1920.] 



121 



Pseudococcus maritimus Ehrhorn. 



Tliis species, hitherto unrecognized in the British Isles, has been 

 found (in some abundance) in a conservatory at Camberle}'', where it 

 was infesting a plant of the ivy-leaved Geranium. The insect bears a 

 very close resemblance to Ps. longispinus, from which it may be dis- 

 tinguished by the much shorter waxy tassels on the sides of the bod}-^? 

 the caudal tassels alone being greatly elongated (see fig. 4, «). There 





Fig. 4. — Pseudococcus maritimus. a, adixlt 2, X 15 ; b, antenna and frons, X 130 ; 

 c, mid-leg, X 80 ; d, anal lobe, X 220 : e, ceriferous tract, from frons, 



X 450 ; /, ditto, from anal lobe, X 450 ; g, sockets of spines of ceriferous 

 tracts 1-3, X 450 ; h, ditto, 4-15, X 450 ; i, ditto, 16, X 450 ; j, ditto, 17, 



X 450. 



are 17 ceriferous tracts on each side of the body ; the first three ti-acts 

 bearing three spines apiece ; the remainder with two spines only. The 

 spines of the first fifteen cerarii are small (fig. 4, e) and of approxi- 

 mately the same size ; those of the sixteenth pair are larger ; while the 



M 



