PLATE 7 



Fig. 117. Phorodon humuli Schr., cornicle. 



Fig. 118. Phorodon humuli Schr., cauda. 



Fig. 119. Ehopalosiphum persicae (Sulz.), cornicle. 



Fig. 120. Ehopalosiphum pcsicae (Sulz.), cauda. 



Fig. 121. Myzus cerasi (Fabr.), cornicle. 



Fig. 122. Myzus cerasi (Fabr.), cauda. 



Fig. 123. Nectarosiphon rubicola (Oest.), cauda. 



Fig. 124. Nectarosiphon morrisoni Swain, antennal tubercles. 



Fig. 125. Nectarosiphon morrisoni Swain, third antennal segment. 



Fig. 126. Nectarosiphon morrisoni Swain, cauda. 



Fig. 127. Nectarosiphon morrisoni Swain, cornicle. 



Fig. 128. Macrosiphum stanleyi Wilson, cornicle. 



Fig. 129. Macrosiphum solanifolii (Ashm.) (from Sonchus), cornicle. 



Fig. 130. Macrosiphum pisi (Kalt.), cornicle. 



Fig. 131. Macrosiphum californicum (Clarke), third antennal segment. 



Fig. 132. Macrosiphum californicum (Clarke), cornicle. 



Fig. 133. Macrosiphum cucurbitae (Thomas), third antennal segment. 



Fig. 134. Macrosiphum cucurbitae (Thomas), cornicle. 



Fig. 135. Macrosiphum granarium (Kirby), third antennal segment. 



Fig. 136. Macrosiphum ludovicianae (Oest.), third antennal segment. 



Fig. 137. Macrosiphum solanifolii (Ashm.), cornicle. 



Fig. 138. Macrosiphum solanifolii (Ashm.), third antennal segment. 



[192] 



