82 BRITISH ICHNEUMONS. [Phygadeuoti. 



10. rusticellae, Bridg. 



Phygadeuo7i rusiireUae, Bridg. Trans. Ent. Soc. i886, p. loi, <? ?• (?) P- siihtilis, 

 Or. I. E. ii. 701 ; Tasch. Zeits. Ges. Nat. 1S65, p. 55, i ; cf. Brisch. Schr. Nat. Ges. 

 Danz. 1882, p. 342. 



Head hardly narrowed behind the eyes ; frons smooth and shining. 

 Antennae distinctly slender, black ; flagellar joints piceous ; scape of $ 

 flavous, of 9 ferrugineous beneath. Thorax nitidulous ; niesonotum 

 finely punctate ; metathoracic areae distinct, with the areola transverse. 

 Scutelluni black. Abdomen elongate-ovate, smooth and shining ; of $ 

 black, with segments two to four mainly red ; of 9 red, with the basal 

 segment alone black, somewhat long and slender, with the post-petiole 

 thrice broader than petiole and terebra quite half the length of the 

 abdomen. Legs normal, red, with the anterior paler ; hind tarsi, base and 

 apex of their tibiae, and sometimes the base of their coxae, infuscate. 

 Wings with the stigma black. Length, 4-5 mm. 



Bridgman says this species is closely allied to P. vngnfis, but differs from 

 it in having the coxae red, sometimes the hind pair dark basally above or 

 very rarely almost entirely dark, and in the coloration of the scape. He 

 also indicates its relation with P. austriacus, Grav., and adds that the 

 colour of the 9 abdomen is occasionally black, with only the two basal 

 segments apically red. 



[I am quite unable to find sufficient grounds for supposing the present 

 species to be distinct from Gravenhorst's little-known male, P. subti/is, 

 since the coloration of the hind femora appears the only discrepancy : — 



Head with palpi and centre of mandibles stramineous ; clypeus discreted 

 and centrally bidentate. Antennae filiform, rather longer than half the 

 body, with scape flavous beneath. Thorax nitidulous; metathorax elongate, 

 feebly rugose, sub-glabrous, with complete areae; areola sometimes con- 

 fluent with the very short and vertical petiolar area ; apophyses obsolete 

 and spiracles circular. Scutelluni black. Abdomen oblong, deplanate, 

 shining ; black, with segments three, four, and sometimes the second 

 fulvidous, sides of the fourth infuscate ; basal segment very slightly 

 explanate throughout, feebly carinate and canaliculate, with obsolete acicu- 

 lation and tubercles, post-petiole nearly twice longer than broad ; second 

 segment nitidulous and extremely obsoletely punctulate. Legs red ; 

 anterior paler, with the base of the coxae black and apices of the tro- 

 chanters flavidous ; hind legs black, with apices of the trochanters and 

 centre of tibiae flavidous. Wings not or hardly clouded ; stigma nigres- 

 cent, radix and tegulae white. Length, 5 mm. J 



This species, which has not yet been discovered on the Continent, was 

 bred by Mr. \V. H. B. Fletcher from old birds' nests at Bognor — perhaps 

 from Tifien rusticella ; I have seen nothing like it. P. snbtilis, which was 

 probably erroneously recorded from Britain by Marshall, in 1870, has 

 been found only at Breslau, in July. 



