Characters of tibiae.

<p>(A-C) Spinules and rastral spines present on distal part of tibiae (alate viviparous females): (A) <i>Drepanosiphum platanoidis</i>; (B) <i>Drepanaphis acerifoliae</i>; (C) <i>Yamatocallis tokyoensis</i> Drepanosiphinae SEM. (D-F) Only spinules present on distal part of tibiae (apterous viviparous females): (D) <i>Drepanosiphoniella aceris</i> Drepanosiphinae; (E) <i>Periphyllus testudinaceus</i>; (F) <i>Caricosipha paniculatae</i> Chaitophorinae SEM. (G-N) Distal part of tibiae smooth (apterous viviparous females): (G) <i>Chaitophorus populeti</i>; (H) <i>Trichaitophorus koyaensis</i> SEM; (I) <i>Lambersaphis pruinosae</i>; (J) <i>Pseudopterocomma hughi</i> LM; (K) <i>Atheroides serrulatus</i>; (L) <i>Chaetosiphella stipae</i>; (M) <i>Laingia psammae</i>; (N) <i>Sipha</i> (<i>Rungsia</i>) <i>maydis</i> Chaitophorinae SEM.</p>