Harmful insect for leaves and stems of sugarcane is
Pyrilla
A.Pyrilla perpusilla commonly known as sugarcane plant. It is the most destructive foliage-sucking pest of sugarcane.
B.Agrostis capillaris. Agrostis capillaris (common bent, colonial bent, browntop) is a rhizomatous and stoloniferous perennial in the grass family (Poaceae).
C.Leptocorisa oratoria, the rice ear bug, is an insect from the familyAlydidae, the broad-headed bugs.
D. Idiocerus is the mango leafhopper.
So, the correct answer is ‘Pyrilla’.