elytra
['elɪtrə]
n.
翅鞘，翅基(elytron的复数形式);
翅鞘，翅基( elytron的名词复数 );
例句:
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The elytra are elongate with parallel sides, and heavily striated.
来自BBC
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In this order the the forewings are modified to form hard elytra or cases.
该目昆虫的前翅发展成坚硬的鞘翅或壳.
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Most of the body is black with distinctive red elytra covering the flying wings.
来自BBC