. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 16 BULLETIN 964, U. S. DEPARTMENT OF AGRICULTURE. FOURTH INSTAR. Fig. 14. Length mm., widtli of body at widest point mm., width of head at widest point mm. Thorax and abdomen light to dark green, head brownish. Eyes lat- eraland prominent, ovalshaped, with hexagonal facet structure, color carmine. Beak mm. long, of three joints, terminal joints dark at apex, sucking tube dark brown. Antennas tubular, of four joints, the first slightly swollen; amber colored, pubescent, hairs somewhat appressed; firs
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 16 BULLETIN 964, U. S. DEPARTMENT OF AGRICULTURE. FOURTH INSTAR. Fig. 14. Length mm., widtli of body at widest point mm., width of head at widest point mm. Thorax and abdomen light to dark green, head brownish. Eyes lat- eraland prominent, ovalshaped, with hexagonal facet structure, color carmine. Beak mm. long, of three joints, terminal joints dark at apex, sucking tube dark brown. Antennas tubular, of four joints, the first slightly swollen; amber colored, pubescent, hairs somewhat appressed; first joint mm. in length, second mm., third mm., fourth mm., total mm. Body: Number of joints as in preceding instar. On dorsum of each joint are short, sparse, stiff hairs and on the side one short, stiff hair. Body light to dark green, wider than head at widest point, and tapering bluntly at posterior end. Legs: Straw colored, femur covered with long, sparse hairs; tibia covered with numerous short, stiff, appressed hairs; tarsus bearing numerous short, stiff Fig. 14.—Halticus citri: Fourth nymphal instar. Greatly enlarged. Fig. 15.—Halticus citri: Fifth nymphal instar. Greatly enlarged. FIFTH INSTAR. Fig. 15. Length 2 mm., width mm. at widest point two-thirds of the way back from anterior end, height or depth of head mm., widest point of head over the eyes mm. Color of head brownish, of thorax and abdomen pale to dark green. Eyes lateral and prominent, oA'al shaped, with hexagonal facet structure, color carmine. Beak mm. long, of three joints, terminal joints dark at apex, sucldng tube dark brown. Antennas tubular, of four joints, amber colored, pubescent, more densely at apex, hairs somewhat appressed; first joint mm. in length, slightly swollen; second mm., tubular, slightly enlarged, and brown; third mm., tubular, slender, pale; fourth mm., tubular, slender, tapering acutely; total length mm. B
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