Blue cheese of blue veins. The distinctive flavor and aroma of blue cheese arises from methyl ketones (including 2-pentanone, 2-heptanone, and 2-nonanone) which are a metabolic product of "Penicillium roqueforti". These compounds are not formed in other types of cheese fermented by bacterial acidification alone. In the European Union, many blue cheeses, such as Cabrales, Danablu, Gorgonzola, Roquefort and Blue Stilton, carry a protected designation of origin, meaning they can bear the name only if they have been made in a particular region. Similarly, individual countries have protections of their own such as France's Appellation d'Origine Contrôlée and Italy's Denominazione di Origine
Red-veined darter Red-veined darter The red-veined darter or nomad ("Sympetrum fonscolombii") is a dragonfly of the genus "Sympetrum". There is genetic and behavioural evidence that "S. fonscolombii" is not closely related to the other members of the genus "Sympetrum" and it will at some time in the future be removed from this genus. "Sympetrum fonscolombii" was named under the protonym " Libellula fonscolombii " by the Belgian entomologist Edmond de Sélys Longchamps, in 1840, in honor of the French entomologist Étienne of Fonscolombe (hence the species name). Its name is sometimes spelt "fonscolombei" instead of "fonscolombii" but Askew (2004) gives the latter