MANGOLD APHIS. 
41 
This Bean Aphis infests many plants, but I have not found it 
recorded as a Mangold pest; whilst another kind, the Aphis papaveris, 
bearing such a strong resemblance to it that it does not seem clear 
how far it has at times passed under the same scientific names, is 
known to frequent Mangolds. There is yet another kind, the 
A. atriplicis , which frequents Oraclie or plants allied to Mangolds, 
and of which some varieties in their early stage are exceedingly like 
the corresponding stages of “ Collier.” 
The full description, and much information regarding these, will 
be found in ‘ British Aphides,’ vol. ii. ; but, as it is of considerable 
importance to make out what kind of black Aphis it is that attacks 
the Mangolds, I give a short note of some of the chief distinctions 
between these three very similar species taken from the above source.* 
Aphis rumicis, Linn. “ Collier.” — Wingless viviparous female : 
Black; three middle joints of horns, and also the shanks, obscurely 
ochreous. Winged viviparous female: Black, or sometimes slightly 
rusty brown. LarvaB (lice), slaty grey ; afterwards velvety black. 
Pupte (next stage, when they have wing-cases), fore body slaty grey; 
abdomen black, with white spots on each side. 
Aphis papaveris , Fab.—Wingless viviparous female : Nearly black 
to the naked eye; horns and legs very pale greenish, almost white. 
Winged viviparous female : Fore body black; abdomen olive-green, 
with some obscure bands, and dark side spots. Larvae at first pale 
green. Pupae (quoting from the only place in which I am aware of 
their being described), spotted with white on the back. 
Aphis atriplicis, Linn.'—Winged viviparous female: Dark olive; 
abdomen very large, obscurely barred with black; sides spotted. 
“Larvae of all shades from green through olive to black.” It is not 
clear from the disposition of one paragraph whether a wholly black 
variety, and a black variety spotted with downy white patches on the 
abdomen, are larvae, or wingless viviparous females. Pupae: Fore 
body olive ; abdomen black, with white patches.” 
It will be seen from the above descriptions how difficult it is to 
make sure of what kind it is that is doing the damage, especially if 
onty specimens in an early stage, when it may chance some of those 
of any kind of the above, black spotted with white, were present. 
Therefore, it does not appear sure that it is our regularly present 
Bean Aphis which was attacking the Mangold; and, as the attack 
was noticed as unusual, it may be hoped it will not occur again, unless 
under such peculiarly favourable circumstances for Aphis-attack as 
those of last year. 
There does not appear to be any way of checking the attack on the 
* ‘British Aphides,’ by G. B. Buckton, F.R.S., vol. ii. 
