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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 cornutus larva, museum specimen. The larvae are light brown with a covering of tiny dark brown microspines. The thorax has three pairs of legs and each segment is covered by a tough, dark-coloured dorsal plate. [6] The first eight abdominal segments have lateral tactile filaments and the first seven have tracheal gills in tufts. [7]
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.
Lepidopterans undergo complete metamorphosis, going through a four-stage life cycle: egg, larva or caterpillar, pupa or chrysalis, and imago (plural: imagines) / adult. The larvae – caterpillars – have a toughened ( sclerotised ) head capsule, chewing mouthparts , and a soft body, that may have hair-like or other projections, three pairs of ...
Marine larval ecology is the study of the factors influencing dispersing larvae, which many marine invertebrates and fishes have. Marine animals with a larva typically release many larvae into the water column, where the larvae develop before metamorphosing into adults.
Larvae are typical hellgrammites, and fill a similar ecological niche to larvae of Corydalus and other genera. There appears to be an altitudinal gradient between Platyneuromus and Corydalus in Mexico. At low elevations (about 500 m), under a semiarid climate, only C. luteus Hagen is found.