THE SCALE INSECT CELL'S ASTEROLECANIUM 153 



Data.— Described from specimens (7 females. 11 larvae, 1 adult 

 male, and 2 male nymphs, mounted), on Quercus fhiUyrcu oidi *, Japan, 

 from T. Kuwana, letter of December 5, 1932, No. 85. holotype and 

 paratopes. 



This species is closely related to y and varidbile. 11 is dis- 



tinguished from the former, however, in lacking the sclerotized 

 tongue-shaped projections of the marginal 8-shaped pores and in hav- 

 ing setae on the margin of the anal opening. In perplexum the mar- 

 ginal 8-shaped pores are distinctly larger than in v . the 

 marginal quinquelocular pores terminate nearer the apical setae, and 

 the latter are 64 fi long instead of 48 to 52 p long as in variabile. 

 Larvae of perplexum have only one pore near the posterior spiracle 

 while those of variabile have two. 



ASTEROLECANIUM PETROPHILAE (Fuller) 

 (Fig. 52, A-F; pi. 9, F) 



Briefly described by Fuller as Plunchonm petrophUae in 1897 (36, 

 p. 13^5) from specimens on Petropkila linearis collected at Swan 

 River, West Australia; in 1899 {37. pp. 4oC-Ao7) the species was more 

 fully characterized by the same author and transferred to the genus 

 Asterolecamuni. 



Habit. — Living on both surfaces of leaves, in pits. 



Test of female.— Broadly ovoid or nearly circular. 1.6 mm. long and 1.10 wide, 

 or 1.10-1.6 mm. in diameter; flat or slightly convex dorsally and ventrally ; pale 

 yellow, transparent, glassy; marginal filaments rubbed off; larval exit a slit in 

 margin. 



Adult female. — Usually nearly circular, 0.75-1.5 mm. in diameter. 



Margin : 8-shaped pores in a single row terminating about one-half length 

 of an apical seta from bases of setae, about 9 or 10 m long and 5 or 6 wide, the 

 intervals between them ranging from the width to the length of a pore, the 

 axes of the pores transverse, diagonal, or longitudinal : quinquelocular pores in 

 a single row terminating 5-10 8-shaped pores from end of row, nearly as numerous 

 as corresponding 8-shaped pores. 



Dorsal surface: Minute 8-shaped pores and disk pores sparse, only a few of the 

 former observed on posterior half of body, and a few of the latter on anterior 

 half: tubular ducts 26-28 fx long. 



Ventral surface: Antenna globular, with 3 setae slightly longer than diameter 

 of antenna: beak apparently with 2 pairs of setae; spiracle with bar expanded 

 at inner end, atrium slightly enlarged, shallow, and containing 3-5 quinquelocular 

 pores close to edge. 12-20 similar pores extending from spiracle to body margin 

 in an irregularly single row; submargiDal 8-shaped pores in a single row terminat- 

 ing near the posterior pair of marginal 8-shaped pores and about half as numer- 

 ous as corresponding marginal 8-shaped pores: submarginal setae in a complete 

 row terminating near the posterior pair of marginal 8-shaped pores; 3-5 pairs 

 of setae in genital area, the posterior pair close to anal ring, the other pairs 

 anterior to genital opening and uniformly spaced. 



Apex of abdomen: Setae, apical 4^-56 i± long, interapical S-10 p long, inter- 

 mediate and outer ventral each 6-7 m long (1 sometimes lacking on 1 side of 

 body) : anal opening ventral, between interapical setae, semicircular to elliptical; 

 anal tube fairly short, a little larger at inner than at outer end. rather heavily 

 sclerotized; anal ring a sclerotized semicircular or circular band with 2 setae 

 20-28 u long. 



Second stage. — Resembling adult, but smaller and nearly ovoid: ;ixes of ma- 

 jority of marginal 8-shaped pores longitudinal with body margin, marginal 

 quinquelocular pores lacking: dorsal surface with minute 8-shaped and disk 

 pores more numerous than in adult; ventral surface with atrium of spiracle 

 not enlarged, 2 quinquelocular pores outside spiracular opening and 0-10 similar 



