PLUTELLIDAE 



This family is now of only moderate extent, and contains no 

 dominant genera ; it would seem to have been in great measure 

 supplanted by its derivatives. Its characters, as usual in 

 very early groups except when isolated, arc somewhat un- 

 defined and fluctuating. Although nowhere very prominent, 

 it is relatively more numerous in Australia, New Zealand, and 

 oceanic islands than elsewhere. 



Larva more or less elongate, with 10 prolegs ; usually 

 feeding in a slight web on leaves or seeds, seldom mining. 

 Tupa with segments 9-11 free, sometimes also 8 and in 6* 12 : 

 usually not protruded from cocoon in emergence. 



An exotic genus is introduced (in brackets) into the 

 diagram, to explain the phylogcny ; but the British genera 

 in any case givo only an inadequate notion of tho family. 



1'llYI.OGKNY OF Plutellidae. 



Atemelia 



1 

 Prays 



1 

 ponomeuta 



i 



Ortliotaelia Cerostoma 

 1 1 







1 

 l'lulolla Eidophasia 



1 1 



Glyphipterys 





1 

 [Saptha] 



1 



Chorcutis 

 1 





1 

 Simaethia 





Tabulation of Genera. 



1. Hindwings with 4 absent . . .2. 



,, ,, all veins present . . 4. 



2. Forewings with 7 and 8 stalked . . .3. 



,, „ 7 and 8 separate 3. Yponomeuta. 



3. Labial palpi moderately long, subascending 2. Prays. 



,, short, drooping . . .1. Atemelia. 



4. Antennae thickened with scales towards base 



7. ElDOrHASIA. 



,, not thickened with scales . . 5. 



5. Hindwings with 6 and 7 stalked . . 5. Cerostoma. 



,, „ separate . . 6. 



C>. Antennae in $ ciliated with long fascicles . 7. 



„ shortly ciliated . . .8. 



