EURYMUS. 209 



Eriocolias, Watson, Entomologist, xxviii. p. 167 (1895). 



Antennae short, red, with a large but gradually-formed club. 

 Palpi long, compressed, scaly, and somewhat bristly, the terminal 

 joint short. Tarsi without appendages. Wings rather short and 

 broad; the hind-wings rounded, the fore-wings with the cell 

 rather short and broad, the hind-wings with the cell rather long 

 and narrow. Fore-wings with the apex slightly rounded off, the 

 sub-costal nervure four-branched, the first branch emitted before 

 the end of the cell, the second emitted at or beyond the end of 

 the cell, the third and fourth forming a small fork at the tip of 

 the wing. The upper radial is thrown off from the sub -costal 

 considerably beyond the cell. Middle disco cellular short, 

 straight ; lower one long, slightly curved on the fore-wings, 

 oblique, and somewhat angulated. 



The Clouded Yellows form a very distinct group, and are 

 very numerous in species, especially in Central Asia. The 

 males are generally of a yellow colour, varying from light 

 sulphur-yellow to deep orange, the latter being sometimes 

 flushed with purple, so deep, in one or two instances, as to ap- 

 pear almost black. Some species are of a dull green. Some 

 of the females are coloured like the males, and others are 

 white; and in many cases the same species exhibits two 

 constant forms of the female, one yellow and one white. 

 There is always a black central spot on the fore-wings, and 

 generally a large reddish spot on the hind-wings; on the under 

 side these are replaced by a rusty ring with a silver pupil, or by 

 two similar contiguous markings, one smaller than the other. 

 The wings are almost always more or less bordered with black, 

 the border being often veined or spotted with the ground- 

 colour, or with some paler colour; it is often veined in the male 

 and spotted in the female. 



The larvae are green, smooth, pubescent, and feed on Legu- 

 ininosce. The pupa is pointed in front 



IP p 



