Exorista. 319 



than basal half, second joint short. Palpi black. Thorax black, nearly 

 dull, greyish pruinose, especially in front and at the sides, with five 

 black stripes as there is a middle stripe between the usual inner 

 stripes; the three middle stripes abbreviated behind, the lateral 

 broader, interrupted at the suture; scutellum blackish. Thorax 

 black-haired ; four postsutural dorsocentrals. Scutellum with four 

 about equal bristles on each side, the apical crossing. Three sterno- 

 pleural bristles, Abdomen elongated conical, somewhat flattened, 

 black, on third, fourth and fiftli segment a white pruinose front 

 band, shifting with blackish tessellations according to view, the hind 

 margins black, shining, and a narrow middle stripe black, Abdomen 



Fig. 78. Wing of E. Westennanni. 



black-haired, with discai and marginal bristles, the latter a pair on 

 second and third and a row on fourth segment ; the discai generally 

 two pairs on third and fourth segment. Legs black ; hind tibiæ with a 

 not dense row of unequal anterodorsal bristles, in which one long 

 bristle; claws and pulvilli somewhat elongated. Wings a little brownish 

 tinged, especially along the veins; first posterior cell ending a little 

 before apex of wing; discai angle rectangular; apical cross-vein 

 concave, generally most curved near the angle; posterior cross-vein 

 doubly curved, Squamulæ white. Halteres dark yellowish. 



Female. Similar; frons as broad as the eye; third antennal 

 joint shorter than in male, not thrice as long as second, 



Length, Somewhat varying, 5 — 9 mm. 



E. Westermanni is rare in Denmark; at Copenhagen (Schlick), 

 and in Frederiksberg Have at Copenhagen (Stæger), Ruderhegn, 

 Donse (the author); the dates are 2^/5 — ^/g. The species is known as 

 parasitic on Cucullia prenanthis and Calymnia affinis; two of our 

 specimens are labelled as bred from a Tortricid in July. 



I have examined Zetterstedt's type which is in our collection; 

 also the female mentioned by Zetterstedt is in our collection, and 



