AFRICAN APHIDIDAE — PART II. 



Ill 



the apex ; nearly as long as the third antennal segment. Cauda long, narrow, green, 

 with three pairs of lateral bristles, the apical pair short ; about three-fourths 

 the length of the cornicles. Legs moderately long, green, except for the apices of 

 the tibiae and tarsi which are brown ; tibiae with short hairs, anal plate dusky. 

 Length, 2-2 "3 mm. 



Egypt : Ghezireh, Gizeh and Cairo, 20 . iy . 03, y . 10, 12 . iii . U {F. C . Willcoch). 



Food-plants. Roses. 



Described from a series of apterous females and three alate females. It is a marked 

 species, easily distinguished from any other rose Macrosiphum by the sensorial 

 structure of the antennae in both forms of female and by the markedly short third 

 pair of caudal hairs. 



Another species of green Macrosiphum in Britain (rosaeollae) difiers in haymg only 

 1 to 3 sensoria on the third antennal segment in the apterous female. From 

 M. rosae, L., it can at once be recognised by the green cornicles. 



It might be Passerini's Siphonophora rosaecola, but his description is equally 

 applicable to the British species {rosaeoihe). 



Appended here is a Hst of the Aphides which occur on the rose from all parts of the 

 world. 



Q 



a 



Fig. 7. Capitate hairs of : 

 A, Jlyzus rosarum, Kalt. ; B, JLT. rosarum, Buckton. 



List of Rose Aphides. 

 Macrosiphum rosae, L. 

 Macrosiphum rosaefolium, sp. noy. 

 Macrosiphum rosaeollae, sp. noy. 

 Macrosiphum rosaecola, Pass. 

 Macrosiphum solanifolii, Ashmead. 

 Macrosiphum rosaeformis, Das, sp. nov. 

 Myzus rosarum, Kalt. 



Myzus neorosarum, nom. noy. [rosarum, Buckton). 

 Myzus t-etrahodus. Walker, 

 Aphis dirhodum. Walker. 

 Hyalopterus trirhodus, Walker, 

 Hyalopterus dilineatus, Buckton. 

 Lachnus rosae, Mordvyilko. 



Of these I have not seen Macrosiphum solanifolii, a potato aphis recorded from 

 Eosa by Miss Edith Patch in America, nor Mordwilko's Lachnus rosae. The species 

 Macrosiphum rosaeformis was sent me from India by Mr. Das, vrith. a note that pro- 

 bablv Buckton's record of Macrosiphum rosae, L., from India was an error, as this 

 species resembles rosae closely in appearance, but is yery different in antennal 

 ornamentation. He has sent me this Aphid, but I am waiting for him to describe it. 



