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Rhizotrogus majalis, classified as Amphimallon majalis until 1978. Larvae
Larvae are white-coloured and C-shaped, with a yellow-brown head and six jointed legs. The raster has two distinct rows of small spines that diverge outward at the tip of the abdomen. Fully grown larvae are 20–23 millimetres (0.79–0.91 in) long.
Formerly only found in continental Europe, this invasive species is now found at temperate latitudes in North America, where they are commonly called June bugs. The large, white grubs of R. majalis feed on the roots of most cool latitude grasses, both wild and cultivated. This has made the European chafer an enemy of North American lawns.