''Spialia therapne'', the Corsican red-underwing skipper, is a

butterfly Butterflies are winged insects from the lepidopteran superfamily Papilionoidea, characterized by large, often brightly coloured wings that often fold together when at rest, and a conspicuous, fluttering flight. The oldest butterfly fossi ...

in the family

Hesperiidae Skippers are a group of butterflies placed in the family Hesperiidae within the order Lepidoptera (moths and butterflies). They were previously placed in a separate superfamily, Hesperioidea, but have since been placed in the superfamily Papilion ...

. It is found on the Mediterranean islands of

Corsica Corsica ( , , ; ; ) is an island in the Mediterranean Sea and one of the Regions of France, 18 regions of France. It is the List of islands in the Mediterranean#By area, fourth-largest island in the Mediterranean and lies southeast of the Metro ...

and

Sardinia Sardinia ( ; ; ) is the Mediterranean islands#By area, second-largest island in the Mediterranean Sea, after Sicily, and one of the Regions of Italy, twenty regions of Italy. It is located west of the Italian Peninsula, north of Tunisia an ...

.Fauna Europaea
/ref> The

wingspan The wingspan (or just span) of a bird or an airplane is the distance from one wingtip to the opposite wingtip. For example, the Boeing 777–200 has a wingspan of , and a wandering albatross (''Diomedea exulans'') caught in 1965 had a wingsp ...

is 19–21 mm. The underside of hindwing is brick-red, with a white macular band, of which the discocellular spot is proximally neither dentate nor prolonged. On the underside the spots and fringes are yellowish red.

Adalbert Seitz Friedrich Joseph Adalbert Seitz, (24 February 1860 in Mainz – 5 March 1938 in Darmstadt) was a German physician and entomologist who specialised in Lepidoptera. He was a director of the Frankfurt zoo from 1893 to 1908 and is best known for editi ...

''Die Großschmetterlinge der Erde'', Verlag Alfred Kernen, Stuttgart Band 1: Abt. 1, Die Großschmetterlinge des palaearktischen Faunengebietes, Die palaearktischen Tagfalter, 1909, 379 Seiten, mit 89 kolorierten Tafeln (3470 Figuren) Adults are on wing from April to September in multiple generations per year.Schmetterlinge und ihre Ökologie
/ref> The larvae feed on ''

Sanguisorba minor ''Sanguisorba minor'', the salad burnet, garden burnet, small burnet, burnet (also used for ''Sanguisorba'' generally), :wiktionary:pimprenelle, pimpernelle, Toper's plant, and burnet-bloodwort, is an edible perennial plant, perennial herbaceou ...

''. They make a shelter of spun leaves.

References

Spialia Butterflies described in 1832 Butterflies of Europe Taxa named by Jules Pierre Rambur {{Pyrginae-stub