X and flexible), each with a "mucro" at its tip (fig. [Please select]
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Mesosternal cavity: in Elateridae, the opening into which the prosternal spine or mucro is fitted. [Please select]
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Prosternal spine: the curved mucro in Elateridae which extends backward into a meso-sternal cavity: the cone or tubercle between fore-legs in some Orthoptera. [Please select]
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