794 M. W. R. de V. GRAHAM 



Antenna (Text-fig. 651) with scape distinctly shorter than an eye, reaching level of vertex or 

 a little above it ; combined length of pedicellus and flagellum about equal to breadth of head ; 

 flagellum subcylindrical, rather more slender than in maculipennis ; first funicular segment 

 longer than the pedicellus, segments 2-5 a little longer than broad, sixth subquadrate ; clava 

 longer and narrower than that of maculipennis, nearly 2-5 times as long as broad. 



Legs stout, especially femora ; fifth tarsal segment of all tarsi rather swollen, pulvilli and 

 claws large. 



Fore wing with costal cell with upper surface bare, lower surface with a complete row of hairs ; 

 proximal part of wing bare, except for 2-3 hairs on the basal vein ; marginal vein about 18 

 times as long as the stigmal vein, and slightly longer than the postmarginal vein. 



Gaster about i-6 times as long as broad, slightly longer than head plus thorax, slightly 

 acuminate apically. 



o". — Colour as $ but pedicellus brown ; all coxae mainly black ; gaster blackish with a yellow- 

 ish spot on the basal tergite. Antenna : pedicellus only about 1-5 times as long as broad, 

 somewhat shorter than the first funicular segment ; flagellum distinctly stouter than the 

 pedicellus, latter as seen in dorsal view ; clava about 3-5 times as long as broad, about as long 

 as z\ of the preceding funicular segments ; hairs of flagellum slightly shorter than the breadth 

 of the segments that bear them, standing out at about 45 °. Thorax nearly i-6 times as long 

 as broad. Median area of propodeum fully half as long as the scutellum, only about 15 times 

 as broad as long. Postmarginal vein hardly shorter than the marginal. Gaster oval, as long 

 as but narrower than the thorax. 



Holotype $. Czechoslovakia : Southern Slovakia, Kovacov, 7.V1.1958 (A. H offer), 

 in Graham collection. 



Paratype^. Czechoslovakia : Moravia, Pavlovske Kopce, 6.V.1961 (A. Hoffer), 

 in Graham collection. 



These specimens were amongst some material kindly given to me by Dr. Hoffer. 



Arthrolytus (Arthrolytus) maculipennis (Walker) 



(Text-fig. 652) 



Ptevomalus maculipennis Walker, 1836 : 191, $. 



Arthrolytus punctatus Thomson, 1878 : 158, ex parte [excluding lectotype]. 



Holcaeus cecidomyiae Ashmead, 1897 : 137, ex parte (<£). 



Holcaeus cecidomyiae Ashmead ; Marchal, 1897 : 83. 



Homoporus laniger Marchal, 1897 : 83, 95. 



Arthrolytus maculipennis (Walker) ; Gahan, 1933 : 71-75, fig- 17, 6" ?• 



Arthrolytus maculipennis (Walker) ; Graham, 1956& : 254. 



Type material. Ptevomalus maculipennis Walker. Lectotype $ designated by 

 Graham (19566 : 254). In that paper I mentioned the possibility that Arthrolytus 

 punctatus Thomson might be a synonym of maculipennis. Since then I have 

 re-examined Thomson's syntypic series of punctatus, which proves to be a mixed 

 one, containing some specimens of maculipennis, others (including the lectotype) 

 which are the same as discoideus (Nees). 



Holcaeus cecidomyiae Ashmead. Lectotype (actually cited as " holotype ") male 

 selected by Gahan (1933 : 73-74). It is in U.S.N.M. and according to Gahan, 

 bears the name label in Ashmead's handwriting, also a small hand-written label 

 " Type ". Gahan considered it to be the same as maculipennis. The species was 

 described from material reared in France from the Hessian fly, by P. Marchal. 



