Everard E. Blajíchard : Aphid notes 187 



Álate virgogene. 



Color : Head, thorax and abdomen shining to dull brick red, 

 with three black lateral spots anterior and one c'ontiguous and in- 

 terior to each cornicle. Antennae, cornicles and eyes, blackish. 

 Beak dark brown to blackish with dista! segment black. Legs blac- 

 kish save the basal halves of femora, which are yellowish. Cauda 

 greenish to clear yellow with the extreme, tip slightly darkened. 



Morpkological characters : Dorsum and venter provided with 

 piliferous tubercles as in the apterous virgogene. Antennae with te- 

 gument of first four segments smooth, faintly imbricated on V and 

 distinctly imbricated on VI and filament. III provided with hairs 

 subequal in length to the máximum diameter oí' segment, and with 

 from 27 to 4o sensoria scattered over its length to within i/5 of 

 apex. Beak, cauda, cornicles, tarsi and legs as in the apterous vir- 

 gogene. YVing veins clear cut, brownish; stigma paler. 



Relative measurements : 



Length 3. 00 



Width 1.20 



f. t. 1 II III IV V VI i'. 



Anlennac o. 10 0.16 o. 10 0.90 0.7^ 0.70 0.16 i.o5 



Cauda. o. 5o 



Cornicles o. 75 



jSt 2 u<i 31c! 



Femora... o.g5 0.89 1.07 



Legs ' Tibiae . . . i.56 i.56 2.i4 



'Tarsi..... 0.12 o. 10 o.i4 



Rostrum. o. 82 



Hab. Punta Chica, San Isidro, Flores and Cañuelas in the province 

 of Buenos Aires, and Potrerillos and Cacheuta, province of Mendoza; on 

 Sonchus, Cosmos, Áster, Wedelia and compositae spp. Type material in 

 my collection. 



Obs. Cióse to solidaginis (Fabr.). I have named it lizerianam in ho- 

 nor of my distinguished friend and entomologist Carlos Lizer, from 

 whom I received the type specimens and many others that figure in my 

 collection. 



Macrosiphum rosae (Linn.) (fig. 2 ) 



Apterous virgogene. 



Color : Bright green or bright reddish brown. Antennae blac- 

 kish, with III and basal half of IV paler. Legs brownish yellow with 



