Lecmmnce, 225 



LECANIUM PSIDII, sp. nov. 

 (Plate LXXXII.) 



Adult 9 {Jig. I ) bright red-bi-own to deep brown ; living insects usually 

 smooth, shining' ; dried examples often more or less pitted and corrugated. 

 The paler examples often with darker bars projecting inwards from the margin, 

 but not meeting in the centre. Oval ; highly convex ; sometimes narrowed in 

 front ; margin pitted, and slightly out-turned {fig. lo). Antenna {fig. 9) 

 normally with seven joints ; seventh and fourth longest. Formula : (4, 7), (2, 3), i 

 (5, 6), or 4 (2, 3, 7), I (5, 6) ; sometimes becoming eight-jointed by elongation 

 and subdivision of third joint {fig. 8). Legs (yff. 7) rather small, tarsus only 

 slightly shorter than tibia. Stigmatic spines three, the median one scarcely longer 

 than the marginal hairs {fig. 9), the other two less than half as long. Marginal 

 hairs dilated and finely frayed at the extremity. Submarginal tubercles four or 

 five on each side. Scalesof anal operculum {fig- 6) bluntly pointed, base twice as 

 long as outer edge. Anal ring with eight stout hairs. Derm with numerous 

 minute oval pores, which are arranged more or less in lines inclosing irregular 

 blank spaces. Size very vari.able. Length 250 to 375 mm. Breadth 2 to 

 3 mm. 



Female of second stage {fig. 4) and early adult pale green or yellow, with a 

 median longitudinal series of deep reddish-brown spots, and a submarginal 

 series of dark brown lines and spots, the former extending to the margin. 



Adult 6 {fig. 2) pale reddish ; apodema darker. Legs and antennre 

 yellowish. Wings hyahne ; costal nervure very pale pink. No caudal fila- 

 ments, but a small fleshy tubercle, surmounted by a few hairs, on each side of 

 the genital sheath {fig. 5). Genital sheath three-quarters length of abdomen, 

 moderately stout. Antennae as long as body ; three knobbed hairs at extremity. 

 Eyes and ocelli black. Length i mm. 



Male puparium {fig. 3) colourless, transparent, glassy, divided into nine 

 plates, with an indistinct median tubercular ridge. Length I'so mm. 



Pupa green, turning reddish shortly before the emergence of the imago. 



Habitat on under surface of leaves of ' guava ' {Psidiiim gityava), on Magni- 

 fera indica, 'jak' {Artocarpus i?itegrifolia\ Eugetiia sp., FagrcBa, and on the 

 young shoots of the cultivated nutmeg {Myristica moschatd). Kandy, Perade- 

 niya, Colombo, Balangoda (December, January). Always attended by ants. The 

 large ' red ant ' {CEcophylla smaragdina) often encloses colonies of this bug 

 in its nests. 



