Browsing Digitized Theses and Dissertations (1922–2004) by Subject "Walnut caterpillars"
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(Texas A&M University. Libraries, 1980)The ventral prothoracic exocrine gland (VPEG) of larvae of Datana integerrima is an unpaired sac arising as an ingrowth of the epidermis. The VPEG lies in the ventral body cavity, beneath the prothoracic nerve ganglion; ...