1 50 Chionaspis. 



CHIONASPIS FLAVA, sp. nov. 

 (Plate LI 1 1.) 



Female puparium {figs. 2, 6, 7) pointed in front, roundly dilated behind ; 

 surface marked with irregular raised lines. Colour, in fresh specimens, bright 

 canary yellow {fig. 6) ; in older examples, brownish ochreous {fig. 2). Pellicles 

 yellowish ; the median area of the second pellicle thin and transparent. Ventral 

 scale rather strongly developed, and persistent towards the margins, where it 

 forms a ragged fringe partially enveloping the insect {fig. 7). Length 3 mm. 

 Breadth 175 mm. 



Male puparium snowy white {fig. 3) ; pellicle yellowish. Form normal ; 

 sides sub-parallel ; strongly tricarinate, the carinse rugose. Length slightly over 

 I mm. 



Adult female bright pale yellow, pygidium reddish. Narrowed in front ; 

 broadest across metathorax and base of abdomen. Segments at first distinct, 

 and laterally protuberant {fig. 5). In older examples the divisions of all but the 

 terminal segments are obliterated, and the dorsal parts (including cephalo 

 thorax and anterior half of first abdominal segment) become smooth and 

 indurated {fig. 4). In macerated examples this chitinous area appears of a 

 darker tint {fig. 8). Antenna {fig. 10) with two short curved bristles on a 

 conicle tubercle. Anterior spiracles with a small group of parastigmatic glands. 

 Lateral margins of all three abdominal segments with large groups of stout 

 spiniform squames. Pygidium {fig. 9) with a deep median cleft containing the 

 median lobes, which are elongate, diverging and serrate on the free edge. 

 Second and third lobes prominent, duplex, each lobule constricted at base. 

 Squames spiniform, one on each of first to fourth spaces and two on base. No 

 circumgenital glands. Dorsal pores numerous and conspicuous, arranged in 

 irregular series over the second, third, fourth, and basal spaces. An interrupted 

 series on the third abdominal segment, and a few pores on the second. Anal 

 and genital apertures at same level. Length 2 mm. Breadth i mm. 



Adult male bright red ; of usual form. Terminal joint of antenna with two 

 very fine knobbed hairs on one side and a stouter one at apex. Foot with four 

 digitules. Total length, including genital sheath, 075 mm. 



The young larvae discard the t%% skin at the time of their extrusion from the 

 body of the parent insect. 



Habitat upon under surface of leaves of Aniidesma bunius ; Pudaluoya. 

 The male puparia are collected into large groups. The position of the insect is 

 marked by a yellow discolouration of the tissues of the leaf. 



This species approaches Ch. citri, Comst., in the hardening of the anterior 

 parts of the body, and in the absence of the circumgenital glands, but differs in 

 the character of the median lobes, those of citri being prominent. 



It is remarkable that both of the two species of Chionaspis, viz., permutans 

 and Jiava, affecting Antidesma, have this characteristic induration of the 



