A swarm of black aphid, Aphis fabae Scop is reported in Karachi on March 15th
, 2006 at about 1:30pm which has lasted until dusk. The collected specimens were identified as Aphis fabae Scop. Some studies were also conducted on their biology, ecology and damage to sugarbeets and beans.
M. Farhan ullah Khan, Imtiaz Ahmad, Riazuddin. (2008) SWARM FORMATION OF BLACK APHID, APHIS FABAE SCOP (HOMOPTRA: APHIDIDAE) IN KARACHI WITH REFERENCE TO THEIR BIOLOGY, ECOLOGY AND THEIR DAMAGE TO SUGARBEETS AND BEANS, , Volume 5, Issue 3 & 4.