Galls caused by the queen and nymphs of Schizoneura 

 lanigera Haus. 



ou 



a branch of Pyrus Malus Linn. 

 PLATE So. 



Synonymy of Insect. 



Aphis lanigera Haus., Ger., Kirby and Spence. 

 Eriosoma viali Leach, Mosley, Haliday. 



„ lanigera Fitch. 

 Schizoneura la?iigera Htg., Kalt., Pass. 

 Myzoxylus niali Blot., Tong., Amyot. 



Habitat of the Apple-tree.— Grows in orchards and 

 gardens throughout the length and breadth of the country. 



The Gai.l is formed by the exudation of sap resulting from 

 the continuous punctures of the rostra of the aphides. 



Position.— On the trunk, branches, and twigs. 



Manner of Growth. — Rounded protuberances with rugose 

 surface. 



Colour.— Brownish, with grey spots and patches. 



Average Dimensions of a Mature Specimen. 

 Girth, 7 in. 



May be sought during any month in the year. 



Particulars of Plate. — Length of bough, 20 in. ; length of 

 lower twig, 5^ in. ; length of centre twig, 7 in. ; length of 

 excrescence on left hand, 4 in. ; girth of unaffected portion 

 of branch, midway between lower twig and centre twig, 

 90 mm. ; girth of galled portion of branch, midway between 

 lower twig and centre twig, 160 mm. ; girth of excrescence 

 on left hand at greatest circumference, 156 mm. 



The gall is also figured by Miss Ormerod, " Injurious Insects," 

 1890, p. 279, "Insects Injurious to Orchard and Bush Fruits," 

 1898, p. i; and also Buckton, "British Aphides," vol. iii., 

 plate 106. 



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