GAEDEN FLEA-HOPPER IN ALFALFA. 



13 



Pronotum. — Length 0.40 mm., width at lia?e 0.85 mm., similar to the male. 



Hemehjtra. — Width 0.97 mm., similar to tlie male. 



Legs. — Differing from the male in leaving 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 coxa*. 



FEMALE (BRACHYPTEROITS). 



Length to tip of venter l.G 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 thf absence of hind wings. 



Fig. >i. — HuUicus citri: Malo. lireatly enlarged. 



Fig. 9. — Ilalticus citri: Macropteroii.s female. 

 Greatly enlarged. 



Anlenn.r. — Segment 1, length 0.22 mm., pale fuscous, paler at the base; 11, 0.97 

 mm., pale, blackish at the base and apex; III, 0.85 mm., pale, fuscous toward the 

 apex; IV, 0.57 mm., fuscous. 



. Ilemelytrn. — Length 0.94 mm., not reaching to the tip of the venter; width 1.03 

 mm.; rounded and coiiAex, the membrane and the hind wings absent. 



The comparative lengths of adults of both sexes are shown in the 

 following table: 



Table IV. — Compt.rativc length of male and of brachypicrotts and viacroptcrovs female 

 adults of the garden Jka-hopper {Ilalticus citri). 





Length of— 



Specimen No. 



Length of— 



Specimen No. 



Male. 



Brachyp- 



teroiis 

 female. 



Macroi> 

 teroiis 

 female. 



Male. 



Brachyp- 

 teroiis 

 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 



Mv\. 

 2.15 

 2.17 

 2. 10 

 2.1.") 

 2.10 



6. 



Mm. 

 2.0 



Mm. 

 1.6 



Mm. 

 2 17 



'i 



Avcrape lenfrth . 

 Average length of S 

 adults.. 





3 



2.1 



1.6 



2 17 



4.. . 







1.0.1+ 













