412 LÉPIDOPTÉROLOGIE COMPARÉE 



Description of imago. 



I. Mâle (PI. CLXII, Fig. 1575). The imagines of hiinii and 

 ■pilzii are very close to one another but, with a little practice, they 

 are far more easily separated than denhami and harrisonï. The 

 différence between the former pair is of the same nature as that 

 between the latter two. The ground colour of himii is much paler 

 than that of pilzii, pointing to the superior influence of the maie 

 parent ponionaria. It, however, does not follow from this, that 

 the ûnal resuit is that the insect is nearer ponionaria in looks, for 

 the insect approaches very near to typical hïrtaria in appearance 

 — a paradox that is ready explained. 



As was stated before, pilzii is very prone to having the ground 

 colour, except the subterminal pale band, suffused with black, just 

 as hirtaria is. On the contrary, this characteristic, owing to the 

 greater part pomonaria plays in deciding the ground colour, 

 appears in hiinii to a very limited extent, thus giving the transverse 

 lines greater scope for development so that, as the usual lines of 

 pomonaria and hirtaria are much the same, the extra lines of 

 hirtaria are not prevented from appearing. Further, as the ground 

 is already pale, the paler areas of pomonaria are not distinctly 

 marked. Thus, favoured by ail thèse points, the insect resembles 

 a rather smail hirtaria. The distinguishing characteristics of 

 hunii are therefore : 



a) Paleness of ground. 



b) Less tendency to suffusion. 



c) Clearness of lines. 



d) Distinctness of 2nd and médian lines. 



e) Doubling of ist line. 



/) Appearance of pale area after 2nd line and in addition to 



those resulting from the above facts. 

 g) The subterminal pale band is more toothed. 

 h) The subterminal band in the huidwings is gênerai ly more 



observable and more scalloped. 



