260 Pulvinaria. 
PULVINARIA TESSELLATA, Green. 
(PLATE XCVIILI.) 
Pulu. tessellata, Green, ‘ Catalogue of Coccide, Jd. Mus. Notes, Vol. 1V. 
No. 1. p. 8 (1896). 
Adult female (figs. 1, 2) bright pale green, flattish, slightly concave above 
after gestation; median area of dorsum distinctly marked with irregular 
polygonal divisions, which disappear after treatment with potash. Anal 
operculum (fig. 7) very long and narrow, fully one-fifth the total length of 
the insect ; distant from posterior margin by about its own length; base more 
than four times the length of outer edge ; inner edge five times the length of 
the outer. Anal ring at about middle of operculum. Eyes minute, black, 
marginal. Antenne normally eight-jointed (jig. 3), but in one example the 
fourth and fifth joints are confluent and without sign of division (fg. 4) ; 
formula : (3, 8), 2 (4, 5), 1 (6, 7); or (3, 7), 4, 2 (1, 6), 53 the third and terminal 
joint always equal and longest. Legs rather slender ; digitules normal (fg. 6), 
the unguals spatulate. Tarsus rather more than half length of tibia. Stigmatic 
spines (ig. 5) three, small, the median one more than twice length of the others. 
Marginal hairs simple, very small. Derm without conspicuous cells, except 
occasionally on the denser chitinous area, where they may appear as round 
translucent spots, widely separate. Ovisac white, longitudinally fluted and trans- 
versely corrugated. Length of insect 2 to 225 mm. Breadth 1°50 to 1°75 mm. 
Total length, with ovisac, 2°75 to 3°75 mm. 
Male puparium (fg. 8) oblong oval, glassy, colourless; surface minutely 
wrinkled and roughened ; a slight median ridge bearing five or six small raised 
points. Scale divided into nine plates, the two median plates with marginal 
series of minute raised points. Length 2 mm. 
Adult male (jig. 9) reddish ; apodema dark brown. Wings ample, iridescent ; 
costal nervure pale pink. Head (figs. 12, 13) flattened in front and behind ; 
pointed above, pubescent. Ocelli four, black. Eyes two, minute, blackish. 
Sides of head with a dark line marking contour of gene. Antennz (7g. 10) 
ten-jointed ; terminal joint (7g. 11) with three knobbed hairs. Legs very long 
and slender, hairy. ‘Tarsus less than half length of tibia; foot (ig. 14), with 
fine knobbed digitules. Abdomen terminating in a longish, stout, genital sheath 
(fig. 15), on each side of which is a white thread-like filament, as long as, or 
longer than, the body of the insect; lateral margin of penultimate segment 
produced into a long finger-like lobe. Total length, including genital sheath, 
125 mm. 
On under surface of leaves of Ophiorrhiza pectinata, Pundaluoya (October). 
On Strobilanthes, Nuwera Eliya, and on undetermined plant, Vatiyantota 
(November). 
The form of the anal operculum sufficiently distinguishes this from other 
species of Pulvinaria. In this character it approaches the genus Pseudo- 
pulvinaria, 
