﻿258 THE ENTOMOLOGIST. 



both being grown fairly commonly in this neighbourhood, to say 

 nothing of the other members of the Eutacese on which it may 

 feed. It is only during the last two years that I have been able 

 to obtain the pupee in sufficient quantities to breed from them, 

 and as both summers have proved somewhat cool ones I should 

 not perhaps be justified in concluding that hianor is always 

 single-brooded in the conditions which obtain in the South of 

 England. I may mention, however, that in 1914 about 75 per 

 cent, of the pupge of the spring brood did not disclose imagines 

 until the following spring, and that this year an even larger 

 percentage show every sign of doing the same. 



(To be continued.) 



Errata. — Page 226, Hue 35, et seq., Euj^hocades troilus should be 

 Eiiplioeades troilus. Line 37, Iphiclides ajax (turnus) should read 

 IphicUdes ajax; turnus, of course, being a synonym of Jasioniades 

 glaucus. Page 228, line 29, Benzoni should be Benzoin, and line 31, et 

 seq., hinder a benzQ7ii should be Binder a benzoin. 



NOTES ON NEW AND LITTLE KNOWN BRITISH 

 APHIDES. 



By Fred V. Theobald, M.A., F.E.S., &c. 



I. 



The Aphididffi recorded here, which I have found or which 

 have been sent me during the last few years, are either new to 

 the British Fauna, or have not been recorded since the time of 

 their description ; whilst a few are described for the first time. 

 The number of British species is rapidly increasing, and many 

 new species are constantly being found. 



1. Idiopterus nephrolepidis, Davis. — This very marked and 

 pretty aphid was described by Davis in 1909 (Ann. Ent. Soc. 

 Am. ii. p. 198) from ferns in America. Specimens of alate 

 viviparous and apterous viviparous females were sent me by 

 Mr. Gough, of the Board of Agriculture, on August 21st, taken 

 on Polygonums' in a glasshouse near London. Again, on October 

 7th, more apterse were received from another nursery near 

 London. The peculiar veination and the ornamentation of the 

 wings, the marked white spots on the black body of the apterae 

 and the white legs, make it a very conspicuous species. It 

 causes the tender leaves of the ferns to curl up, and is said to 

 be very harmful to ferns under glass in America. Mr. Gough 

 wrote me that one grower told him that this aphid quite 

 blackened the tops of the ferns in his houses, but that it was 

 controlled by the use of insecticides. It is probably an introduced 

 tropical species both here and in America. 



