148 E^'iococcince, 



ERIOCOCCUS ARAUCARI^, Maskell. 

 (Plate CXXXIII.) 



Eriococcus armicarice. Mask., N.Z. Trans. ^ Vol. XI. p. 218 (1878). 

 Rhizococcus araucaricc^ Comst., Rep. U.S. Dep. Ag., 1880, p. 339 (1881). 

 Uhleria araucarice, Cooke, Treat. Ins. Inj. Fruit ^ For. Trees, Col., p. 41 

 (1881). 



Ovisac of adult female {figs, i, 2) white ; ovoid ; convex ; of close textures 

 but rather brittle. Length 2-50 to 275 mm. Breadth 1-50 mm. 



Puparium of male {fig. 3) similar to, but smaller and proportionately 

 narrower than that of the female. Dimensions i'5o by 0*50 mm. 



Adult female, before the construction of the ovisac {fig. 10), oblong oval ; 

 olivaceous brown, paler at the margin, with a series of darker diffused spots on 

 the dorso-lateral area. Segments distinct. In fresh examples, in all stages, 

 there is a marginal fringe of glassy processes which are cylindrical till near the 

 apex where they abruptly taper to a point, the resulting form being strongly 

 suggestive of a cricket stump (see fig. 6). These processes are supported 

 by stout chitinous spines. Antenna {fig. 8) seven-jointed, the first reduced 

 to a narrow ring, the third always the longest, the seventh comparatively 

 slender. Occasionally the fourth is slightly longer than the second, and in 

 one instance the second, fourth, and seventh were found to be equal. 

 Limbs well developed ; the tarsus equal in length to the tibia {fig. 17). 

 Claw {fig. 18) strongly falcate, with a minute denticle near the apex. Tarsal 

 digitules strongly dilated at apex, ungual digitules moderately dilated. Spines 

 confined to the margin, where they form a more or less continuous fringe, 

 though tending to separate into groups of two or three on the abdominal 

 segments {fig. 11). There are numerous minute circular pores scattered 

 irregularly over the derm. Anal lobes {fig. 12) approximately cylindrical 

 at the base, obliquely tapering at apex where they terminate in the usual 

 caudal set^e : two spines at base and one near apex of each lobe. Anal ring 

 with 8 stout setK. 



After oviposition the insect shrivels into a shapeless mass which lies at the 

 anterior extremity of the ovisac, the vacated space being packed with 

 orange-yellow eggs {fig. 2). 



Length 1*50 to 2*25 mm. Breadth ro to I'so mm. Average dimensions of 

 twenty examples rgs by i-ii mm. 



Nymph similar in structure to adult, but narrowed posteriorly. 



Adult male {fig. 13) rather stout ; thorax broad and square, much wider than 

 the head ; mesonotum not very prominent. Colour dull fulvous, evenly 

 marbled with reddish brown ; limbs and abdomen paler ; a large brownish 

 spot at base of genital sheath. Wings ample, iridescent. Head {fig. 14) 

 broadly rounded at posterior angles. Rudimentary eyes minute but pro- 

 minent, lateral. Ocelli four, large and prominent, blackish ; two on upper and 

 two on under surface of head. Antenna; ten-jointed, third longest ; finely 

 setose, the apical six joints bearing a few longer knobbed hairs {fig. 16). 



