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Eastern Dobsonfly (Corydalus cornutus) female. The adult dobsonfly is a large insect up to 140 millimetres long with a wingspan of up to 125 millimetres. [8] The female has short powerful mandibles of a similar size to those of the larva while the mandibles of the male are sickle-shaped and up to 40 millimetres long, half as long as the body. [1]
The metamorphosis from larva to adult in dobsonflies is one of the simplest of the holometabolous orders, [3] yet the life cycle begins with an intriguing ritualized courtship display (most of the following comes from Simonsen et al. 2008 [8] and all pertains to Corydalus; other courtship rituals remain unknown). Males compete with each other ...
Corydalus is a transliteration from the Greek κορδαλος (korúdalos) [3] meaning a crested lark or the flower, larkspur, apparently related to Greek corys (κορυς) a helmet crest. [4] The name probably refers to the long mandibles of the male which might be considered to resemble the crest of a lark, or perhaps, the decorative crests ...
The eastern dobsonfly, Corydalus cornutus, is the most well-known North American species among the dobsonflies. These genera have distinctive elongated mandibles in males and form the subfamily Corydalinae. The genera in which the males have normal mandibles, called fishflies, form the subfamily Chauliodinae.
Corydalus cornutus - MHNT. Megaloptera is an order of insects.It contains the alderflies, dobsonflies and fishflies, and there are about 300 known species.. The order's name comes from Ancient Greek, from mega-(μέγα-) "large" + pteryx (πτέρυξ) "wing", in reference to the large, clumsy wings of these insects.
Nigronia serricomis larvae, being predators, have to compete with other predators in their streams. This has been observed in Michigan between N. serricornis and Corydalus cornutus. [9] This interspecific competition affects the N. serricornis very little due to their generalized diet but when the two do interact Corydalus cornutus dominates. [8]
Small colonies of the freshwater entoproct Urnatella gracilis have been found living on the aquatic larvae of the dobsonfly Corydalus cornutus. The ectoprocts gain a means of dispersal, protection from predators and possibly a source of water that is rich in oxygen and nutrients, as colonies often live next to the gills of the larval flies. [32]
C. cornutus may refer to: Cerastes cornutus, a viper species; Cotylurus cornutus, a helminth species; Chaetoceros cornutus, a diatom species in the genus Chaetoceros; Citharichthys cornutus, a flounder species in the genus Citharichthys; Corydalus cornutus, a dobsonfly species in the genus Corydalus