140 Chionaspis, 



CHIONASPIS VITIS, Green. 



(Plate XLVII.) 



Chionaspis vitis. Green. 'Catalogue of Coccidae,' Ind. Mies. Notes, Vol. IV., 



No. I, p. 3 (1896). 



Female puparium {Jig. 3) white, thin, and semi-transparent ; occupied scales 

 indistinctly showing the colour of the insect and eggs beneath {fig. 2). Pellicles 

 pale fulvous, the first very small, usually only one-third length of second. 

 Secretionary area very irregular in outline, usually broadly rounded or deltoid, 

 breadth about equal to length, rarely elongate. Length 2'5o mm. Breadth 

 2"5o mm. 



Male puparium {Jig. 9) snowy white ; elongate, narrow ; distinctly tricarinate, 

 the carinas smooth and regular ; sides almost parallel, the hinder extremity 

 slightly wider. Pellicle about one-fifth total length of scale. Length i mm. 



Figs. 7, 8, and 9 represent different stages in the development of the male 

 scale. A median dorsal and a lateral line of waxy matter first appear on the 

 body of the insect, after the first moult {Jig. 7). These coalesce by lateral 

 growth {Jig. 8), the subsequent extension being entirely longitudinal. 



Adult female at first bright yellow {Jig. 4) ; afterwards the median area of 

 the body becomes deeply tinged with reddish brown by the accumulation of 

 ova within the body {Jig. 5), the form of each individual egg being plainly 

 visible. Eye-spots blackish, well defined and conspicuous, situated on prominent 

 marginal papillae. Body broadest across mesothorax. Abdominal segments 

 distinct and deeply divided, the margins with groups of pores and very small 

 tubular processes {Jig. 6). Antenna consisting of the usual tubercle and stout 

 curved bristle. Mouth parts rather large. Anterior spiracles with a small but 

 crowded group of parastigmatic glands. Pygidium {Jig. 6) with small but dis- 

 tinct median and lateral lobes, all crowded upon the extremity ; median lobes 

 diverging, bluntly pointed ; the two lateral lobes duplex, each lobule bluntly 

 pointed. Squames rather small, especially near the extremity ; one on each 

 of first to fourth spaces, and four or five on base. Marginal pores normal. 

 Dorsal series consisting of a single oval pore on third space, an interrupted 

 series on fourth and basal spaces, and a series on third abdominal segment. 

 Circumgenital glands in five groups : median 15 to 25 ; upper laterals 18 to 37 ; 

 lower laterals 14 to 22 ; the upper lateral groups always largest. Anal at same 

 level as or slightly below genital aperture. Length of fully extended example 

 i'25 mm. Greatest breadth about o"82 mm. 



Adult male {Jig. 10) bright reddish orange, legs pale. Ocelli large and black. 

 A distinct blackish spot on gena^, representing the rudimentary eye. Antenna 

 not quite as long as body ; terminal joint as long as penultimate ; a single 

 knobbed hair at apex, and a small sub-apical tubercle bearing two small bristles 

 iJ^^' 13)' Foot {fig. 11) with three digitules (one ungual projecting beyond 



