ASPIDIOTUS BRITANNtCUS. 117 



ASPIDIOTUS BEITANNICUS (Newstead). 

 (PL VIII, figs. 812; PL VII, fig. 3; PL XII, fig. 4.) 



Axpidiotus hederge, Newstead ; Ent. Mo. Mag., S.8., 



p. 279, 1896; nee Vallot. 

 Aspidiotus britannicus, Newstead; Ent. Mo. Mag., 



S.S., vol. ix, p. 93, 1898. 

 Evaspidiotus britannicus (Newstead), Leonard! ; Gen. 



e sp. di Diaspiti. Est. dal. Eivista di Patologia 



Vegetale, 1897 [VI], 1900 [VIII], p. 223. 



Puparium of the adult female (PL VIII, figs. 8, 12), 

 circular or approximately so ; moderately convex. 

 Colour dusky ochreous, with a broad, smoky brown 

 central zone. Exuviae central, or a little to one side ; 

 those of the larvae dark yellow, or dull orange yellow ; 

 secretionary covering very thin, does not obscure 

 either form or colour of the exuvia3. Second secre- 

 tionary covering, smoky brown, entirely covers the 

 exuviae. Ventral scale very thin, remains attached to 

 the leaf. The scales very readily fall from the food- 

 plant on the slightest disturbance of the contour of the 

 leaf. 



Diam. 1*75 2 mm. 



Puparium of the female second stage (PL VIII, 

 fig. 9), on underside of leaf, fulvous, with the larval 

 exuviae bright ochreous yellow, margins darker. In 

 exposed situations on the leaves or branches the puparia 

 are smoky brown with orange -ochreous exuviae. 



Adult female (PL VIII, tig, 10) translucent yellow; 

 short ovate ; with the segmentation very distinct ; the 

 pygidium well defined and produced. 



Pygidium (PL VII, fig. 3) with four or five groups 

 of circumgenital glands ; the anterior group, rarely 

 present, consists of 2 to 3 ; the anterior laterals from 

 7 to 10 ; the posterior laterals 7 to 8 ; the lateral 

 groups in a narrow, more or less continuous series. 



