Next the larvae make their way into the connective tissue in the pro-thorax, and ultimately bore a channel into the base of the piercing apparatus and come to rest between the hypopharynx and the labium. [Please select]
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Endolabium: the inner or mouth surface of the labium: the hypopharynx when that is well developed. [Please select]
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Salivary receptacle: a small cavity above the opening of the salivary duct, between labium and hypopharynx. [Please select]
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Præmentum smaller than the hypopharynx, in outline roughly oval or semicircular with the two labial palpi surrounded by hairs at the base. [Please select]
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Hypopharynx: a sensitive and sensory structure on the upper surface of labium that serves as an organ of taste, or true tongue. [Please select]
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