Diaspis. 9 1 



DIASPIS FAGR/E^ sp. iiov. 

 (Plate XXV.) 



Female puparium {figs. 2, 3, and 6) irregularly circular or slightly oblong, 

 convex. Colour normally opaque white with fine concentric lines of growth, 

 but older specimens become stained with greyish brown. The reddish pellicles 

 are situated either subcentrally {fig. 2) or to one side {fig. 3)— the latter position 

 being the more frequent ; the hinder parts of the first pellicle are obscured by 

 a layer of secretion. Ventral scale represented by a whitish film which remains 

 attached to the plant. Length averaging 2 mm. Breadth i'25 to 175 mm. 



Male puparium {figs. 4 and 5) oblong ; white, with yellowish pellicle at 

 anterior extremity; no trace of carination. Ventral scale very thin and delicate, 

 remaining attached to the plant. Length i mm. 



Adult female {fig. 7) broadly rounded in front and tapering to a blunt point 

 behind ; segments well defined, with lateral margins produced into rounded 

 lobes. Colour reddish. Antennas {fig. 8) rather close together, each con- 

 sisting of a stout, curved hair on an irregular tubercle. Anterior spiracles each 

 surrounded by a large cluster of parastigmatic glands {fig. 9), which are 

 indicated in the living insect by white, waxy patches. Pygidium {fig. 10) with 

 a pair of oblique, rounded, median lobes sunk into the margin, their bases 

 confluent, their free margins minutely crenulate ; followed closely on each side 

 by a small but prominent duplex lobe, and crenulate marginal prominences at 

 intervals. Squames tapering and spine-like, one in each of the first and second 

 spaces, two in each of the third and fourth spaces, and a group of about six at 

 the base. Each of the three preceding segments has a marginal group of 

 similar spine-like squames. The circumgenital glands are in five groups, of 

 which the median contains from eight to ten orifices, the upper laterals from 

 fifteen to eighteen, and the lower laterals from twenty to thirty, the lower 

 groups in every case containing the greater number. The tubular spinnerets 

 are short and cylindrical, a few opening on to the margin, and others opening, 

 by conspicuous oval pores arranged in definite curved series, on the dorsal 

 surface ; there are two of these series on each side of the pygidium and one 

 on each of the two preceding abdominal segments, and there are three or 

 four similar pores on each side, close to the circumgenital glands. There are 

 other very delicate filiform ducts communicating with the marginal squames. 

 The genital aperture is between the lower gland groups, and the anal aperture 

 slightly anterior. Length i to no mm. Breadth o'8o to i mm. 



Adult male of normal form and reddish colour. Terminal joint of antennas 

 equal to 9th, and bearing a single knobbed hair at apex {fig. 12). Foot {fig. 11) 

 wiih three knobbed hairs (one on claw and two on tarsus) ; claw proportionately 

 shorter and stouter than in D. amygdalij tarsus considerably shorter than 



