INSECTS 



DIPTERA 



Flies 



Out of the three thousand odd species of Diptera at present known 

 to be British the following list contains the names of some three hundred 

 and sixty a result which is solely due to the paucity of collectors of 

 this order of insects. For owing to its natural features, and especially to 

 its richness in heath-land, Surrey is peculiarly adapted to the needs of 

 the sunshine-loving, flower-haunting Diptera ; so that if properly studied 

 during a series of years the actual total of species would probably not 

 fall short of those of Hampshire or Devon. 



An asterisk (*) signifies that the specimen referred to is in the 

 collection of the British Museum, and that the present writer is respon- 

 sible for the determination. Collectors whose names frequently recur are 

 indicated by their initials, as follows : 



Y. = Lt.-Col. Yerbury. 



O. G. = W. R. Ogilvie Grant. 



A. B. = A. Beaumont. [Such of Mr. Beaumont's species as are preserved in his 

 own collection, and have not been presented by him to the British 

 Museum, were determined either by the late Dr. Meade or by Mr. 

 Billups.] 



F. W. T. = F. W. Terry. 



G. H. V. = G. H. Verrall. 



E. E. A. = E. E. Austen. 



F. B. J. = F. B. Jennings. 



T. R. B. = T. R. Billups. [According to a note by Mr. Billups in Entomologist, vol. 

 xxiv, (1891), p. 236, some at least of his captures were determined by 

 the late Dr. Meade, and others by Mr. Brunetti.] 



Br. Fl. = Verrall, British Flies, vol. viii. 



C. = Curtis' British Entomology, vol. viii. 



In the case of species recorded in entomological journals the refer- 

 ence to the original record is given : Ent. Mo. Mag. = Entomologist's 

 Monthly Magazine ; Ent. = Entomologist. 



Species recorded in Curtis' British Entomology and elsewhere have 

 only been included when there seemed reasonable probability of their 

 having been correctly determined, while the nomenclature has been 

 revised in all cases. 



ORTHORRHAPHA 



NEMATOCERA 



CECIDOMYIDJE 



Cecidomyia pteridis, Mi'ill. Shirley ; larvas 

 in rolled leaflets of fronds of Pteris 

 aquilina ; Sept. 1871 ; A. Mtiller, 

 Ent. Mo. Mag. vol. viii. (1871), 

 p. 99 



salicina, Schrk. South Norwood ; larvae 



infesting the shoots of Salix alba ; 

 Aug. 1869; A. Mtiller, ibid. vol. 

 vi. (1869), p. 109 



taxi, Inchb. Godalming ; bred from 



galls on branches of Taxus baccata ; 



CECIDOMYID.S (continued) 



June, 1869; A. Mtiller, loc. cit. 

 p. 61 



Cecidomyia ulmariae, Bremi. Godalming ; 

 bred from galls on Spiraea ulmaria, 

 found July 25, 1865 ; first ima- 

 gines emerged Aug. 29, 1865 ; also 

 bred from galls on same plant, found 

 Aug. i, 1865 ; imagines emerged 

 Aug. 10, 13, 1 6, 1865 ; galls also 

 found Oct. 13 ; H. W. Kidd, 

 Ent. Mo. Mag. vol. iv. (1868), p. 



233 



urticas, Perris. Merton Abbey ; bred 

 from galls on Urtica dioica, found 



151 



