Mythimna favicolor

S. favicolor Bart. Forewing pale olive brown ; veins concolorous, slightly defined by brown ; the intervals at termen with brown streaks; a small black dot at lower end of cell; an outer row of black dots on veins, sometimes reduced to two only, on veins 2 and 5 ; hindwing fuscous whitish ; - ab. lutea Tutt is paler and yellowish; — in ab. rufa Tutt the head, thorax, and forewings are bright rufous; abdomen and hindwing tinged with rufous; — argillacea Tutt has the forewing greyish luteous, the fringe pink; hindwing senea. smoky; — ab. cenea Mathew is deep orange, the hindwing smoky; the veins darker and the fringe pale; — obscura Mathew is cinnamon-brown with smoky clouding between the veins in places ; hindwing smoky; fringe pale;- pallida Mathew has the forewing very silky, pale creamy buff, the termen flushed with rosy; hind wing whitish grey; — lastly, fusco-rosea Mathew is rosy buff: the hindwing pale rosy: the veins conspicuously dark brown ; close to the ab. rufa Tutt.The wingspan is 35–40 mm. Larva pinkish ochreous reticulated with darker; dorsal line pale, narrow, with darker edges: subdorsal greyish white; a broader grey stripe above the spiracles and a pinkish ochreous one below.[2]

The moth flies from June to July depending on the location.[1] The larvae feed on Puccinellia maritima.[1]