568 M. W. R. de V. GRAHAM 



Pteromalus naubolus Walker. Lectotype female designated by Graham (19566 : 

 256). 



Pteromalus meconotus Ratzeburg. Type presumed lost. The species was placed 

 in synonymy with leucopezus Ratzeburg by Mayr (1903 : 395). 



Etroxys (Cecidostiba) rugifrons Thomson. Syntypes, 12 specimens. LECTO- 

 TYPE, a female labelled " Nat 15/7 " and " rugifrons Ths ". 



Thompson (1958, Cat. Paras. Predat. Ins. Pests, sect. 2, pt. 5 : 589) stated that 

 " Ratzeburg is not known to have described a species under the name " leucopeza " ; 

 the species referred to is probably C. leucopyga Ratz., described in the genus Ptero- 

 malus ". This statement is erroneous, and the fictitious name " leucopyga " was 

 previously cited by Dalla Torre (1898 : 133) and Nikol'skaya (1952). 



Widely distributed in Europe. 



Biology. Probably associated specifically with the galls of Biorrhiza pallida 

 (Oliv.), according to Askew (1961 : 65) who found its larvae feeding on those of 

 Olynx skianeuros (Ratzeburg) in these galls. Mayr (1903 : 395-396) listed other 

 Cynipids as hosts [of leucopeza], but these records need checking in view of the 

 recognition of a second species (adana Askew) closely related to hilaris. I have 

 captured imagines of hilaris in the field from May to July. Askew (1961 : 64-65) 

 says that there are two annual generations, emerging May-June and July-September. 



Cecidostiba (Cecidostiba) adana Askew 



Cecidostiba adana Askew, 1961 : 60, 63, $ $. 



Type material. Holotype $, France : Rennes, reared from gall of Andricus 

 calicis Burgsd. (R. Folliot), in Hope Department ; paratypes in the same collection. 



France. 



Biology. Reared from galls of Andricus calicis Burgsd., A. kollari Htg., and 

 Cynips longiventris Htg. Imagines April-May. 



At first I felt doubtful whether adana was really distinct from hilaris (Walker). 

 However, its relatively longer propodeum, as well as its biology, indicate that it is 

 a valid species. Dr. Askew pointed out to me that adana is known only from the 

 Continent of Europe and attacks Andricus kollari amongst other hosts. In Britain 

 hilaris does not seem to attack kollari at all, which one might expect it to do if 

 adana and hilaris were merely forms of one species. The relative curvature of the 

 dorsal surface of the thorax, as seen in profile, appears to me to be variable and not 

 a reliable character for separating adana and hilaris. 



Note. The North American species (Dinotus acutus Provancher, Cecidostiba 

 dendroctoni Ashmead, and probably the others mentioned) placed in Cecidostiba by 

 Peck {in Muesebeck, Krombein and Townes, 1951 : 557) and Peck (1963 : 699-700) 

 do not belong to this genus. They should be placed in or near the genus Dinotiscus 

 Ghesquiere. 



