SFTINA. 171 



The larva is slightly hairy, with broad transverse black and 

 orange rings, and a black head. It feeds usually in com- 

 panies on the flowers of the ragwort {Senecio j acobcza\ whence its 

 name. 



This is a very common species in many places in England, 

 South Scotland, and Ireland, but in the north of Scotland it 

 becomes scarce. 



GENUS SETINA. 



Setina, Schrank, Fauna Boica, ii. (2) p. 165 (1802); Stephens, 



111. Brit. Ent. Haust. ii. p. 98 (1829). 

 Endrosa^ Hiibner, Verz. bek. Schmett. p. 167 (1822?). 

 Phika,) Zetterstedt, Ins. Lapp. p. 931 (1840). 



This is a genus comprising several species which are com- 

 mon in Europe and Asia, with moderately broad and rounded 

 yellow wings, spotted or streaked with black. The abdomen 

 is slender, and extends beyond the hind-wings. 



The Moths fly by day, or towards dusk. Several species 

 are common in the Alps, but only one is British, and this is a 

 rather local insect, which is generally found, where it occurs, in 

 the neighbourhood of the coast. 



THE DEW MOTH. SETINA IRRORELLA. 



Tinea irrorella, Linnaeus, Syst. Nat. (ed. x.) i. p. 353, no. 241 

 (1758); id. Faun. Suec. p. 383 (1761) ; Clerck, Icones, pi, 



4, fig- 5 (i759). 

 Noctua irrorea, Denis & SchirTermiiller, Syst. Verz. Schmetl 



Wien. p. 68, no. 3 (1776); Esper, Schmett. iv. p. 103 



pi. 94, figs. 3, 4(1787)- 

 Lithosia irrorata^ Fabricius, Ent. Syst. Suppl. p. 461, no. 12 



(1798). 

 Bombyx irrorea, Hiibner, Eur. Schmett. ii. fig. 105 (1800?) 



