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The elytra of this cockchafer beetle are readily distinguished from the transparent hindwings.. An elytron (/ ˈ ɛ l ɪ t r ɒ n /; from Ancient Greek ἔλυτρον (élutron) 'sheath, cover'; pl.: elytra, / ˈ ɛ l ɪ t r ə /) [1] [2] is a modified, hardened forewing of beetles (Coleoptera), though a few of the true bugs such as the family Schizopteridae are extremely similar; in true ...
Chrysolina cerealis can reach a length of 5.5–10 millimetres (0.22–0.39 in). [5] Females are typically larger than males. [5] Coloration of the pronotum and the elytra is quite variable, usually it is metallic green with three blue and red longitudinal stripes, with golden reflections (hence the common name).
Their main purpose is to protect the more fragile hind wings. The elytra also form the hard case of the beetle, covering its entire dorsal surface and giving it its coppery tinge. The elytra, similar to the head and thorax, contains punctures, but they are smaller and more irregular compared to other parts of the body.
Many have the two elytra fused together, forming a solid shield over the abdomen. In a few families, both the ability to fly and the elytra have been lost, as in the glow-worms (Phengodidae), where the females resemble larvae throughout their lives. [76] The presence of elytra and wings does not always indicate that the beetle will fly.
Adults of N. littoralis grow to be 15 to 25 mm (0.59 to 0.98 in) long and have a shiny black body. The beetles can be identified by a characteristic bump about three quarters down the length of their elytra, a hardened forewing that act as armor to protect the beetle from environmental factors and predators. [2]
The elytra are hardened forewings used to protect the fragile hind wings underneath. The elytra are attached to the suture that runs down the middle of the beetle's back and range from reddish brown to black. [5] They have a distinctive tooth at the shoulder and the vertical ridges are very apparent.
Microscope image of an individual elytron from Augenerilepidonotus dictyolepis.Note the fringing papillae on the border. In annelids, elytra (/-t r ə /; from Greek ἔλυτρον "sheath, cover"; sg.: elytron / ˈ ɛ l ə t r ɒ n /) [1] are shield-like scales that are attached dorsally, one pair on each of a number of alternating segments and entirely or partly cover the dorsum. [2]
A new generation of beetles then emerges. Generations can be continual in warmer climates, recurring at least twice a year. Cultivation practices and the use of resistant crop varieties help prevent severe flea beetle infestations. Seedbeds are covered with strips of a thin transparent gauze to protect seedlings from adult feeding before ...