﻿NEW AND LITTLE KNOWN BRITISH APHIDES. 259 



2. jlphis chcerophylii, Koch. — Described by Koch iu 1857 

 ('Die Pflanzenlause,' p. 79, figs. 104-106) from Chcerophyllum 

 temulum. Specimens were sent me on July 17th, 1915, by Dr. 

 Durham, who found it in quantities on Charophi/llum tuberosum 

 at Hereford. Most were alate viviparous females and a few 

 apterse and nymphte. This dark species gives a fine pale violet 

 tint in 70 per cent, alcohol, not the rich port wine red of Aphis 

 ruviicis. Later Dr. Durham wrote me that the plants had been 

 ruined by this insect. 



3. Aphis apposita, Walker. — This insect does not seem to 

 have been found since Walker described it in 1850 (' Zoologist,' 

 viii. p. ciii. App.). Specimens from groundsel {Senecio vulgaris) 

 were sent me on August 27th, 1915, from Windermere by Mr. 

 A. W. Eymer Eoberts. They were all apterous viviparous 

 females, and were sheltering in the unopened flower heads. 

 They are very sluggish in nature. 



4. Aphis chrysanthemi, Koch. — This species described by 

 Koch in 1857 (Die Pflanz. p. 73, figs. 95 and 96) must not be 

 confused with the Aphis chrysanthemi of Walker (* Zoologist,' 

 vii. p. Ivi. App.). Koch's species was described from specimens 

 on Chrysanthemum leucanthemum, the " ox-eye daisy," and 

 Matricaria chamomilla, the " wild chamomile." Walker's from 

 the former plant only. I found this aphid on August 2nd at 

 Wye on the wild and cultivated ox-eye daisies. They were all 

 apterpe, and clustered in dense masses up the flower stalks of the 

 cultivated kinds and under the leaves of both. They occurred 

 in such large colonies that the blossoms became stunted and 

 many died. Some colonies were six inches long. The colour of 

 the aphides was dull greenish-black ; a few individuals were shiny. 

 On August 6th a few nymphae appeared, and I hoped to rear the 

 alate female. But by the 14th practically all the colonies had 

 died oif from an attack of parasites. On August the 80th the 

 same insect occurred again on Matricaria chamomilla close to 

 the attacked daisies. This species was largely attended by ants 

 {Lasius fuliginosus) . 



5. Aphis cratcegi, Kaltenbach. — This aphid does not seem to 

 have been recorded in Britain. Buckton's Aphis cratcegi, Kalt. 

 (Mono. Brit. Aphid, ii. p. 35, pi. xlvii. figs. 1-3) is certainly not 

 Kaltenbach's species (Mono. Fam. Pflanz. p. 66, 1843). This 

 insect was taken by me several years ago on apples at Marden, 

 Kent, where it did some damage and was recorded as Aphis 

 sorhi, Kalt., and also on hawthorn at Wye in May, 1910, but no 

 alate females could be obtained. On May 23rd, 1914, Mr. Eymer 

 Eoberts sent me specimens taken on the hawthorn at Alice 

 House, Windermere. These colonies consisted of alate females, 

 many nymphae, and a few apterje. As this insect is of economic 

 importance on account of its attacking the apple, I append a 

 new short description of it : — 



