GAEDEN FLEA-HOPPER IN ALFALFA. 15 



Body: Widest at the head and thorax, caudal end bluntly pointed when A-iewed 

 from the dorsum. 



Legs: Femur coA'ered with long sparse hairs; tiVjia covered with numerous short, 

 Btiff , appressed hairs; tarsi covered with numerous short, stiff hairs, end of tarsi ha\ing 

 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, Avith 

 hexagonal facet structure, color carmine. Beak 0.32 mm.; of three joints, dark at 

 apex, sucking tube brownish. Antenna; 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 haAdng two 

 small hooks. 



Fig. 12.— Halticus cilri: Second nymphal Fig. 13.— //aaitusciiri; Third nymphal instar. 



instar. Greatly enlarged. Greatly enlarged. 



THIRD INSTAR. 

 Fig. 13. 



Length 1.03 mm., greatest body widtli 0.32 mm., width of head at widest point 

 29 mm. 



Head brownish, thorax and abdomen A'arjdng 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. Antenna^ tubular, four- 

 jointed, amber colored, pubescent, hairs somewhat appressed; first joint 0.29 mm. in 

 length, second 0.31 mm., third 0.22 mm., fourth 0.13 mm., total length 0.95 mm. 



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, s]iarse hairs: tibia bearing short, stiff, appressed 

 hairs, tarsus bearing numerous short, si iff hairs, end of tarsi huAing two small hooks. 



