Lecaniince . 193 



LECANIUM OPHIORRHIZyE, Green. 



(Plate LXVI.) 



Lee. opMorrhiza, Green, ' Catalogue of Coccidns,' Ind. Miis. Notes, Vol. IV. 



No. I (1896). 



Adult ? {Jig. 12) irregularly oblong oval, slightly acuminate in front; 

 widest across the median area at about the level of the second stigmatic clefts ; 

 moderately convex above, with more or less well-defined median and stigmatic 

 ridges. In older examples the ridges are less prominent. Colour olivaceous 

 fulvous ; the whole dorsal surface symmetrically reticulated with dark lines 

 composed of reddish-brown spots, the spots confluent on the median and 

 stigmatic ridges. The reticulation disappears after treatment with potash, but 

 the submarginal area is then seen to be finely-marked with delicate radiating 

 lines of stricE (Jig. 17), these striae appearing under a high magnification as 

 aggregations of minute dark specks [Jig. 18) embedded in the substance of the 

 derm. The striation is most marked in specimens that have been dried 

 before preparation. Stigmatic clefts conspicuously marked by opaque white 

 mealy tufts. Stigmatic spines (Jig. 16) three, slender, pointed : the median 

 one more than twice as long as the other two. Marginal hairs simple, pointed, 

 small, rather distant except on the posterior margin. Submarginal tubercles, 

 four on each side. Eyes situated close to the margin ; black in the living 

 insect ; inconspicuous in dried samples ; appearing, after preparation, as small, 

 colourless, semi-opaque, globular bodies just within the margin. Antennse 

 (Jig. 14) with eight joints, of which the 3rd is always the longest, equalling 

 the fifth and sixth together ; sixth and seventh equal, shortest : formula 3 (2, 4, 8), 

 5, I (6, 7). No hairs on third and fourth joints. Legs moderately large : tarsus 

 three-quarter length of tibia : ungual digitules broadly spatulate, twice length 

 of claw : tarsal digitules slender knobbed hairs (Jig. 15). Scales of anal oper- 

 culum (Jig. 13) reddish, triangular, pointed ; base straight or slightly concave, 

 shorter than outer edge, which is slightly convex. Anal cleft about one- 

 quarter total length of insect. Anal ring situated considerably anterior to 

 base of anal scales, bearing six long, stout, pointed hairs. Length 2*50 to 

 3 mm. Breadth i'25 mm. 



Female of second stage, with inconspicuous reticulations. 



Adult 6 (Jig. i) bright castaneous ; apodema dark brown. Wings ample, 

 iridescent, with pale pink costal nervure. Legs and antennas yellowish. 

 Extremity of abdomen with a pair of thin opaque white caudal filaments, not 

 as long as the body. Antenna (Jig. 4) shorter than body : ten-jointed, fourth 

 longest, tenth with three knobbed hairs at extremity and several stout curved 

 spines besides the usual short hairs (Jig. 8). Foot with four knobbed hairs 

 (yfg". 7). Genital sheath (Jig. 8) moderately long and stout. A small blunt 

 tubercle on each side of terminal segment of abdomen. 



