596. 

 STENOCERA WALKERI. 



Order Hymenoptera. Fam. Cynipidae. 



Stenocera Walk., Curt. 



Antenna: Inserted below the middle of the face, not quite so long 

 as the head and thorax, slender, nearly filiform, geniculated and 

 10-jointed, basal joint long, 2nd obovate, 3rd elongated, the 

 remainder decreasing a little in length, the apex conical. 

 Head suborbicular, notched in front : eyes remote, prominent, subor- 

 bicular : ocelli 3, large and forming a spacious triangle in front of 

 the crown. Thorax oblong, depressed; coWax elongated, narrowed, 

 sublunate : scutellum large, suborbicular, each side of the base ex- 

 cised. Abdomen sessile, long, subfusiform, concave, apex pointed. 

 Wings, superior with a subcostal nervure divided beyond the middle, 

 but forming only a little button not a ray : inferior short, narrow and 

 lanceolate. Legs short and slender : tibiae, anterior the shortest, in- 

 termediate the slenderest, with a spine at the apex, hinder pair the 

 broadest, being compressed : tarsi 5-jointed, intermediate a little the 

 shortest and stoutest, hinder the longest: claws and pulvilli minute. 

 Male unknown. 



Walkeri Curt. Guide, Gen. 612. n. 1. — Brit. Ent. pi. 596. ^ . 



Finely shagreened, coppery-purple above, bright green beneath, 

 sides of the head, thorax and the whole metathorax of the same 

 colour : antennae black : head with a broad deep groove from 

 the crown to the clypeus, with a chalybeous stripe down the 

 middle of the face ; mesothorax and scutellum concave : abdo- 

 men shining, the tip green, wings iridescent, the nervure fus- 

 cous ; coxae, hinder pair bright green ; thighs bluish-green, 

 tipped with ochre ; base and apex of tibiae ochreous, interme- 

 diate legs of the same colour, with the base of the thighs and a 

 suffused space on the tibiae, piceous ; terminal joints of all the 

 tarsi brownish. 



Mr. F. Walker took 2 females off Lime and Oak-trees at 

 Soutbgate the middle of July, one of which he presented to me. 

 When I first began to study this and the following species 

 I thought they would form 2 sections of a genus, but as I pro- 

 ceeded such important differences presented themselves, that I 

 found the formation of 2 genera would be unavoidable, and 

 having only one specimen of Stenocera I have been under the 

 necessity of confining myself to a description of the external 

 characters, but more elaborate ones are given of Calosota. 



Type of the Genus, Calosota vernahs Walk. 

 Calosota Walk., Curt. 



Antennce inserted below the middle of the face, remote, geni- 

 culated, as long as the thorax, nearly filiform, compressed, pu- 

 bescent and 13-jointed in both sexes, basal joint very long, 2nd 



