Angle: of tegmina, "is the longitudinal ridge formed along the interno-median by the sudden flexure from the horizontal to the vertical portion when closed." [Please select]
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Costal field: Orthoptera; that region of the tegmina adjacent to the anterior margin or costa: = anterior field. [Please select]
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Lower margin: of tegmina (Thomas), is the costal or anterior margin of other authors. [Please select]
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Scraper: the hardened portion of the inner margin of the tegmina in crickets used in producing the song. [Please select]
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Elytra: the anterior leathery or chitinous wings of beetles, serving as coverings to the secondaries, commonly meeting in a straight line down the middle of dorsum in repose: also applied to the tegmina in Orthoptera. [Please select]
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