Step 1: Understanding the Concept:
Yellow mite (Polyphagotarsonemus latus) is a major sucking pest of fiber crops, particularly affecting the genus Corchorus (jute).
Step 3: Detailed Explanation:
Jute is cultivated as two distinct commercial species in India:
1. Corchorus capsularis (white jute)
2. Corchorus olitorius (tossa jute)
Among these, Corchorus olitorius (Olitorius jute) has a thinner leaf cuticle and softer foliar tissues, which makes it highly susceptible to the feeding of yellow mites.
The mites feed on the ventral surface of young leaves, causing them to curl downward, turn coppery-brown, and eventually wither, severely restricting plant growth.
Hence, the yellow mite primarily attacks Olitorius jute.
Step 4: Final Answer:
The correct option is 2, which corresponds to Olitorius jute.