374 



ROBERT NEWSTEAD. 



Aspidiotus (? Chrysomphalus) mauritianus, sp. nov. 



Female piiparium (fig. 24, a). Subcircular ; anterior extremity very slightly pro- 

 duced ; posterior extremity strongly uptilted by the ventral pellicle, which is 

 markedly thickened and tongue-shaped, but does not project beyond the dorsal 

 pellicle ; the thickened portion rests upon a thiimer pellicle of secretionary matter, 

 so that when examined in profile the puparium resembles the partly open bivalve 

 shell of a mollusc with the " foot " showing between the valves. Larval pellicle 

 subcentral, very prominent, and somewhat hemispherical. Colour bright yellowish- 

 buff or reddish-buff, with generally distinct concentric bands of a darker colour. 



Length, 0-8-1 mm. 



Female, adult (fig. 24, b). Broadly pyriformj free abdominal segments tuber- 

 culate at the margins, the tubercles finely but sparsely setose and glandular. Frons 

 sparsely spinose. Rudimentary antemiae with five hairs, two of which are much 

 thicker and longer than the rest and also strongly curved over the tips of the short 



,«^ 



"M'MMF 



Fig. 24. Aspidiotus mauritianus, Newst., sp. n., $ ; a, puparium ; 

 b, adult ; c, fringe of pygidium ; d, pygidium of larva. 



hairs. Anterior stigmata with five to six glands, arranged in line, the innermost one 

 considerably beyond the proximal end of the stigmata. Pygidium sparsely spinose ; 

 lower portion strongly chitinised, and finely striated vertically ; fringe (fig. 24, c) 

 with three pairs of well developed lobes ; between each lobe a pair of tubular-shaped 

 squamae, the tips, in well stained specimens, ajjpearing as if obliquely truncated ; 

 margin beyond the third lobe with thin, u'regular, dentate plates. Anal orifice just 

 above the chitinous portion. No circumgenital glands. 



Length, 0*5-0 -65 mm. 



Male ficparnim. Larger than that of the female and strongly produced posteriorly ; 

 pellicle subcentral and very prominent ; colour as in that of the female, but with no 

 zonal bands. 



Length, 1-1 -1 mm, , 



