TIXEINA 561 



difference of structure between extreme forms, the whole are so 

 closely connected by intermediate gradations that the clear 

 definition of families is by no means easy. 



Imago with forewings more or less elongate, varying from 

 oblong to linear ; hindwings varying from ovate to linear. 



Type, of markings : forewings with three small dark spots or 

 dots (stigmata), two being in disc before and beyond middle 

 respectively (first and second- discal), and one on fold before 

 middle (plical) ; hindwings without markings. 



Ovum usually roundish or oval, smooth, but comparatively 

 little known. 



Larva more or less elongate, with few hairs, usually living 

 concealed, but very various in habit. 



Pupa with free segments variable ; in earlier forms protruded 

 from cocoon in emergence, not in higher forms. 



In the diagram illustrating the phylogeny the Microptery- 

 gidae are introduced in brackets to explain the common 

 ancestry ; the Plutellidae and Tineidae must not however be 

 conceived as originating independently from that family, but 

 from an unknown common progenitor possessing hindwings of 

 the normal Tineid type. 



PHYLOGENY OF TINEINA. 



Aegeriadae Gelechiadae Oecophoridae Elachistidae 



1 ! I I 



Plutellidae Tineidae 

 I I 



[Micropterygidae] 



TABULATION OF FAMILIES. 



1. Hindwings with 8 absent . . 1. AEGERIADAE. 



8 present . . .2. 



2. Head at least partly rough-haired 6. TINEIDAE (part). 



,, smooth or with loosely appressed hairs . 3. 



3. Antennae with basal eyecap . 6. TINEIDAE (part). 



,, without eyecap . . .4. 



4. Maxillary palpi developed . . .5. 



,, ,, rudimentary . . .6. 



5. Forewings with 7 to termen 5. PLUTELLIDAE (part). 



,, 7 to costa . 6. TINEIDAE (part). 



2o 



