2 1 6 Lecaniince. 



LECANIUM MANGIFERyE, Green. 



(Plate LXXVII.) 



Lecanium iiiangifercB, Green, Eniomologisfs Monthly Magazine, 

 April, 1889, p. 249. 



Adult 9 {figs. I, 4, 5), pale yellowish green, the malpighian tubules showing 

 through the skin of the dorsum as an indistinct chain of oblong fulvous spots. 

 Deltoid, bluntly pointed in front, broadly rounded behind, usually asymmetrical. 

 Very thin ; margin broadly flattened, with slight ridges above the stigmatic 

 areas, and some conspicuous translucent lines marking the obliterated junctions 

 of the abdominal segments. Median dorsal area smooth and very slightly 

 convex in fully mature examples. Eyes marginal, minute, black. Anal cleft 

 more than one-third total length of the insect. In some examples the anal 

 aperture is approximately central. Scales of anal operculum {fig. 6) narrowly 

 triangular, elongate ; inner edge longest, more than twice length of outer edge ; 

 outer edge shortest ; base twice length of outer edge. On the ventral abdo- 

 minal area is a broad cavity in which the eggs are retained after deposition (Jig. 5). 

 Antenna {fig. 11) with eight joints; second and eighth equal and longest, 

 seventh always shortest. Legs well developed ; tarsus more than half length 

 of tibia. Foot {fig. 10) with four digitules ; the tarsals in the form of knobbed 

 hairs ; the unguals broad and spatulate, twice length of claw. Margin closely 

 set with curved hairs, the extremities of which are divided into from three to four 

 points {fig. 9). Submarginal tubercles five on each side. Stigmatic clefts with 

 three stout spines, the middle one long and curved, the other two very short, 

 straight, and bluntly rounded at extremity {fig. 8). Anal ring with eight hairs, 

 six of which are long and stout, and two quite short and slender. Derm with 

 numerous well-defined small oval or round pores, narrowly surrounded by a 

 darker zone {figs. 6, 7). Length 3 to 4 mm. Breadth 2'50 to 3'50 mm. 



Adult <!, unknown. 



Egg, pale green. 



Young larva {fig. 2) very pale yellowish-green ; broadly oval. Eyes dull 

 red. Anal setse half as long as body, springing from the points of the anal 

 scales {fig. 3). Marginal hairs curved, simple. 



Half-grown female very thin and transparent, similar in outline to adult. 



Habitat on under surface of leaves of mango and Litsea zeylanica. Punda- 

 luoya. Recorded also from the West Indies on orchids, cinnamon, and 

 Jambosa. Reported also from the West Indies. 



Mr. J. W. Douglas, in a note to the original description, points out the 

 resemblance of this insect to Lecanium acuminatum of Signoret. But besides 

 the discrepancy in the number of antennal joints, the present species (if 

 Signoret's figure is reliable, Essai sur les Cochenilles, 1873, PI. 12, fig. i) has 

 the anal cleft much longer, and consequently the anal scales situated much 

 nearer the centre. 



