_ Antennæ arcuated; the club terminal, thick, linear, obtuse; more slender and attenuated in the female. [Please select]
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The singular "pyriform appendage" of the heart lies in the left process of the ligament, its anterior edge nearly following the arcuated contour of that process. [Please select]
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_ Antennæ linear, thickened in the middle, externally ciliated in the male, simple and filiform in the female, gradually ending in an arcuated, obtuse hook. [Please select]
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