1900.] 125 



SUPPLEMENTARY NOTES on LITHOCOLLETIS PYRIVORELLA, Bnks. 

 BY EUSTACE K. BA.NKES, M.A., F.E.S. 



I am now breeding LHTiocolletis pi/rivorella from under-side mines 

 on leaves of wild apple, cultivated apple, and cultivated pear trees, 

 collected at Salisbury, October 25th — November 21st last. The species 

 has not previously been recorded from the county of Wilts. The 

 mines on cultivated apple, on which the larva has never before, to my 

 knowledge, been found, and on cultivated pear, occurred not uncom- 

 monly in our garden in the Close, there being no wild pear or apple 

 anywhere near, while those on wild apple were found in hedgerows 

 far away from any gardens. On one small wild apple bush nearly 

 every leaf contained a mine of pyrivorella, but by November 2l8t 

 the birds had ialready pecked holes from the upper-sides of the leaves 

 into many of the mines, and devoured the owners. 



In my original notice of pyrivorella I stated (Ent. Mo. Mag., 

 Ser. 2, X, 253) that I had no note about the cocoon : this now proves 

 to be distinct, and small, spun of white silk, inside the mine of course, 

 and towards one end of it. 



In my description of the imago (op. cit. p. 252) the thorax and 

 tegulae were described as " striped with white." This phrase requires 

 further explanation. There is no white stripe down the middle of the 

 thorax, which, however, often shows a median white spot, or dash, 

 posteriorly, but a horseshoe-shaped white line curves from its apex, 

 which lies just behind the middle of the head, down on each side 

 across the anterior part of the thorax and across the tegula : when the 

 insect is at rest, the white basal streaks on the fore-wings appear as 

 prolongations of the two sides of the horseshoe. While on the subject 

 of the imaginal markings, it may be as well to record an interesting 

 aberration that occurred in a series of about 300 specimens, bred in 

 April, 1890, from mines collected on pear trees in Corfe Castle Rectory 

 garden. The individual, which is a female, has, on each fore-wing, 

 the first and second dorsal white teeth united so as to form an arch : 

 in addition to this, the first and second costal teeth, on the right 

 fore-wing only, unite into a white blotch along the costal margin. 



L. pyrivorella is exceptionally constant in size, colour, and mark- 

 ings, no matter from what food-plant it is bred, and owing to the 

 difference in size and the very marked difference in colour, there is no 

 fear of its being confused with mespilella, Hb., to which it is closely 

 allied. My friend. Dr. Wood, has found that there are no tangible 



