THE SCALE INSECT GENUS ASTEROLECAXIOI 133 



Dorsal surface: 8-shaped pores normally in a submedian row of 4 or 5 and a 

 lateral row of 6-9 (usually 9). on each half of body, with the total ranging from 

 20-30, these pores slightly larger than marginal pores; disk pores near posterior 

 end. 



Ventral surface : Antenna apparently ^segmented ; antennal setae. I, 1 : IV. 1 ; 

 V, 0; VI, 2 long. 2 stout, 2 fairly stout, 2 slender: antenna! baa drd length 



of antenna apart: beak setae, 3 pairs apical; anterior spiracle with 1 trilocular 

 and 1 quinquelocular poi le with 1 apparently trilocular pore; 



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

 outer margins : tibia one-fourth as b ng as tarsus : 9 pairs of submarginal 8-shaped 

 ports: 7 pairs of submarginal minute setae on abdomen, 1 pair of submarginal 

 larger setae at anterior end; 2 pairs of setae between antennae and mouth i 



Apex of abdomen: Lobes sometimes indicated; setae, apical 54 \x long, inter- 

 apical 5.4 fjL long, outer ventral 4.6 n long; anal opening in ventral surface and 

 margin, circular; anal tube very short; anal ring close to surface, sclerotized, 

 with 2 setae about 5.7 fi long. 



Data. — Described from unmounted material and the following 

 mounted specimens collected on Quercus: Two females and 1 larva 

 on Quercus sp., Italy, type; 5 females and 6 larvae. Fairmount Park, 

 Philadelphia, Pa.. 6. Paul. August 22, 1908; 2 females. Pencoyd, Pa., 



J. L. Means, received August 30, 1912; 7 females and 8 larvae on 

 Q. lanuginosa, near Sestri Levante in Liguria. Italy. O. Jaap. March 

 16, 1913. O. Jaap Collection Xo. 169; 5 females, Ardmore, Pa., from 

 Peters. Byrne and Co.. received May 22, 1915; 5 females on white oak, 

 Foxburg. Pa.. Hannah Fox, November 3. 1918; 7 females and 3 larvae 

 on white oak, Philadelphia. Pa.. C. F. Jenkins. June 1. 1921; 4 females, 

 Philadelphia. Pa.. H. W. Tradell, March 29. 1922; 3 females on chest- 

 nut oak. Philadelphia, Pa., H. Skinner. September 20, 1922; 7 females, 

 from Davey Tree Expert Co.. Philadelphia. Pa.. November 12. 1925; 

 2 females and 10 larvae on Q. cerris, Vallombrosa, Italy, from F. 

 Silvestri. received May 1934: 1 female, Berlin, Germany, intercepted 

 at Washington, D. C. W. B. Wood. January 26. 1937; 6 females and 4 

 larvae. Norristown, Pa., from M. C. Van Horn. July 15. 1937: 2 

 females on Q. pedunculata, Warsaw, Poland, intercepted at Washing- 

 ton. D. C, D. P. Limber, March 17. 1938; 5 females on Q. montoiTa. 

 Glen Lvon. Pa.. S. Mesavage. August 31. 1938; 2 females. Germany, 

 intercepted at Washington, D. C, W. B. Wood, December 29, 1933. 



This species is closely related to both quercicola and uariolosum, but 

 differs most conspicuously in having less than 14 multilocular pores 

 with 4 or 5 loculi, instead of at least 23 multilocular pores with 6 to 10 

 loculi. in having 25 to 50, instead of 35 to 85, quinquelocular pores in 

 each spiracular pore band, and in averaging 0.95 mm. in diameter 

 instead of at least 1.25 mm. 



Asterolecanium minusculum, new species 



(Fig. 42, B-E; pi. 7, P) 



Habit. — Living on the lower surface of leaves. 



Test of female. — Nearly circular or slightly longer than wide, sometimes in- 

 dented by growth against hairs on leaf, posterior end strongly produced and 

 usually turned up against dorsal surface : 0.5-0.75 mm. in diameter, or 0.6-0.9 mm. 

 long. 0.5-0.75 wide; strongly convex dorsally, the sides nearly vertical, sloping 

 somewhat near posterior end. but posterior tip recurved and practically as high 

 as anterior end, a faint, broad, median carina in central third, also usually with 

 faint transverse striatums; flat ventrally : pale greenish yellow, transparent, thin, 

 shiny; marginal filaments pale greenish yellow, not observed on posterior half; 

 broken dorsal filaments same color as marginal, placed at uniform intervals in 

 submarginal area and 1 or 2 usually present in lateral area ; elliptical larval 

 exit at end of produced area on dorsal surface. 



