128 Chionaspis, 



CHIONASPIS MINUTA, Gree^t. 



(Plate XLI.) 



Chionaspis minuta, Green, 'Catalogue of Coccidce,' hid. Mus. Notes, Vol. IV., 



No. I, p. 3 (1896). 



Female puparium colourless, transparent, showing the yellow body of the 

 insect and the eggs below {Jigs. 2, 3). Pellicles very pale yellow, almost com- 

 pletely surrounded by the secretionary area. Form very irregular ; the margin 

 unevenly lobed, as is often the case with puparia formed upon hairy leaves. 

 Length averaging rather less than i mm. Breadth about 0*50 mm. 



Male puparium {Jigs. 4, 5) also colourless and transparent (a very unusual 

 character in the genus); of the usual elongate form, with sub-parallel sides; 

 obscurely carinate. Pellicle colourless, except at posterior extremity, where it 

 is tinged with yellow. Length 075 mm. 



Adult female pale yellow, with minute blackish eye-spots. At first elongate, 

 broadest across mesothorax {Jig. 11). After oviposition becoming greatly con- 

 tracted and of irregular outline {Jig. 12). Anterior spiracles with a small group 

 of parastigmatic glands. Abdominal segments without marginal squames or 

 pores. Pygidium {Jig. 13) with a median longitudinal rounded ridge from anal 

 orifice to extremity. Median and first lateral lobes projecting, but very minute 

 and inconspicuous. Other lobes obsolete. Squames strongly developed, 

 spiniform ; one on each of first to fourth spaces, and a group of four to five on 

 base, all of about equal size. Marginal pores on second, third, and fourth 

 spaces, none on base. Dorsal series reduced to a single pore on fourth and 

 basal spaces. Circumgenital glands in five groups : median 4 to 6 ; upper 

 laterals 9 to 12 ; lower laterals 8. Anal considerably anterior to genital 

 aperture. Length of extended insect averaging o"40 mm. 



Adult male {Jig. 6) pale yellow. Wings rather narrow. Antenna {Jig. 7) 

 with long fine hairs, and a single knobbed hair at extremity. Foot {Jig. 8) with 

 three digitules, one ungual and two tarsal. Length (including genital sheath) 

 o"30 mm. 



Eggs relatively very large, the long diameter being equal to breadth of the 

 pygidium of the female {Jig. 10). 



Newly hatched larva {Jig. 9) pale yellowish ; rostrum approximately central ; 

 caudal setae very long. 



Habitat on under surface of leaves of Tetra7ithera sp. {Jig. i). Pundaluoya. 



The scales occur in immense numbers on the leaves, but, from their minute 

 size, are very inconspicuous. Their presence may be recognised by a yellowish 

 discolouration of the leaf. This is by far the smallest species of Chio?iaspis at 

 present known. 



