78' BRITISH ICHNEUMONS. [Pimpla. 



17. gallicola, sp.n. 



A small black species with red legs. Head black, transverse, shining, 

 smooth, liardh' narrowed beliind the entire eyes and, seen from in front, 

 broadly rotund-triangular; vertex somewhat broad and not separated from 

 the glabrous frons bv emarginations; palpi pale and all the orbits innnar- 

 ulate. Antennae ferrugineous, with the (J scape and ijedicellus white, 

 beneath. Thorax black, gibbulous, shining, with a bright stramineous 

 callosity before the radix; mesonotum distinctly and finely pilose with 

 anterior notauli ; pleurae shining, distinctly and sparsely punctate and 

 pilose; metanotum more distinctly and evenly punctate throughout 

 with the sides of the areola distinct; petiolar region not transversely 

 aciculate ; spiracles circular. Scuteflum black. Abdomen evenl}- and 

 regularly but not confluently nor closely punctate, not tuberculate and 

 hardly double length of head and thorax, badious with the base darker; 

 apices of segments neither elevated nor nitidulous ; basal segment of V 

 not longer than broad, laterally not punctate but shagreened with carinae 

 not extending beyond the centre, of $ nearly half as long again as broad, 

 with the sides shagreened and carinae reaching to its apex ; all the 

 9 segments transverse, J with the second to fourth elongate and the 

 fifth quadrate, ventral valvulae not exserted ; terebra as long as abdomen, 

 ^'al^'ulae very stout with elongate pilosity, spicula flavescent and dis- 

 tinctly explanate before the acuminate apex. Legs clear fulvous ; 9 with 

 the hind tibiae hardly infuscate before the base and not at all at their 

 apices, apical tarsal joint slightly darker and the claws basally lobate ; J 

 with the coxae and the hind tibiae centrally stramineous, hind coxae 

 above, their tibiae at apex and before base and the tarsal, joints except 

 basally, indeterminately brunneous; front femora not emarginate and 

 tibiae' straight. Wings not clouded ; stigma luteous or pale testaceous, 

 radix and tegulae stramineous ; areolet transverse-triangular, emitting 

 recurrent nervure from its apical third ; nervellus intercepting far below 

 centre and distinctly postfurcal. Length, 4I — 5 mm. 



This species differs from P. calobata in its wanting abdominal tubercles 

 and flat segmental apices, wherein it agrees with P. nucuin. But from the 

 latter it is at once distinguished by the much shorter 9 second segment 

 and the simple $ front femora. It most closely resembles P. punctivcntris 

 in the conformation of the $ femora, but the basal segment in neither 

 sex is laterally punctate and the ^ scape is white beneath. 



The above description is drawn from one male and fi\e females, which 

 were kindly sent me by Miss Bray, who bred them at Hailsham, in Sussex, 

 from the galls of Pontania viminalis, Htg., on long-leaved willow, in 1900 

 and 1 90 1. It is noteworthy, in this group of slightly varying species, that 

 all the females exactly agree infer sc. The types are in my collection. 



Peter Cameron gives (E.M.]\L 1H77, p. 200) some details, which appear 

 to refer to this species, though he simply calls it Pimpla sp. and gives no 

 reason for referring it to the genus at all. He says, " Two years ago I 

 opened a young juicy gall of Xcmalus 7'iminalis, and found inside of it a 

 small parasitic larva, scarcely more than a line in length, and which, from 

 its small size, I considered to be a Chalcid. Being desirous of watching 

 its development, I carefully closed the gall again, bound it together with 

 a thread, and placed it in an air-tight bottle ; but before doing so, I ex- 

 amined with a lens the inside of the gall, and satisfied myself that this 



