GARDEN FLEA-HOPPER IN ALFALFA. 15 
Body: Widest at the head and thorax, caudal end bluntly pointed when viewed 
from the dorsum. 
Legs: Femur covered with long sparse hairs; tibia covered with numerous short, 
stiff, appressed hairs; tarsi covered with numerous short, stiff hairs, end of tarsi having 
two small hooks. 
SECOND INSTAR. 
Fig. 12. 
Length 0.81 mm., width 0.27 mm. at widest part of the body. Thorax and abdomen 
pale green, appendages clay color. Eyes lateral and prominent, oval shaped, with 
hexagonal facet structure, color carmine. Beak 0.32 mm.; of three joints, dark at 
apex, sucking tube brownish. Antennae tubular, of four joints, the first slightly 
swollen; amber colored, pubescent, hairs somewhat appressed; first joint 0.08 mm. in 
length, second 0.22 mm., third 0.25 mm., fourth 0.24 mm., total 0.79 mm. 
Body : Each segment with sparse, short, stiff hairs. Body widest at fifth abdominal 
segment, tapering bluntly at posterior extremity. 
Legs: Amber colored, femur covered with long, sparse hairs; tibia bearing short, 
stiff, appressed hairs; tarsi bearing numerous short, stiff hairs, end of tarsi having two 
small hooks. 
Fig. 12.— Halticus citri: Second nymphal Fig. 13.— Ilalticus citri: Third nymphal instar. 
instar. Greatly enlarged. Greatly enlarged. 
THIRD INSTAR. 
Fig. 13. 
Length 1.03 mm., greatest body width 0.32 mm., width of head at widest point 
29 mm. 
Head brownish, thorax and abdomen varying in color from pale to dark green, 
appendages amber colored. Eyes lateral and prominent, oval shaped, with hexagonal 
facet structure, color carmine. Beak 0.38 mm. long, three-jointed, amber colored, 
terminal joints dark at apex. Sucking tube brownish. Antennae tubular, four- 
jointed, amber colored, pubescent, hairs somewhat appressed; first joint 0.29 mm. in 
length, second 0.3.1 mm., third 0.22 mm., fourth 0.13 mm., totallength 0.95mm. 
Body : Number of joints as in preceding instar. On dorsum of each joint one short, 
stiff hair and on lateral side of dorsum one stiff hair. Color pale green. Body widest 
at fifth abdominal segment, tapering bluntly at posterior extremity. 
Legs: Femur covered with long, sparse hairs; tibia bearing short, stiff, appressed 
hairs, tarsus bearing numerous short, stiff hairs, end of tarsi having two small hooks. 
