226 M. W. R. de V. GRAHAM 



Stictomischus nitentis Delucchi 



Stictomischus nitentis Delucchi, 1955 : 90, q\ 



Type material. Type (? holotype) <$, Germany, Wolfratshausen, 19.vii.1951 

 (F. Groschke), in coll. Delucchi (not seen). 



Germany. 



Biology. Parasite of Chylizosoma [= Parallelomma] sp. (Dipt., Scatophagidae) 

 on Majanthemum (Delucchi, 1955 : 90). 



MISCOGASTER Walker 



Miscogaster Walker, 1833 : 371, 458. Type-species : M. hortensis Walker, by designation of 



Ashmead, 1904 : 278, 381. 

 Mischogaster Walker ; Thomson, 1876a : 220, 239 [invalid emendation]. 



Miscogaster Walker 

 Miscogaster Walker 

 Miscogaster Walker 

 Miscogaster Walker 

 Miscogaster Walker 

 Miscogaster Walker 



Ashmead, 1904 : 278, 279. 

 Schmiedeknecht, 1909 : 291, 295, [ex parte]. 

 Nikol'skaya, 1952 : 244-245. 

 Delucchi, 1953a : 214-215. 

 Delucchi, 1955 : 7, 55-59- 

 Peck et al., 1964 : 38. 



Delucchi's account of Miscogaster (1955) is unsatisfactory. He misinterpreted 

 M. elegans Walker (hence the synonymy which he listed under that species is 

 incorrect) ; and in his key to the species (1955 : 56) he used some characters which 

 are variable and not reliable (shape of gastral petiole, pilosity of antennal clava, 

 plicae of propodeum). I have constructed a new key based on a study of the types 

 of the species involved and of much British and foreign material compared with the 

 types. Some of the species are not easy to distinguish ; I believe that others, as yet 

 undescribed, exist on the Continent of Europe. 



Key to Species 

 (Females) 



1 Antennal scape not reaching the median ocellus, its length only slightly greater 



than half that of an eye, and distinctly less than the transverse diameter 

 of an eye. All tibiae, trochanters, and femora testaceous elegans Walker (p. 228) 

 Antennal scape reaching at least to the level of the lower edge of the median 

 ocellus, its length about two thirds that of an eye, and from nearly as great, 

 to slightly greater than, the transverse diameter of an eye. In most 

 specimens at least the mid tibiae have a dark spot at their tips, or else the 

 tibiae are more extensively infuscate ; femora and trochanters sometimes 

 more or less infuscate .......... 2 



2 (1) Antenna (Text- fig. 176) with first funicular segment 2 to 2-3 times as long as 



broad, and 1 -6 to 1 -9 times as long as the pedicellus ; sixth segment 1 -6 to 

 2 times as long as broad ; clava slightly shorter than, or at most as long as, 

 funicular segments five plus six ; flagellum virtually filiform ; only the 

 second and third segments of the clava with micropilosity. Eye 3-5 to 4-4 

 times as long as malar space. Large species, 2-2 to 3 mm. rufipes Walker (p. 230) 



