Dactylopiince. 399 



ANTONINA ZONATA, Green. 



(Plate CLXVIII.) 



Antonina zo7iata^ Green, Ent. Mo. Mag., 3rd ser., Vol. V. p. 175 (1919). 



Adult female {figs, i, 8, 9) naked, resting on a bed of white mealy secretion. 

 There is also a small patch of greyish secretion, at the anterior extremity, of 

 the consistency of beeswax, which appears to serve the purpose of fixing 

 the insect in position. A colourless tubular filament usually projects from the 

 anal orifice, carrying a globule of liquid excreta at its extremity. The insect is 

 actually pyriform, though it has the appearance of being globular owing to the 

 anterior thinner prolongation being concealed in the angles of the branches. 

 Superficially, it might be described as baccate {fig. i). Smooth ; roundly dis- 

 tended behind, bluntly pointed in front {fi^. 9). Colour olivaceous, with deep 

 brown transverse mottled bands (medially interrupted) on the dorsum ; deepen- 

 ing to almost uniform brown in old examples. Antenna {fig. 15) consisting of 

 an irregularly conical terminal joint, the truncate extremity concave and bear- 

 ing a group of stout curved setae, and a broad shallow basal joint. Spiracles 

 {fig. 19) large and conspicuous, the walls of the external aperture closely 

 studded with trilocular ceriferous pores ; many other simple pores surrounding 

 the aperture. Anal ring set in a wide pit with a comparatively small broadly 

 oval or circular orifice through which the anal setos project {fig. 16). The 

 external orifice is surrounded by circular ceriferous pores and many stout hairs 

 {fig. i8). The anal ring \is&\i{ fig. 17) has a deeply milled circumference and 

 bears six long, stout setae. The derm varies in density according to the age of 

 the insect. In fully mature examples it becomes almost rigid and opaque, 

 when it displays numerous small oval translucent cells {fig. 20). These cells are 

 scarcely noticeable in the early adult insect. Length 275 to 5 mm. Breadth 

 2'5o to 4 mm. 



Nymphal female {figs. 5, 6) oval, flattish, dull red. Antenna {fig. 7) similar 

 in form to that of the adult. The insect, in this stage, is completely concealed 

 beneath the leaf-sheaths of the plant. 



Young larva {fi^. 2) pinkish ochreous, thinly dusted with white mealy 

 secretion. Resembling a small Psetidococctes, like which it has two pairs of 

 conspicuous glandular fove^e on the dorsum — on the prothoracic segment and 

 at the junction of the penultimate and antepenultimate abdominal segments 

 {fi^- a)- Length 075 mm. 



Adult male {fig. 13) minute ; dull brown ; wings whitish ; with a pair of stout 

 white caudal filaments. Sheath of penis short and stout. Legs and antennae 

 comparatively short, the latter considerably less than half the length of the 

 body. Antenna {fig. 14) ten-jointed ; terminal joint as long as the eighth and 

 ninth together, with three longish fine knobbed hairs at the extremity. Length 

 (without appendages) i mm. 



Male puparium {fig. 12) in the form of an elongate narrow felted sac. The 

 puparia are usually attached to the inner surface of a stipule {fig. 1 1). 



The adult females are clustered in the axils of the branches of a Bamboo 



