DIFFERENCES IN THE QUALITY AND QUANTITY OF HONEYDEW FROM FIRST INSTARSOLDIER AND ORDINARY MORPH NYMPHS OF THE BAMBOO APHID, PSEUDOREGMA KOSHUNENSIS (TAKAHASHI) (HOMOPTERA, APHIDIDAE)

Although the body size of Ist-instar soldier nymphs was larger than th at of ordinary morphs of the bamboo aphid, Pseudoregma koshunensis (Ta kahashi), the diameters of the honeydew droplets excreted by these two morphs did not differ significantly. Soldiers excreted honeydew dropl ets significantly less frequently than ordinary Ist-instar nymphs. Tot al sugar and sugar per droplet excreted by soldiers were significantly less than those excreted by ordinary Ist-instar nymphs. However, the amino acid content of each honeydew droplet was slightly greater for s oldiers than for ordinary Ist-instar nymphs. In the soldier's honeydew , asparagine was the most abundant amino acid, and constituted as much as 62 mol%; of the total amino acid content, while in the honeydew of ordinary Ist-instar nymphs, both asparagine (32 mol%) and serine (20 mol%) were abundant. These results suggest a difference in nutritional requirements between the two morphs.