Family: Dytiscidae
Cybister lateralimarginalis is a species of beetle native to the Palearctic (including Europe), the Near East and North Africa.
There are approximately 80 species in the genus.
Cybister lateralimarginalis is a species of beetle native to the Palearctic (including Europe), the Near East and North Africa.
There are approximately 80 species in the genus.
Cybister ('kybistētēr' = diver, tumbler), is a genus of beetle in family Dytiscidae. They are found in much of the world, including all continents except Antarctica. As of 2021 there are 96 species and 9 additional subspecies among four subgenera in the genus.
Description
Adult Cybister have broad hind legs with unequal tarsal claws (the inner claw being smaller and sometimes absent) and a fringe on the outer margin of the tarsus. They range in length from 13 mm (C. parvus from Brazil) to 43 mm (C. bimaculatus from the Afrotropics). Adult males of the North American species have several ridges on the coxae of the hind legs, forming a stridulatory device.
Larvae have a frontal tooth on the head and lack cerci. North American species can grow up to 80 mm long.
Ecology
Cybister live in lentic (still fresh water) habitats that have vegetation.
Like other diving beetles, Cybister are predatory. Larvae of C. japonicus prey on insects (mainly Odonata nymphs and the backswimmer Notonecta triguttata) in their first two instars, while third-instar larvae prey on vertebrates (tadpoles and fish). Larvae of C. rugosus feed on both invertebrates and vertebrates in all instars. From Wikipedia, the free encyclopedia
Photos Kotsiatis, 20/8/2014 by George Konstantinou
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