GARDEN -FLEA-HOPPER IN ALFALFA. 
13 
Prouotum. — Length 0.40 mm., width at base 0.85 mm., similar to the male. 
Hemelytra. — Width 0.97 mm., similar to the male. 
Legs, — Differing from the male in having the front and middle femora black with 
only the tips pale. 
Venter. — Black, moderately shining; ovipositor extending from a point near the 
tip of the hind coxae. 
FEMALE (BRACHYPTEROUS). 
Length to tip of venter 1.6 mm., width 1.05 mm. Distinguished at once by its 
small ovate form and abbreviated hemelytra. Not differing from the macropterous 
female except in the form of the hemelytra and the absence of hind wings. 
Fig. %.— Halticus citri: Male. Greatly enlarged. 
Fig. 9. 
■Halticus citri: Macropterous female. 
Greatly enlarged. 
Antenna?.. — Segment I, length 0.22 mm., pale fuscous, paler at the base; II, 0.97 
mm., pale, blackish at the base and apex; III, 0.85 mm., pale, fuscous toward the 
apex; IV, 0.57 mm., fuscous. 
Hemelytra. — Length 0.94 mm., not reaching to the tip of the venter; width 1.03 
mm. ; rounded and convex, the membrane and the hind wings absent. 
The comparative lengths of adults of both sexes are shown in the 
following table: 
Table IV. — Comparative length of male and of brachypterous and macropterous female 
adults of the garden flea-hopper (Halticus citri). 
Specimen No. 
Length ol 
Specimen No. 
Length of— 
Male. 
Brachyp- 
terous 
female. 
Macrop- 
terous 
female. 
Male. 
Brachyp- 
terous 
female. 
Macrop- 
terous 
female. 
1 
Mm. 
2.2 
2.0 
2.2 
2.2 
2.0 
Mm. 
1.7 
1.5 
1.6 
1.5 
1.7 
Mm. 
2.15 
2.17 
2.19 
2.15 
2.19 
6. 
Mm. 
2.0 
Mm. 
1.6 
Mm. 
2.17 
2 
Average length. 
Average length of 8 
adults.. . 
3 
2.1 
1.6 
2.17 
4 
1.95+ 
