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Genus 10. Euspila Stph. type compositella, F. 



This and the iollowing genus form a small group, closely 

 allied, but divided by the spined tegumen. 

 Valva with distinct cucullus; indent before the sacculus. 

 Tegumen spined with fine spines set in sockets. .Edceagus 

 on peduncle; cornuti fixed and deciduous. The eighth 

 segment developed ventral ly in a flap from which extend the 

 two sides laterally in the form of arms, terminating in a 

 corematal pad from which long filiform hairs protrude like a 

 sweep's brush; the two sides are joined dorsally by an 

 exceedingly delicate membrane, covering which is the final 

 segmental plate. 



Ovipositor flattened. Ostium with pouch-like opening. 

 Signa modified pilleate, or entirely absent. In an American 

 species interstinctana, which is almost identical in wing 

 markings with internana, the signa are also entirelv absent. 



Euspila caecana, Schlg. 2 — 1 



Cucullus long, ovate. Spines on tegumen confined to the 

 apex. 



Ostium delicate; signa absent; Bursa round, with a 

 round blind sac. 



Euspila pallifroivtclla, Z. 1—1 



Cucullus ovate- emargination wide, not deep; tegumental 

 spines carried over a considerable portion of the tegumen. 



Ostium cup-form, constricted before neck, set behind 

 with stout scales, bursa with long, blind sac. Signa short 

 hardly corniform. 



Euspila compositella, F. 3—1 



Cucullus more rounded: emargination deep; tegumental 

 spines over a considerable portion of tegumen. 



Ostium shorter than preceding species; bursa with blind 

 sac: signa very wide. 



