86 BRITISH ICHNEUMONS. {Pimpla, 



the $ of Pimpla anmdinalor (q.v.). Thomson, however, treated it as a 

 true Pimpla fScambusJ allied to P. detrita in its suboppositc and hardly 

 postfurcal ner\-ellus, short and apically obtusely rounded spicula, elongate 

 and in 9 stout onychii, the elongate second ^ abdominal segment and 

 excised front femora. Schmiedeknecht relies entirely upon Brischke as 

 regards the 9 > "^^hich, if bred, is likely to be correctly associated and 

 says it has marked ^)!>///cz/A'j-characters. 1 do not known the 9 > so can 

 express no opinion upon it, except that Thomson is very unlikely to err 

 in a matter of affinities ; the $ , however, is very decidedly a Scambus and 

 extremely closely allied to Pimpla calohata and P. sagax — so closely that 

 Dr. Brauns, some years ago, referred a cJ of the former species in my col- 

 lection to it. The doubt respecting Gravenhorst's types arises, as usual, 

 through lack of any mention of them by 'Taschenberg. 



This species was originally bred by Schrank solitarily from Tortrix 

 micana and his /. Rayellae from larvae of Tinea Rayellae. Gra^■enhorst 

 found it among undergrowth in Germany towards the end of August. 

 Giraud's doubtful record is from Piedmont and Thomson's from Sweden. 

 Brischke bred it in Pmssia from Retinia resinella, Tachyptilia populeUa and 

 the cocoon of some Ncmatiis. Its synonymy is yet too mixed, however, 

 for distributional records to be reliable. There are no localised British 

 records of this species, which appears to have been introduced by Des- 

 vignes in 1856. I have seen males captured by Beaumont at Plumstead 

 in July and Enniscorthy early in September. There are six males in my 

 collection, taken at Lastingham in Yorkshire by Marshall, Rookley Wild- 

 erness in the Isle of Wight by myself in June and early in August by 

 Morey, Tostock in Suffolk in June by Tuck; and by myself in Barnby 

 Broad in early June, and sitting on a leaf of Cornus sanguinca in my 

 garden at Monks' Soham early in June, just before dusk. 



23. detrita, Holmgr. 



Pimpla graminellae, Gr. I. E. iii. 181. ? (part .); Gir. Verb. z-b. Ges. 1863, 

 p. 1290, i . P. detrita, Holmgr. Sv. Ak. Handl. 1860, n. 10, p. 23 ; Thorns. O.E. 

 viii. 753 et xiii. 1413, i ? ; Schm. Zool. Jabrb. 1888, p. 514, excl. S {nee Briscb.). 

 P. Gravenlwrstii, Tascb. Zeits. Ges. Nat. 1863, p. 266, 3 ? . 



A somewhat slender, black species with red legs and explanate onyches. 

 Head black, .smooth and shining, ver)- slightly narrowed behind the but 

 feebly emarginate eyes ; face with griseous pilosity and finely punctate 

 on either side ; frons glabrous, deplanate and centrally canaliculate 

 throughout; palpi of 9 piceous, of S white. Antennae almost two- 

 thirds of the length of the body, filiform and subpilose ; dull testaceous, 

 with the (J pedicellus and rarely extreme apex of scape flavous beneath ; 

 first flagellar joint basally pale and hardly longer than the second. 

 Thorax nitidulous and black, with a flavous or rufescent callosity before 

 the radix ; mesonotum obsoletely punctate and centrally deplanate with 

 anteriorly distinct notauli, which in 9 coalesce discally ; pleurae 

 glabrous and nitidulous, sternum finely punctate with long and sparse 

 hairs ; metathorax somewhat narrow with griseous pilosity, nitidulous 

 with distinct and diffuse punctures, laterally longitudinally sulcate ; areola 

 narrow, parallel-sided, distinctly costate laterally and incomplete apically; 

 petiolar region glabrous, spiracles circular. Scutellum black, subdeplan- 

 ate, obsoletely punctate and pubescent. Abdomen black throughout, 

 coarsely punctate and pubescent though more finely towards the anus, 



f J parallel-sided and of 9 distinctly constricted towards base and 



o 



