Chionaspis. 149 



CHIONASPIS MEGALOBA, sp. nov. 

 (Plate LI I.) 



Female puparidm {^fig. 3) whitish or very pale ochreous ; semi-opaque ; the 

 surface with numerous hairs detached from the leaf. Pellicles pale yellow. 

 Moderately convex. Form oblong, widened and rounded behind. Ventral 

 scale very thin, remaining adherent to the leaf. Length i"25 mm. Breadth 

 o'8o mm. 



Male puparium {fig. 2) opaque white; conspicuously tricarinate ; rather 

 broad, widened behind. Length i mm. Breadth o"5o mm. 



Adult female {fig. 4) abruptly narrowed in front, broadly rounded behind : 

 abdominal segments broadest. Colour of dried insect brownish ; living insect 

 probably yellow. Spiracles each with a small group of parastigmatic glands. 

 Second and third abdominal segments with a few spiniform squames on margin. 

 Pygidium {fig. 5) broad, deeply incised at extremity ; the sides of the cleft 

 occupied by the very large and conspicuous median lobes, their bases united, 

 their free edges minutely serrate, their distal extremity scarcely projecting 

 beyond the margin. Second and third lobes minute, duplex, each lobule with 

 simple rounded extremity. Squames rather stout; one on each of first to fourth 

 spaces (that on first space very small), and a group of three on base. The 

 marginal dorsal spines are unusually large and conspicuous, being almost as 

 long as the squames. Dorsal pores well developed ; a series on each of third, 

 fourth, and basal spaces, and another on third abdominal segment. (In 

 examples from Actinodaphne there are no dorsal pores on the third space.) 

 Circumgenital glands with numerous orifices : median, 12 to 16 ; upper laterals, 

 28 to 34 ; lower laterals, 18 to 24. Anal anterior to genital aperture. Length 

 0*50 to o"6o mm. Breadth about 0*40 mm. 



Adult male unknown. 



Habitat on leaves of Psidiwit (?) sp. Collected by Mr. A. Koebele at Kandy 

 (January). I have also taken examples of what appears to be the same species 

 on plants of Actinodaphne molochina growing on the summit of Pedrotalagala, 

 Nuwara Eliya, at an elevation of over 8000 feet. 



EXPLANATION OF PLATE LII. 



Chionaspis megaloba. 

 {Allfigttres, except No. i, more or less enlarged.) 



Fig. I. Leaf, with insects in situ, nat. size. 



2. Male puparium. 



3. Female puparium. 



4. Adult female. 



5- „ » pygidium. 



