THE SCALE INSECT GENUS ASTEROLECANIUM 223 



Apex of abdomen: Setae, apical apparently 29 n long, interapical (entad of, 

 and anterior to, apical seta on ventral surface) 7.2 /x long, outer ventral (souk 

 times present) about 6 /x long ; anal opening ventral, circular, its margin sclerotized, 

 with 1 seta around 4 /x long on anterior edge. 



Larva. — Elliptical. 



Margin: 8-shaped pores absent; 2 pairs of setae anteriorly. 



Dorsal surface: 8-shaped pores in a submedian row of 9 or 10 and a lateral 

 row of 12, on each half of body, lateral pores slightly larger than snbmedian. 

 anterior pores of each row slightly larger than posterior pores; disk pores near 

 lateral 8-shaped pores. 



Ventral surface: Antennal setae. I. 1 : IV, 1 : V, : VI, 2 long. 2 stour, 2 fairly 

 stout, 2 slender; antennal bases one-half length of antenna apart; beak setae, 

 3 pairs apical ; anterior spiracle with 2 trilocular pores, posterior with 1 ; leg 

 setae, coxa 3. femur 1 on inner margin near base, tarsus 1 each on inner and 

 outer margins : tibia one-fourth as long as tarsus ; 9 pairs of submarginal 8-shapod 

 pores; 7 pairs of submarginal minute setae on abdomen. 1 pair of submarginal 

 larger setae at anterior end; 3 pairs of setae between antennae and mouth parts. 



Apex of abdomen : Setae, apical 90 jx long, interapical 5.4 /x long, outer ventral 

 3.6 ix long; anal opening ventral, close to body margin, circular, its margin 

 sclerotized, with 2 setae 4-5.4 jx long on anterior edge. 



Data. — Described from unmounted specimens, 3 mounted females, 

 and 26 mounted larvae from Quercus eems, Rekawinkel, near Vienna, 

 Austria, May 23, 1896, holotype and paratypes. 



In the adult sta^e the double row of marginal 8-shaped pores dis- 

 tinguishes this species from all other known forms occurring on 

 Fagaceae except tohyonis. It differs from tokyonis in many respects, 

 but particularly in lacking an anal ring having pores and six setae. 

 In the larvae the absence of marginal 8-shaped pores serves to sepa- 

 rate it from all other known species on oak except ilicicola, but the latter 

 normally lacks dorsal 8-shaped pores whereas vie/nmae has more than 40. 



Asterolecanium viridulum Cockerell 



(Fig. 80, J-Q; pi. 5, L) 



Described by Cockerell in 1902 (&£, p. 80) and redescribed by 

 Morrison in 1919 (72, pp. 66-67). 



Habit. — Living on bark, either on flat surfaces or in shallow pits. 



Test of female. — Circular or ovoid, 1.5-2 mm. in diameter to 1.5-2.5 mm. Ions 

 and 1.4-2 wide, posterior end usually slightly produced and elevated: convex 

 dorsally, slightly convex or flat ventrally; greenish or rather clear bright yellow, 

 transparent, smooth, shiny; marginal and dorsal filaments usually dirty white, 

 sometimes with a pale-golden tinge, the latter varying in length, none longer 

 than marginal, arranged in transverse rows except for a median longitudinal 

 group, median filaments as long as any and having a low. crestlike appearance; 

 elliptical larval exit in margin. 



Adult female. — Circular or ovoid. 1.3-1.9 mm. in diameter to 1.3-2.2 mm. 

 long and 1.4-1.8 wide, posterior end slightly produced. 



Margin: 8-shaped pores in a double or triple row (sometimes posterior .1-10 

 pores in a single row) terminating about length of an apical seta from seta! 

 bases, 12-13 /x long and 8 wide, from tin* width to nearly twice the length of 

 a pore apart; the 2 rows from the width to the length of a pore apart; quin- 

 quelocular pores usually in a complete (sometimes briefly interrupted at anterior 

 end) single row terminating at a point removed by 9-26 pores from end of row 

 of 8-shaped pores, nearly or quite as numerous as corresponding 8-shaped pores 

 of nearer row ;it ends of body, usually twice as numerous as that elsewhere; 

 disk pores along dorsal row of 8-shaped pores, much less numerous than the 

 latter. 



Dorsal surface: 8-shaned pores sometimes in a median longitudinal row. and 

 tending toward arrangement in transverse rows elsewhere, the majority 12 m 

 long and 8 wide, a few 9 /x long and 6 wide; minute 8-shaped pores sparse: disk 

 pores fairly numerous; tubular ducts 32-34 p long. 



