592 M. W. R. de V. GRAHAM 



Key to European Species 



(Females) 



i Scutellum distinctly duller than the mesoscutum, with very fine and dense reti- 



culation. Head, mesoscutum, axillae, and scutellum bright to dark blue, the 

 vertex and scutellum sometimes dark violet or violet-bronze. Clypeus 

 relatively dull, with moderately strong reticulation. Antennae with combined 

 length of pedicellus and flagellum approximately equal to, or very slightly less 

 than, breadth of head ; scape beneath, sometimes entirely, testaceous. 

 Gaster slightly shorter than head plus thorax, 1-7 to 19 times as long as 

 broad. Head in dorsal view 2-2 to 2-4 times as broad as long ... 2 



Scutellum not or hardly less shiny than the mesoscutum, with relatively less fine 

 and less dense reticulation. Head, mesoscutum, axillae, and scutellum 

 greenish or bronze-green, the scutellum sometimes bronze. Clypeus, except 

 in one species which has the antennal scape dark, with delicate alutaceous 

 sculpture and relatively shiny. Proportions of flagellum, gaster, and head 

 sometimes otherwise than in the above ....... 3 



2 (1) Fore wing with marginal vein 1-45 to 1-5 times as long as the stigmal vein ; post- 



marginal 1-15 to 1-2 times as long as the marginal; stigmal vein forming an angle 

 of about 40° or slightly less with the postmarginal . decipiens Thomson (p. 594) 

 Fore wing with marginal vein about 1-7 times as long as the stigmal vein ; post- 

 marginal approximately equal in length to the marginal ; stigmal vein forming 

 an angle of about 45 ° with the postmarginal. Antenna, Text-fig. 445 . sp. indet. 



3 (2) Clypeus relatively dull, with rather strong reticulation which is slightly raised 



above the general surface. Postmarginal vein approximately equal in length 

 to the marginal. Head in dorsal view 2-2 to 2-25 times as broad as long. 

 Antenna (Text-fig. 446) with combined length of pedicellus and flagellum 

 barely equal to breadth of head. Gaster 1-65 to 1-9 times as long as broad, 

 hardly as long as head plus thorax .... repandus sp. n. (p. 593) 



Clypeus relatively shiny, with delicate alutaceous sculpture which is not raised 

 above the general surface. The other characters not all present in combina- 

 tion ............. 4 



4 (3) Fore wing with postmarginal vein 0-85 to 1 -05 times the length of the marginal 



vein. Head in dorsal view 1-92 to 2-05 times as broad as long. Gaster 1-7 to 

 2 times as long as broad, at least slightly shorter than head plus thorax 



gracilentus (Boucek) (p. 593) 

 Fore wing with postmarginal vein i-i to 1-2 times the length of the marginal 

 vein. Head in dorsal view (Text-fig. 444) 2-1 to 2-2 times as broad as long. 

 Gaster 2 to 2-55 times as long as broad, as long as, or even very slightly longer 

 than, head plus thorax ...... gracilis (Walker) (p. 592) 



Males are included in my key to $ Holcaeus (q.v.). (p. 587) 



Cricellius gracilis (Walker) comb. n. 

 (Text-fig. 444) 



Pteromalus gracilis Walker, 1836 : 477, $ [nee Eutelus gracilis Walker, 1834]. 

 ? Pteromalus Alcman Walker, 1839 : 265, 6*- 



Type material. Pteromalus gracilis Walker. Lectotype $ designated by Graham 

 {in Graham & Claridge, 1965 : 284). 



Pteromalus alcman Walker. Syntypes, 3 <$. LECTOTYPE, the second specimen, 

 bearing a Waterhouse label ; I believe it is the male of gracilis. 



