Which of the following is the scientific name for the Alfalfa Caterpillar?

The scientific name for the Alfalfa Caterpillar is indeed Colias eurytheme. This caterpillar is the larval stage of the alfalfa butterfly, which is recognized for its association with alfalfa fields and other legumes. Understanding the scientific nomenclature of pests like the Alfalfa Caterpillar is important for effective pest management strategies in agriculture.

The other names listed are associated with different organisms. Spodoptera exigua, for example, is known as the beet armyworm, while Acyrthosiphon pisum refers to the pea aphid, and Aphis craccivora is the cowpea aphid. Each of these pests has different hosts, lifecycles, and management practices, signifying the importance of accurate identification in agricultural pest control.