THE SCALE INSECT GENUS ASTEROLECANIUM 175 



Data. — Redescribed from unmounted material, approximately 90 

 mounted females, and many mounted larvae from the following lots 

 (all collected on Quercus) : On English oak, no other data; Newburg, 

 X. C. Mrs. Rains, Cockerell Collection; on Q. pedunculate Pari-. 

 France, determined as auercicola by Signoret. loaned by M. Beier; 

 Xew York. August 30. 1898: on Q. bicoJor. Breslau, Silesia, Germany. 

 C. Baenitz. November 9. 1899. U.S.X.H.: on Q. alba, Yonkers, X. V.. 

 E. P. Felt. September 16. 1901; Johannesburg. South Africa. January 

 20. 1908. C. W. Howard Xo. 56 : on English oak. Botanic Garden. Wash- 

 ington, D. C, J. G. Sanders. Xovember 1908: Xew York Zoological 

 Park. X. Y., H. W. Merkel, March 25, 1909; on Q. robar. Prignitz, 

 Brandenburg. Germanv. O. Jaap. June 2. 1916. Xo. 251; on Q. robwr, 

 Christchurch. Xew Zealand. R. J. Tillyard, letter May 11. 1922: on 

 chestnut oak. Bear Mountain. X. Y.. F. M. Schott, September 13. 1925; 

 Eberswalde. Germany, from Walter Horn, letter May 11. 1928: on 

 Q. robar. Berlin. Germany, intercepted at Washington. D. C. D. P. 

 Limber. January 27, 1930: Stanford University. Calif.. C. T. Paine, 

 received in 1931: on red oak. Ithaca. X. Y.. G. W. Herrick. June 27. 

 1932: on Q. argenteo-marginata, Weener. Germanv. intercepted at 

 Washington, D. C. D. P. Limber. April 20. 1934: Berlin. Germany, 

 intercepted at Washington. D. C. W. B. Wood. January 26. 1937: on 

 Q. pontic". Germany, intercepted at Washington. D. C. D. P. Limber. 

 December 27. 1937: on Q. sessUirlora Jaciniata^ Dublin, Ireland, inter- 

 cepted at Washington. D. C. D. P. Limber, January 7. 1939. 



Closely related to minus and variolosum. In the adult stage ii can 

 be distinguished from minus by the presence of approximately 23 to 33 

 multilocular pores instead of about 8. and from variolosum by having 

 23 to 33 such pores instead of approximately 50 to 62. In the larval 

 stage it can be separated from minus by the presence of about 21 dorsal 

 8-shaped pores instead of around 30 and by having apical setae 66 

 instead of 51 fi long, and from variolosum by the number of dorsal 

 8-shaped pores, variolosum having none or rarely 1 to -4. 



ASTEROLECANIUM RADIATUM, new species 



(Fig. 59, A-E ; pi. 5. Vi 



Habit. — Living on the lower surface of leaves. 



Test of female. — Slightly longer than wide, posterior end produced and 

 upturned: 1.4 mm. long. 1.10 wide: slightly convex dorsally, with faint longi- 

 tudinal median and lateral carinae, and with faint transverse striations that 

 give the longitudinal carinae the appearance of having minute tuhercles: flat 

 ventrally : pale yellow, transparent, fairly thin, slightly punctate, very shiny: 

 marginal filaments pale yellow: larval exit elliptical, at tip of produced area. 



Adult female. — Slightly longer than wide, posterior end produced: 1 mm. long, 

 0.85 wide. 



Margin: 8-shaped pores in a single row terminating nearly length of an 

 apical seta from bases of setae. 8 u long and .1 wide, aboul a pore's width apart: 

 quinqueloculai pores absent, or 2—1 where each spiracular pore band meets 

 margin. 



Dorsal surface: Minute 8-shaped pores numerous: disk pores rather sparse, 

 a few near margin: tubular ducts 32 u long: dorsal tubes present. 



Ventral surface: Antenna dome-shaped, with. 2 sola" much longer than 

 diameter of antenna and possibly 1 much shorter; beak without setae: spiracular 

 liar fairly broad, sometimes expanded at inner end: 10-12 quinquelocular pores 

 (including any that may occur on margin I extending from spiracle to body 

 margin in a single row: 1 dark-rimmed 8-shaped pore each side of beak, a few 

 on anterior end. and a few in 4 transverse rows anterior to genital opening: 



