The wingspan is 35–40 mm. Forewing dull red brown, with slight lilac-grey tinge in places; a distinct black preapical costal bar; upper stigmata large, with slight pale rings; lower lobe of reniform dark; median shade forming a brown space between the stigmata; a black dot near base of cell; hindwing ochreous or yellowish grey. ab. bajula Stgr. is smaller than the type and suffused with grey, without any red tinge; in the northern form punctata Auriv, the lines are prominently marked by dots on the veins; purpurea Tutt, grisea Tutt and coerulescens Tutt are merely colour variations.[3]
Figs 3, 3a, 3b, 3c, 3d, 3e, 3f, 3g larvae in various stages
Biology
The moth flies from July to August depending on the location.
Larva polyphagous, brown or grey, with a red tinge; the lines pale; a row of oblique dark sublateral bars; a pale bar on segment 12; head pale brown. The larvae feed on Myrica gale, Rubus species and other plants and trees.[4]
References
^Species 2000 & ITIS Catalogue of Life: April 2013 (April 2013). "Xestia baja". Encyclopedia of Life. Retrieved 2013-06-28.{{cite web}}: CS1 maint: numeric names: authors list (link)
^Seitz, A. Ed., 1914 Die Großschmetterlinge der Erde, Verlag Alfred Kernen, Stuttgart Band 3: Abt. 1, Die Großschmetterlinge des palaearktischen Faunengebietes, Die palaearktischen eulenartigen Nachtfalter, 1914
