112 feed. v. theobald. 



Table of Kose Aphides. 



I. Cornicles long. 



A. Frontal lobes large (Macrosiphum). 



a. Cornicles black . . . . . . rosae, L. 



aa. Cornicles green ...... 



b. Apterous $ antennae, third seg- 

 ment with many sensoria . . rosaefolium, sp. n. 

 66. Apterous $ antennae, third seg- 

 ment with 3-5 sensoria . . rosaeollae, sp. n. 



B. Frontal tubercles very small. 



c. Antennae moderately long (Myzus). 



d. Capitate hairs on head, not on 



body.. .. .. .. Tosarum, Kalt. 



dd. Capitate hairs on head and body 



Cornicles always green . . neorosarum, nov. nom. 

 Cornicles black in alate 



female . . . . . . tetrahodus, Walker. 



cc. Antennae of apterae very short, only 



J length of body {Aphis) . . dirhodus, Walker. 



II. Cornicles short (Hyalopterus). 



e. Apterous $ green ; alate $ green, with 

 head, thoracic lobes and patch 

 on body black . . . . . . trirhodus, Walker. 



ee. Apterous $ green with black markings ; 



alate 5 body all green . . . . dilineatus, Buckton. 



III. Cornicles cone-shaped (Lachnus) . . , . rosaey Mord. 



Macrosiphoniella chrysanthemii Del Guercio (% 8). 



Macrosiphoniella bedfordi, Theobald, 



Del Guercio, Kedia, vii, p. 332, fig. 30 (1911) ; Theobald, Bull. Ent. Res., iv, p. 318, 

 fig. 4 (1914). 



Alate viviparous female. — Deep red and black, abdomen deep red. Antennae 

 slightly longer than the body, the two basal segments black, the first much larger than 

 the second ; the third long, nearly as long as the sixth, with 28 to 32 sensoria spread 

 over the whole length, some large, and the lateral ones projecting, giving a marked 

 tuberculate appearance ; the fourth segment about as long as the fifth, with 6 to 7 

 sensoria ; the sixth as long as the fourth and fifth together, its basal area about 

 one-third the length of the fifth, flagellum long ; last three segments imbricated ; 

 hairs simple. Cornicles thick and black, rather short, not so expanded basally as 

 in the apterous female, most of the surface markedly reticulated, becoming at the 

 base densely imbricated. Cauda black, as long as or slightly longer than the cornicles, 

 with four pairs of long lateral hairs and two median dorsal ones. Anal plate black, 

 spinose ; wings tinged with brown and somewhat darkened along the veins. Legs 

 with the base of the femora and most of the tibiae pale. Proboscis with the apex 

 black, last two segments nearly equal. Length, 2 "8-3 mm. 



