CRAMBIDAE 387 



temperate regions. Imago with forewings elongate, often very 

 narrow ; the palpi are remarkably uniform in structure. The 

 natural flight of these insects is usually towards sunset, but 

 most of them are very readily disturbed by day. 



Ovum oval, ribbed and reticulated, or smooth. Larva 

 elongate, with few hairs ; usually feeding in silken galleries 

 on grasses or moss. Pupa in a cocoon within the larval 



galleries. 



Fhylogeny of Crambidae. 



Calamotropha Crambus 



Platytes Euchromius 



Chilo 



Tabulation of Genera. 



1. Forewings with 7 out of 8 . . .2. 



,, ,,7 separate . . .3. 



2. Ocelli concealed . . .1. Calamotropha. 



„ exposed, distinct . . .2. Crambus. 



3. Forewings in <? with semitransparent patch in 



cell . . 4. Euchromius. 



,, ,, without such patch . . 4. 



4. Face with conical horny projection . 5. Chilo. 



,, without projection . . .3. Platytes. 



1. Calamotropha, Z. 



Face with short prominence. Ocelli present, concealed with 

 scales. Antennae in S ciliated. Forewings : 7 out of 8. 

 Hindwings : 4 and 5 connate, 7 out of 6. 



A small widely scattered genus, closely related to Cramhus. 

 Imago with forewings oblong-triangular, termen hardly oblique. 

 Larva said to mine in leaves ; the observation is an ancient 

 one, and has not been confirmed. 



1. C. paludella, Hb. 21-36 mm. Forewings whitish-fuscous 

 or light brownish, sometimes partially suffused with whitish ; 

 a basal blackish dot, another near it, two or three representing 

 first line, one in disc beyond middle, and a series representing 

 second line, all sometimes very obscure or almost obsolete. 

 Hindwings white. 



Devon, Suffolk, Norfolk, in marshes, local ; C. Europe, WC. 



