F'o.MOW Cnr.I.KCK JofRNAL OF K.N'TOMOIXKJV 



rn.') 



usually iiiiif <>r flcvcii, 1\' lias none; V has one near the api-x, anil tlirce or 

 four on VI at the base of tln' spur. Koslnim — Yi-llow with dark tip, floe- 

 (iilont. rt-ai-hiiiK to the third coxii-. I'rolhonis — Little widi-r than tin- head. 

 with small lateral tulienles, dark olive green with lighter green transverse 

 hands at hase and apex, ventral surface dusky green, tloeeuient. Misi>- and 

 Mctathoras — Dark olive green with hlaek inusele lohes, ventral surfaci- dusky 

 green, Hoceulent. Abtlnmrn — Well rounded, lateral edges lohed. with snudi 

 tubercles, dull olive green with dark longitudinal dorsid and lateral hands 

 with few dark cross hands. These markings are very irregular ami often 



Figure 252. Rhopalosiphum nymphaeae (Linn.) 

 A, winged viviparous female; B, apterous viviparous female: I and 2, antenna 

 of winged viviparous female; i, <lorsal aspect of style of winged female; 4. 

 cornicle of winged female: 5. lateral aspect of the style of winged female; 6. 

 cornicle of apterous female; 7. style of apterous female; 8 and 9, antenna of 

 apterous female. 



obscure; ventral surface dull green, siniwth. Anal plate well rounded, rough, 

 hairy and nearly black. C'or/iiV/fs— (Figure 252. 4). I>oiig, elavical, extreme 

 ba.se wide, ba.sal half very narrow and widening throughout the apical half. 

 slightly constricted just before the flaring mouth, the swollen portion much 

 darker than the remainder which is rather dark olive green. They tlo nr)t 

 reach to the tip of the style, length 0.2.") mm., greatest width i>.ii4 mm. Lrgs 

 — Very small, dark, with very fine and short hairs, ("oxa- dark: femora didl 

 green with apical two-thirds nearly black; tibia- didl green with ba.se and tip 

 very dark; tarsi ilark. All joints pruino.se or rtocctilent on the under sides. 

 ^r»«(;A- — Normal, hyaline. I'rimnnj — Length 2.2 nun., width 0.8 mm., rather 

 slender; costal wide, brown; stibcostal much wider than the costal, brown: 



