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Sphingonotus rubescens is a species of band-winged grasshopper in the family Acrididae. It is found in the Palearctic.
Sphingonotus rubescens inhabits rocky, stony or sandy terrain of all kinds, such as rocky slopes, dunes or ravines.
The adults can be observed almost all year round. Eggs are laid in the ground.
Sphingonotus rubescens is difficult to separate from related species, such as Sphingonotus caerulans.
A thermophilic species, it is indifferent to substrate type. It generally prefers steppe or subdesert environments, always with a high degree of dryness and completely or almost completely devoid of vegetation, preferring flat, gently sloping terrain where sunlight is greatest. Its altitude range extends from sea level in numerous locations along the Mediterranean coast to very high altitudes that can exceed 1,900 m. Imagoes can be observed year-round.
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Distribution of Sphingonotus rubescens includes the Iberian Peninsula, Canary Islands, Cape Verde, Madeira, North Africa, Arabian Peninsula, Türkiye to India, Kazakhstan, Mongolia.
Grasshopper with a body length of about 25 mm and a wingspan of about 50 mm. Brownish coloration. Narrow vertex with a marked keel; forehead with four well-defined keels. Elliptical eyes. Thin antennae with several blackish bands. Prothorax with a very slight keel; very short anterior part; rounded posterior edge, barely angular. Chest and lower abdomen pale yellowish. Hind femora with an interrupted blackish band on the inner side, and a row of five blackish spots on the outer side. Tegmina with numerous irregular rings, formed by black veins. Ashy-hyaline wings with black veins.
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