﻿THE ENTOMOLOGIST 



Vol. XLVIILl APEIL, 1915. [No. 623 



NOTES ON A LIME TREE APHIS, PA(fWPKPI^, 

 REAUMURI Kaltenbach, NEW TO BRITAIN. ^% 



By Fred V. Theobald, M^A. "^' ; '■* M^ 



(Plates IV. & V.) K^lfir.....,,.^^^ 



A VERY marked leaf-monstrosity was noticed by Reaumur on 

 the lime {Tilia) and figured by him (Ins. iii. pi. 23, figs. 1-3) 

 due to the work of an aphis. The insect causing this 

 malformation was described by Kaltenbach as Schizoneura 

 reaumuri in 1843 (Mono. d. Pllanzenlause, pp. 175-176) ; 

 Ratzeburg in 1844 also listed it as Aphis (5.) Reaumuri Kalt. 

 but only refers to it in a few words ('Die Forst Insecten.' iii. 

 p. 221, 30). It has also been referred to by Kieffer in 1901 

 (Ann. Soc. Ent. Paris, t. 70, p. 532) ; Schouteden lists it from 

 Belgium in 1903 (Ann. Soc. Ent. Belg. t. 47, p. 188) . Del Guercio 

 also gives some valuable notes on it with figures in 1904 ('Eedia,' 

 ii. fas. 2, pp. 306-315), and I quite agree with this aphidologist 

 in placing it in Koch's genus Pachypappa ('Die Pflanzenlause,' 

 p. 269, 1857) ; lastly, Trotter in 1907 mentions it (' Marcellia,' 

 Avellino, t. 6, p. 31, n. 26). Neither Buckton nor Walker refer 

 to it as occurring in Britain, so that this is the first record of 

 this evidently rare aphid and one which is of special interest. 



Lichtenstein (' Les Pucerons, Monographie des Aphidiens,' 

 p. 30, n. 58) appeared inclined to consider that Koch's 

 Pachypappa vesicalis {' Die Pflanzenlause,' p. 272, figs. 346-347) 

 was the same as Kaltenbach's Schizoneura reaumuri ; Del Guercio 

 first clearly pointed out that they are very distinct, vesicalis 

 being a poplar insect, whilst reaumuri lives on Tilia or limes. 

 There is no doubt on this point, but they both belong to the 

 same genus called Pachypappa by Koch. 



In June, 1914, Mr. E. E. Green sent me alive specimens of 

 these insects from Bearsted, Kent, and on the 13th of that 

 month I visited the locality, and through the kindness of his 

 sister found them swarming on a broad-leafed lime tree in her 

 garden. It was causing a very unsightly appearance to the tree 

 and was undoubtedly doing a considerable amount of harm to 

 the foliage. More than this, it was a great annoyance on 



ENTOM. APRIL, 1915. H 



