12 



BULLETIlSr 964, U. S. DEPARTMENT OF AGRICULTURE. 



The male (fig. 8) lias the normal form of the Hemiptera, while 

 the brachypterous female may easily be taken for another species. 

 The macropterous female (fig. 9) resembles the male, having long 

 wings but is somewhat larger than the male. 



H. H. Knight, of the department of entomology, Cornell Uni- 

 versity, Ithaca, N. Y., has kindly drafted the following redescription 

 of the adult, from specimens furnished by the writer from Columbia, 

 S. C. 



Slightly smaller and less shining than aptenis L. ; in addition to the vestiture of 

 very fine pale pubescence, having on the dorsum deciduous tomentose patches which 

 give silvery to greenish reflections as in intermedins Uhler. 



MALE (MACROPTEROUS). 



Length 2.1 mm. (1.9 to 2.1 mm.), width 0.74 

 mm. ; slightly smaller and more slender than 

 the female. 



Head. — Length 0.22 mm., width across eyes 

 0.56 mm., vertex 0.31 mm. Nearly vertical, 

 front prominent, more or less sulcate at the 

 base of the tylus; black, shining; carina form- 

 ed by a sharp basal margin of the head. Rost- 

 rum reaching to the posterior margin of the 

 middle coxae; first two segments black, the 

 third and all but the apex of the fourth 

 pale. 



Antennas. — Long and slender, reaching be- 

 yond the tip of the membrane; segment T, 

 length 0.25 mm., pale, sometimes darkened 

 at the apex, two or three prominent bristles 

 just before the tip; IT, 1.05 mm., black, linear, 

 and slender; III, 0.83 mm., fuscous to black, 

 usually pale at the base, more slender than the 

 second; IV, 0.54 mm., fuscous, very slender. 

 Pronotum. — Length 0.40 mm., width at base 0.74 mm., collar and calli not apparent; 

 blacli, moderately shining, the disk having patches of deciduous tomentose pubescence 

 as on the hemelytra. Scutellum, sternum, and pleurse black, moderately shining. 



Hemelytra. — Sides nearly parallel; black, the clavus and corium having patches of 

 deciduous tomentose pubescence, the patches arranged in more or less definite rows; 

 cuneus l)lack, the apex pale yellowish. Membrane pale, tinged with fuscous, one 

 cell apparent but not distinct. 



Legs. — Long and slender, the hind femora saltatorial, coxee black, front and middle 

 femora pale yellow, the hind pair black with the apex pale; tibiae pale yellow, the 

 hind pair fuscous near the base; tarsi pale yellowish, the tips fuscous, claws black. 



Venter. — Black, moderately shining, genital claspers small but distinctive of the 

 species. 



FEMALE (MACROPTEROUS). 



Length 2.17 mm., width 0.95 mm., very similar to the male but more robust and 

 having the second antennal segment and the femora differently colored. 



Head. — Length 0.25 mm., width across eyes 0.57 mm., vertex 0.31 mm.; not differ- 

 ing from the male. 



Antennx. — Segment T, length 0.22 mm., fuscous to blackish, paler at the base; 

 II, 0.98 mm., pale with the basal and apical one-fourth blackish: III, 0.77 mm., 

 fuscous, pale toward the base; IV, 0.48 mm., fuscous. 



Fig. 7. — Halticus citri: Brachypterous 

 female. Greatly enlarged. 



