540 M. W. R. de V. GRAHAM 



Males and females reared from Urophora cuspidata Mg. in florets of Centaurea 

 scabiosa L., Cambridgeshire, Burwell, Devil's Ditch, vii.1939 (M. Niblett). All the 

 above Trypetidae form galls, either in the florets or in the stem of the host plant. 

 Dr. O. Peck sent me specimens of elevatus, labelled as follows : "St. John's, 

 Newfoundland, 12. v. 1958, Ray F. Morris, ex Knapweed seed pod ". It is interesting 

 to note that as early as 1848 Walker recorded that elevatus " Destroys Trypeta 

 pugillata " [sic] and that ceropasades " Destroys Trypeta pupillata and T. mar- 

 ginata " [Hoplochaeta pupillata Fin. and ? Sphenella marginata (Fin.)] ; but these 

 records cannot now be checked. Imagines of elevatus may be found in the field 

 from May until August or (occasionally) September. 



Habrocytus musaeus (Walker) comb. n. 



Pteromalus tarsatus Zetterstedt, 1838 : 422, $, syn. n. [primary homonym of P. tarsatus Nees, 



1834]- 

 Pteromalus Musaeus Walker, 1844a : 340, $. 

 Habrocytus try petae Thomson, 1878 : 112, $, syn. n. 



Type material. Pteromalus tarsatus Zetterstedt. Syntypes, 2 $. LECTOTYPE 

 labelled in Zetterstedt's handwriting " P. tarsatus $. Kengis ". 



Pteromalus musaeus Walker. One female, LECTOTYPE, remounted on a 

 card-point and bearing a Waterhouse label. 



Habrocytus trypetae Thomson. Syntypes on 28 pins. The first pin bears labels 

 " L-d 27/6 ", " exclus. e Tephritis serratulae " and " Trypetae Ths " ; it carries 

 3 males and 2 females, of which the lowermost female is designated LECTOTYPE. 



Britain, Sweden (but no doubt widely distributed in Europe). 



Biology. I have examined many specimens which were reared in England ; 

 Berkshire, Cumnor Hill, near Oxford in March 1941 (Prof. G. D. H. Carpenter), 

 from heads of Spear Thistle (Cirsium vulgar e (Savi) Ten.) infested by Terellia 

 serratulae (L.) ; and some from the same host on Carduus nutans L. (M. Niblett) 

 (material in the Hope Dept., Oxford). Thomson reared it in Sweden (Skane, 

 Lund), also from the same host. Imagines appear in the field May-July. 



Habrocytus cardui (Erdos) comb. n. 



Cecidostiba cardui Erdos, 1953 : 228, 230-231, o* ?• 



Type material. Syntypes, Kalocsa, Hungary, reared 18.viii.1946 from inflores- 

 cences of Carduus acanthoides L., in coll. Erdos. I have not seen the types but 

 believe I have interpreted the species correctly. 



Britain, Czechoslovakia, Hungary. 

 Biology. See above. Imagines in August. 



Habrocytus myopitae sp. n. 



(Text-fig. 380) 

 $. Body black with rather weak metallic reflections ; thorax bronze, olive, or dark bluish, 



