Banana silvering thrips, Hercinothrips bicinctus

Silvering thrips externally look like Helionothrips kadaliphilus and causes similar damage to leaves, but much less common in South India.

Image source: https://nzacfactsheets.landcareresearch.co.nz/factsheet/InterestingInsects/Banana-silvering-thrips--Hercinothrips-bicinctus.html
hercinothrips1  Banana silvering thrips is externally similar to leaf thrips and causes silvery streaks and patches on the underside of leaves. hercinothrips  The nymphs of silvering thrips are similar to those of leaf thrips, but do not carry trash.