THE CANADIAN ENTOMOLOGIST. 



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5, 2, I (3, 4). (Fig. 21.) A pair of well-developed lobes notched on the 

 outer side ; two very long hairs and two short spines between the lobes. 



Collected by the author on the under side of leaves of Quercus 

 densiflora in Mendocino County, California. 



Aspidiotus yidiipa, n. sp. — (Fig. 22.) Puparium of female round and 

 quite convex. Black in colour, but often appearing gray when partly^ or in 

 some cases completely, covered by the epidermal tissues. Exuvipe are in 

 the centre of the scale, and are pink in colour, with a grayish central spot. 

 Length of largest specimens, i mm. The males are not distinguishable 

 from the females, having the same colour and form. 



Ijcngth of scale on slide, .64 mm.; width, .46 mm. One pair of 



Fig. 22. — .\spidiotiis yulupa;. 



well-developed lobes, with a deep notch on the outer side ; second and 

 third pairs of lobes rudimental, and showing no indications of chitin after 

 boiling in K. O. H.; second with a groove on the outer side, and third 

 with a groove in centre. Very few plates, a short curved one and a large 

 one with four teeth between the first and second lobes ; a long plate with 

 branched end and a stout one with three teeth between the second and 

 tliird lobes. Marginal spines quite prominent. One at the outer base of 

 first lobe ; one at the centre and one at the base, just below the notch of 

 second lobe ; one at centre, and just below the groove of the third lobe ; 

 one pair of spines near the middle of the segment, and one pair near the 

 cephalic margin. Dorsal pores prominent, but not numerous. There are 

 no groups of circumgenital gland orifices ; anal orifice small and remote 

 from the margin. 



