PRELIMINARY IJST OF APHIDID^. FOUND IN KENT. 19 



A. i^yraria, Kaltenbach. — Wye, very common and harmful in my 

 garden. 



A. cucurbiti, Buckton. — Wye, on marrows in August, 1910. 



A. sorbi, Kaltenbach. — Common in most districts, but espe- 

 cially so in the Harden area on apples, where it does much harm. 

 Also on hawthorn. The red blistered and rolled leaves are most 

 marked. 



A. 'pruni Reaumur. — Common all over the county and often doing 

 much harm to plums. I am almost certain this species also migrates 

 to the hop. 



A. heeler (B, Kaltenbach. — Occurs annually on ivy in my garden at 

 Wye from July to September, and then disappears as a winged brood, 

 first seen, 1901 ; Blackheath, June, 1906. 



A. rumicis, Linnaeus. — On docks and thistles all over the county. 

 It is undoubtedly one form of the destructive bean aphis or black 

 fly, A.fabce, KirlDy & Spence. 



A. atriplicis, Linnaeus. — Wye and Stour Valley in 1904. It 

 occurred in vast swarms in July, and settled on hops, leeks, onions, 

 beet, wild chenopodia, mangolds, cabbage, dahlias, &c., coating the 

 leaves with masses of winged females, which at once produced living 

 young. Soon after a fungoid disease swept them all off, but not 

 before great damage was done. I have not seen the species since. 



A. pajjaveris, Fabricius. — -Wye, June and July. I have found 

 this twice in my garden. One of the two dull olive-green aphides 

 found in July, August, and September on asparagus is clearly the 

 same. 



A. sambuci, Linnasus. — Swanley, 1904, swarming on elder trees. 



A. cardui, Linnaeus. — Wye, Crundale, Sellinge, in August, on 

 thistles. 



A. sambucaria, Passerini.— Wye, 1900, 1901, 1907; Swanley, 1905. 

 June and July, and then disappears. Forms dense black masses on 

 the top shoots of the elder trees. 



A. ciraimfiexa, Buckton. — -Lee, June, 1906, on salvias. 



A. pyri, Boyer de Fonscolombe. — Wye, July, 1908 ; curling the 

 leaves of pears and changing them to pale yellow^ or pale rich red. 



Genus Hyalopterus, Koch. 

 Hyalopterus pruni, Fabricius. — Wye and district, Linton, Dartford. 

 Probably all over the county. Undoubtedly the same as H. arundinis, 

 Fabricius. I have followed the leaving of the latter from reeds 

 (Juncus) and rushes [Arundo) to the plums. Mr. Willcocks tells me 

 the same happens in Cairo. Quite harmful to plums in Worcester 

 and Herefordshire and at Wye in 1903 and 1905. 



Genus Caitophorus, Koch. 

 Caitopliorus aceris, Linnaeus. — Wye, 1905 to present year, in 

 abundance on sycamore in all stages. Seems to do but little harm 

 even when swarming beneath the leaves. 



Genus Pterocomma, Buckton. 

 Pterocomma pilosa, Buckton. — Wye, with MelanoxantJius salicis 



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