Classification of the British Tortricida: 



based on the structure of the male and 



female Genitalia. 



TORTRICID>E. 



I. ARCHIPSIDII. 



Male with valvar broad. Uncus, Gnathos and Transtilla well 

 developed ; Cornuti deciduous. Female with Ovipositor 

 flattened; Signa a single smooth horn with bulbed base. 



Genus 1. Argyrotaenia, Stp. type politana, Haw. 

 Argyrotaenia politana. Haw. 2—1 



Valva distinctly rounded; transtilla indenc. Cornuti 9-10, 

 very broad, short, pointed (apple pips). 



Ductus bursa) narrow, a strong thickening at the 

 junction with the bursa. 



Genus 2. Archips Hb. type piceana, L. 



In the male the valvre are broad with the sacculus well 

 developed. Uncus strong, generally long, with gnathos 

 well developed. Transtilla a simple band, strong. Cornuti 

 deciduous. 



In the female the ovipositor angulated, flattened. 

 Ostium generally with well divided operculum. Ductus 

 bursae very long, narrow. Signum long, horn shaped. 



Archips piceana, L. S. J. Capper l— l 



Valva rounded; sacculus long curved not reaching margin 



of valva. Uncus cylindrical, apex rounded and flattened; 



gnathos pointed. /Edceagus sharply pointed; cornuti three, 



long. 



Ostium wide with central lobe behind Signum long, 



base short, rounded. 



