BR. J. ENT. NAI. HIST., 7: 1994 



Porter, J. — Pieris napi L. ab. obsolete! Robcr (lacking dark markings) and a dark 

 female from the Scottish Highlands. Inachis io L. ab. brunnea Reuss bred from a 

 brood of 100 adults. A good L. Camilla ab. nigrina. 



Plebejus argus L. from five different colonies including the chalk soil of Portland, 

 Dorset (pale undersides and thin black borders on the upperside of the males). Great 

 Orme, North Wales (the famous ssp. caernensis Thompson) and from heathland, 

 including an intersex, ab. inaequalis Cockayne — a female insect with strong blue scaling 

 on the right wings. A female Pyronia tithonus L. ab. crassiexcessa Leeds. 

 Coenonympha tullia Mull. ssp. scotica Staud abs pallida Osthelder and obsoleta Tutt 

 (entirely lacking spots). Two female Polyommatus icarus Rott, one an extreme ab. 

 coerulea Fuchs from the North Downs, the other a Scottish female example with bright 

 whitish-blue hindwing margins. 



Revels, R. C. — (1) A female example of Pararge aegeria ab. saturatior Cromb. 

 from Herts., 1993, lacking pale markings on the hindwings and reduced on the 

 forewings. A very remarkable male Colias croceus Geoff, aberration bred by a 

 colleague from purchased pupae. The right forewing is completely melanic on both 

 surfaces (but with the original pattern visible) and the upper third of the right hindwing 

 is melanic on the underside only (figured in Bull. A mat. Entomologists' Soc. 1993; 

 52: pl.T). A male P. icarus ab. radiata Courv. bred in the F 2 from a similar original 

 parent. Little else of note has appeared in the strain up to an F 3 of 150+ insects. 



(2) A very impressive breeding experiment with Polyommatus icarus from an original 

 parent ab. discoelongata B.&.L. taken viii.1992 from a locality where ab. radiata 

 has occurred. The F, of 40 insects was mostly typical although a few specimens were 

 discoelongata on the forewings, and, in one male example, on all wings. This male 

 was paired with a discoelongata female producing an F 2 of 24 males and 26 females 

 in vii/viii.1993; 5 males and 9 females were radiata on all wings and another 5 of 

 each sex were transitional forms. The remainder of the brood was typical or nearly 

 so. Pairings between radiata adults produced an F 3 of 91 insects in ix. 1993. This 

 contained a graded range of aberrations from type (3 of each sex), through transitional 

 forms (20 insects) to full radiata (Plate I, Fig. 3) (30 males and 35 females). Ova 

 have been obtained to continue the strain. 



Breeding over many years by L. D. Young has shown that discoelongata is inherited 

 as a multifactorial/polygenic form and when inbred can produce radiata. The present 

 strain required many fewer generations to produce full radiata, and continued 

 inbreeding by the exhibitor will hopefully indicate whether a different gene system 

 is in operation. 



(3) F, and F 2 broods from an extreme aberration of Pyronia tithonus L. with very 

 broad forewing borders and lacking the hindwing fulvous. This experiment has show n 

 this to be a dominant form with a weakening effect on the insects. This aberration 

 was figured in Proc. Trans. Br. Ent. Nat. Hist. Soc. 1985; 18: Plate 1. 



Robertson, T. S.— An unusual form of Aglais urticae L. Finchampstead, Berks.. 

 24.viii.1993, with the basal two forewing costal black markings joined. Usually in 

 aberrant urticae it is the sub-basal and distal costal markings that coalesce . 



Rook, S. J.— Two aberrations of Lysandra coridon Poda from Dorset in 1993. 

 One was ab. discreta-postradiata B.&L. (Plate I, Fig. 1), the second a female with 

 strong blue scaling on the upperside of all wings, bearing similarities to ab. 

 semisyngrapha Tutt. 



Russwurm, A. D. A. & Middleton, H. G. M.— A female Maniola jurtina L. 

 with very bright markings and an enlarged apical spot, having the appearance 

 of an extreme form of ssp. cassiteridum Graves (Scilly Isles), from Boldre, Hants. 

 3.viii.l993. 



