136 G. E. J. NIXON 



Flagellum slightly thinner than in parallelus, the apical segments slightly more 

 gradually diminishing in length ; front and middle coxae dark ; tergite i is slightly 

 broader and more rounded behind than in parallelus in which species an apical 

 constriction is hardly noticeable ...... mandanis sp. n. 



Germany (no locality), 3 99. one the TYPE, ex Enstroma reticulata (Cockayne), 

 Sachsenwald, 2 99. 1 6*. ex Lygris reticulata (Wagner). Type in the British Museum 

 (Nat. Hist.). 



Host: Eustroma reticulata F . (Geometridae) . 



In the available specimens the hind femur is pale with a darker flush along the 

 upper surface. 



4 Propodeum dull, densely rugose all over its medial part and with a very distinct, 



transverse keel behind the spiracle that extends inwards and partly sets off a 

 postero-lateral area that is smoother and more shiny than the rest of the pro- 

 podeum ; on its inner side this area completely lacks definition and merges into a 

 median area of rugosity ; mesoscutum densely and rather sharply punctate ; 

 horizontal part of tergite 1 rugose-punctate and with a sooty dull microsculpture 

 superimposed on this ; median field of tergite 2 smooth-looking except for a satin- 

 like sheen, subrectangular and with its lateral sulci extending as far as the 2nd suture. 



Hind femur entirely reddish yellow in Scottish specimens ; faintly tipped with 

 infuscation in the single female from France .... endemus sp. n. 



Scotland: St. Andrews, 18. vi. 1936, 1 $, the TYPE; vi.1937, z 6*. 1 9. v ii935.2 99. 

 3 <$<$• {D. J. Jackson). All bred as solitary parasites of Abraxas grossulariata. 

 France: Finistere, Morlaix, 14. vi. 1954, x $• (/• &• Perkins). Type in the British 

 Museum (Nat. Hist.). 



Host: Abraxas grossulariata L. (Geometridae). 



The characteristic appearance of the apical part of tergite 1 is much less obvious 

 in the males. 



- Propodeum never with such extensive rugosity ; at most a rugose patch above the 



posterior orifice ; no trace of a keel behind the propodeal spiracle and no trace of a 

 postero-lateral area ; if tergite 1 shows coarse rugose-punctation then there is no 

 dull superimposed microsculpture ; mesoscutum virtually impunctate or punctation 

 excessively fine ; if the median field of tergite 2 could be described as rectangular 

 then it is completely rugose all over and the lateral sulci are incomplete . . 5 



5 Sulci of tergite 2 incomplete, directed towards the lateral margin of the segment and 



hence not completely defining a median field ; the median field tends to be 

 rectangular rather than triangular ......... 7 



- Sulci of tergite 2 complete, directed towards the second suture and defining a triangular 



or subtriangular field ........... 6 



6 Median field of tergite 2 tending to be smooth-looking except for a dull, satin-like 



sheen ; tergite 1 less rugose. 



Gaster beneath sometimes richly marked with yellow ; hind femur usually bright 

 reddish-yellow ; the furrow that limits the median field of tergite 2 behind is wide 

 and somewhat characteristically interrupted at middle ; flagellum long with the 

 preapical segment fully twice as long as wide. Easily confused with immunis but 

 the median field of tergite 2 less transverse (Text-fig. 128) . . caberae Marshall 9 



Europe. Type of caberae Marshall 9 and of jugosus Lyle 9 in British Museum 

 (Nat. Hist.). 



Host: Amphidasis betulae L., Bupalus piniarius L. Ennomos fuscantaria 

 Haworth, Cabera exanthemata Scopoli (Geometridae). 



- Median field of tergite 2 with rugose-striation except at base and along middle, lacking 



this satin-like sheen ; tergite 1 more rugose. 



"Apanteles caberae Marshall, 1885 : 212. 

 Syn. A panteles jugosus Lyle, 1916 : 270. Syn. n. 



