EXPLANATION OF PLATE XXI 
| Shivaphis celti, u pp 220000 
FIG. 1.—Antenna of alate male. : 
nr 2. Ventralicaudal endsoi alate male. 
»  3-—Ventral caudal end of alate female. 
,  4-—Hind tibia of oviparous female. 
»  5-—Specimen enlarged- 
eee ve 6 Ssatenna on alate female. 
»  7.-—Alate female. 
| ,  8.—Apterous viviparous female. 
: | »  9.—Antenna of apterous female. 
„ 10.—Cornicle and wax gland. cor..= cornicle; w. g.—wax glands. 
Tuberolachnus viminalis (Fonsc.) Mordw., p. 257. 
eq Pia i | 
„ 12. Anterior wing. ae ae, 
„ 13.—Antenna of alate female (after Essig). 
