Tnchomma\ 



BRITISH ICHNi:UMONS. 



233 



pleurae longitudinally striate; metathorax declived throuf,diout and reticu- 

 late, with its central sulcus trans-striate. Scutellum laterally or entirely 

 flavous, broad and subdeplanate with a suijerficial central sulcus ; not 

 rarely only red-marked, or entirely black. Abdomen red, with its disc 

 more or less broadly black ; terebra just one-third length of abdomen. 

 Legs red with the anterior, and in $ hind, coxae flavous; hind tibiae 

 apically nigrescent, and the V coxae sometimes more or less black. 

 Wings small and slightly infumate, witli, stigma testaceous and nervures 

 darker; parallel nervure emitted from about centre of brachial cell; 

 nervellus not at all intercepted. Length, 9-12. 



Known by the striae beneath the radices, and its size. I bi-lie\c> \\\v\\' 

 are two British species mixed under this name, but there is no Conti- 

 nental kind like it and 1 find no constant distinctive characters; the 

 marsh-specimens from the Broads and .Matley Bog are darker, with the 

 scutellum always black and niiu h k-ss coarsely sculptured, aiul the hind 

 fc-mora more or less nigrescent, the smallest is S nun. 



Not very coniinon with us nor upon the C'oiiliiieiit, aiipareiith neari\- 

 confined in its ])arasitism to the Tortricidae, especially those ot .Mvrica 

 and willows; it etnerges direct from the- host-chrvsalis, spiiunng no 

 cocoon of its own. Brischke bred it in I'nissia from pupae ol Kirnis 



