PTEROMALIDAE OF N.W. EUROPE 283 



Female gaster ovate to lanceolate, pointed apically, the ovipositor sheaths at 

 least very slightly, but often far, exserted ; last tergite almost always 

 turned upwards with respect to the preceding one and separated from it 

 dorsally by a membranous gap ........ 35 



35 (34) Female propodeum extremely short, almost nil, medially ; exserted portion 



of ovipositor sheaths, in profile, as long as or somewhat longer than the hind 

 tibia ; basal cell of fore wing pilose except at its base, speculum closed 

 below ; thorax dorsally with at most the mesoscutum obscurely greenish, 

 the rest bronze or dull purplish . . . atropurpureus Walker (p. 311) 



- Female propodeum medially not so extremely short as in the above ; if ap- 



proaching this condition then the basal cell of the fore wing is pilose over at 

 most its distal half, the speculum is at least partly open below, and either the 

 thorax dorsally is bright green to blue, or the ovipositor sheaths are rather 

 less far exserted . . . . . . ... . .36 



36 (35) Fore wing with basal cell pilose except at its base ; speculum closed below. 



Mesoscutum thickly hairy (Text-fig. 253) ...... 37 



- Fore wing (Text-figs. 254, 256) with basal cell pilose over at most its distal 



half ; speculum most often open below. Mesoscutum more sparsely hairy 



as in Text-fig. 255 39 



37 (36) Spiracles of propodeum distinctly separated by a small space from the hind 



margin of the metanotum. Thorax dorsally more or less, at least the 

 mesoscutum, greenish ; scutellum with three to four pairs of bristles 



hirtulus sp. n. (p. 309) 

 Spiracles of propodeum (Text-fig. 253) touching the hind margin of the 

 metanotum. Mesoscutum most often bronze or purplish black, less often 

 somewhat greenish ; scutellum with five to ten pairs of bristles . . 38 



38 (37) Eyes inconspicuously hairy, the longest hairs not exceeding the diameter of 



an ocular facet in length. Scutellar frenum with nearly isodiametric 



- reticulation. Mesoscutum rarely greenish. 



Thorax, Text-fig. 253 ..... laticornis Walker (p. 308) 



Eyes more obviously hairy, the length of their longest hairs about 1 -5 times 

 the diameter of an ocular facet. Scutellar frenum in some lights appearing 

 longitudinally strigose-reticulate. Mesoscutum often greenish. 



Fore wing venation, Text-fig. 261 . . . terminalis Walker (p. 309) 



39 (36) Ovipositor sheaths far exserted, the length of the exserted portion, as seen in 



profile, from about three quarters as long as, to somewhat longer than, the 



hind tibia, and directed strongly obliquely upwards .... 40 



- Ovipositor sheaths at least slightly less far exserted ..... 42 



40 (39) Body, except pronotum, usually entirely bright green to blue ; occasionally 



the scutellum and axillae darker, in which case the anterior margin of the 

 clypeus (Text-fig. 258) is almost angulate . . . . . . 41 



- Body mainly bronze, usually with some purplish reflections ; at most the 



mesoscutum bright green or bluish. Anterior margin of clypeus evenly 

 curved, or even slightly truncate medially ...... 42 



4 1 (40) Fore wing (Text-fig. 254) with basal cell bare except for a single or double row of 



hairs on the basal vein ; speculum extending as a broad bare strip below the 

 marginal vein as far as the stigmal vein ; radial cell mainly bare. Anterior 

 margin of clypeus (Text-fig. 258) almost angulate. Antennal scape at 

 least ventrally, sometimes mainly, testaceous. Surface of mesoscutum 

 and scutellum, especially the latter, relatively duller amaboeus Walker (p. 311) 



- Fore wing with basal cell more or less pilose over its distal third ; speculum 



extending below the marginal vein only to about half its length ; radial cell 

 more or less pilose. Anterior margin of clypeus (Text-fig. 259) roundly 



