LEPIDOPTÉROLOGIE COMPAREE 3/3 



second liiie is iiot in the form of an elongated S as m hirtaria, 

 but follows very closely the very slightly curved path of zonaria. 



The remamder of the lines are awkward to interpret for the 

 praesubtermnial suJfusion in zonaria is one solid blackish block, 

 preceded by an equally solid white band, whereas the subterminal 

 band in hirtana, which is coloured lil>:e the ground, is preceded 

 by an irregular blackish suffusion, before which we hâve a patch 

 of the ground, traversed by a transverse Hne parallel to the second 

 line. Further, the subterminal band of zonaria is regular and 

 near to the termen, and that of hïrtaria shows a tendency to 

 scalloping and is further away from the termen. 



In the hybrid, whilst the subterminal band is stronger, broader 

 and paler than in Mrtaria, it is also much broader than in zonaria 

 due to an attempt to combine the bands of the tvv^o species. In 

 hirtaria, the band shows a distinct interruption in the middle, 

 and this the hybrid displays. l'he prsesubtermmal suffusion is 

 weak and the additional line is présent as in hirtaria, but the 

 directions are those of zonaria. The terminal suffusion is more 

 solid and is less freckled than m hirtaria. 



Compared with the latter species, the veins on both zonar'.a and 

 denhamï are more continuously emphasised in black, but like 

 hirtaria, those of the hybrid tend to be visible in the pale bands. 



The fringes are ail of a unicolorous, smoky black colour as 

 in zonaria and not black spotted as m hirtaria. 



In hirtaria, the ground colour of the hindwings is slightly paler 

 than in the forewings and the hybrid shows this character. In 

 zonaria, only the «^econd line and the subterminal white band are 

 developed, whilst in hirtaria, the médian, second, and subterminal 

 bands are more or less shown, but not to the extent of the two on 

 zonaria. The resuit is that, while some hybrids follow hirtaria 

 almost exactly, a great nmxiber show a weak médian line, but a 

 very strong and regular second Ime and subterminal band. The 

 latter lias the usual zonaria suffusion before it. 



As the veins are not so heavily outlined in black as in zonaria, 

 the second line is regular and lacks the ragged appearance of 



