PTEROMALIDAE OF N.W. EUROPE 565 



Eyes smaller, separated by about 1-25 times their own length ; ocelli smaller, 

 the hind ones separated by slightly more than, usually about 1 -5 times, their 

 own major diameter from the eyes. Fore wing with speculum open below ; 

 stigma smaller, separated by 3 to 3-5 times its height from the costal edge of 

 the wing. Combined length of pedicellus and flagellum equal to breadth of 

 head. Head and thorax bright green to bronze-green semifascia (Walker) (p. 566) 



(Males) 



1 Pronotal collar not margined, or with at most a trace of a carina visible in 



some lights. Basal cell of fore wing having its distal third or more pilose. 

 Antennae with combined length of pedicellus and flagellum slightly less than 

 breadth of head ; all funicular segments, except sometimes the first, at 

 least slightly transverse. Body mainly greenish bronze to coppery 



(ANASTIBA sgen. n.) geganius (Walker) (p. 565) 



Pronotal collar sharply margined throughout, or except just at the sides. 

 Basal cell of fore wing bare, or with relatively few hairs distally. Antennae 

 with combined length of pedicellus and flagellum about equal to, or slightly 

 greater than, breadth of head ; at least some of the funicular segments, 

 besides the first, quadrate or longer than broad. Body mainly green to blue 

 (CECIDOSTIBA s.str.) 2 



2 (1) Anterior margin of clypeus deeply emarginate or incised medially. Fore wing 



with stigma usually about as high as long, sometimes slightly longer than 



high ........ hilaris (Walker) (p. 567) 



- Anterior margin of clypeus truncate or slightly curved forwards. Fore wing 



with stigma slightly to very distinctly longer than high .... 3 



3 (2) Fore wing with speculum closed below ; basal cell closed below except at base. 



Eyes separated by only 1-15 to 1-2 times their length. Head and thorax 

 dark to bright blue. Combined length of pedicellus and flagellum about 

 equal to breadth of head. Mesoscutum thickly clothed with dark bristles 



docimus (Walker) (p. 566) 



- Fore wing with speculum open below at least proximally ; basal cell open 



below. Eyes separated by 14 to 1-45 times their length. Head and 

 thorax mainly some shade of green. Combined length of pedicellus and 

 flagellum slightly greater than breadth of head. Mesoscutum less thickly 

 clothed with dark bristles .... semifascia (Walker) (p. 566) 



CECIDOSTIBA (ANASTIBA) sgen. n. 



(Derivation : Greek ava, towards, -+- part of the generic name Cecidostiba. 

 Gender : feminine). 



Type-species. Gastrancistrus geganius Walker, 1848. 

 For characters, see key (pp. 564, 565). 



Cecidostiba (Anastiba) geganius (Walker) 



Gastrancistrus Geganius Walker, 1848 : 105, 157, <J. 

 Cecidostiba geganius (Walker) Askew, 1961 : 59, 60, <$ $. 



Type material. Type male in BM(NH), bearing a Waterhouse label ; recognized 

 by Graham, validated by Askew (1961 : 60) who redescribed the species. 



Britain, France. 



