79 



GENUS 6. Rhyacionia lib. TYPE buoliana, Schif. 



This genus is capable of being divided into several 

 genera. It will be seen we have included citrana in it. 

 The male, and signa of the female, suggest a close affinity, 

 but it will be noticed that the ovipositor shows a strong 

 difference, due to peculiarity of oviposition. A parallel case 

 may be seen in the species incertana of the Cnephasia group. 

 The way in which the species of this large group run into 

 each other only to drift away and return requires many 

 connecting links before a satisfactory classification becomes 

 discernible. F N.P. differentiated the first and third species 

 in the " Entomologists Record " for 1909, Vol XXI., p. 3, 

 at the request of E. R. Bankes and proved conclusively that 

 there were two species. 



Valva more or less cardinate, indent below the cucullus; 

 Uncus atrophied; socii reduced to mere pads. ^Edceagus 

 cardinate, irregular in formation, often dentate. Cornuti of 

 such diversity as to suggest different genera. 



Ovipositor (except in citrana) flactened, angular; 

 cornuti very irregular, embracing other genera. 



Rhyacionia buoliana Schif, 43 



E. R. Bankes. 



Valva stumpy, inwardly curved along the costa, emarginate 

 below the cucullus on the outer margin. Uncus rudimentary, 

 the tegumen forming two slight projections; socii round 

 hairy pads. ^Edoeagus cardinate, ending in obtuse point. 

 Cornuti four, not deciduous. 



Ovipositor flattened, angular. Ostiura wide; ductus 

 bursa? short. Bursa delicate, without signa. 



Rhyacionia pinivorana, r A. 22 



IF. \Jtntftbridtic; .-I. Lofthonsc. 



Valva stumpy: cucullus roundly pointed at the anal angle, 



