Acronicta rumicis
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Acronicta rumicis, the knot grass moth, is a species of moth which is part of the genus Acronicta and family Noctuidae. It was first described by Carl Linnaeus in his 1758 10th edition of Systema Natu
Acronicta.rumicis
Rumex obtusifolius, or broad-leaved dock
Drawing of A. rumicis egg shape
Caterpillar
Industrial melanism
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Industrial melanism is an evolutionary effect prominent in several arthropods, where dark pigmentation has evolved in an environment affected by industrial pollution, including sulphur dioxide gas and
Acronicta rumicis
…received much attention and research. A. rumicis feeds on maize, strawberries and other herbaceous plants. The moth's evolution has been affected by the industrial melanism that occurred in Europe during the late 19th and early 20th centuries, causing a dramatic increase in two aberrations (salicin and lugubris), which…
Intermediate insularia form (between pale typica and dark carbonaria in tone) of peppered moth on a lichen-covered birch tree: Bernard Kettlewell counted the frequencies of all three forms.
Tree bark covered in shrubby and leafy lichens forms a patterned background against which non-melanic disruptively patterned moth camouflage is effective.
Odontopera bidentata, Scalloped Hazel, Trawscoed, North Wales, June 2016 Flickr janetgraham 84
Odontopera bidentata