the elytra, and use this to breathe while diving under the surface. Both the adults and larvae are strictly predacious.
Research Dytiscidae
Dytiscus is a genus of large (36 to 44 mm in length) predacious diving beetles of the family Dytiscidae represented by six species in Britain. They are dark brown, often with an olive-green reflection, and have a yellow marginal stripe. On the first pair of tarsi the male have one large, one smaller and a number of smaller still suction discs. Both larva and adult are aquatic, the latter diving and swimming with great speed. They are actively carnivorous and are dangerous even to small fish owing to their strong jaws. Swimming is effected by powerful posterior legs which are compressed and hairy forming oars. Air is carried in a space between the wing-covers and the body, and refilled by the beetle rising to the surface. The beetles possess wings which are used to journey from one pool to another.
Research Dytiscus
Graptodytes is a genus of predacious diving beetles of the family Dytiscidae with four species living in Britain. They live chiefly in the sludge of stagnant pounds and slow-flowing streams.
Research Graptodytes
Guignotus is a genus of predacious diving beetles of the family Dytiscidae.
Research Guignotus
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The Probert Encyclopaedia was designed, edited and programed by
Matt and Leela Probert
©1993 - 2009 The Probert Encyclopaedia
Southampton, United Kingdom
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Abbreviations
