168 MISC. PUBLICATION 4 2 4, U. S. DEPT. OF AGRICULTURE 



sp. from Canal Zone ; Zizyphus spp. from Florida and Brazil ; unknown 

 hosts from Florida, Cuba, Puerto Rico, St. Thomas, Mexico, Canal 

 Zone, Honduras, Trinidad, Egypt, Palestine, Madagascar, and Hawaii. | 



Aster 'olecanium pustulans is an interesting species in several respects, 

 but particularly in its tendency to produce pits. This habit, however, 

 apparently is governed primarily by the susceptibility of the host to 

 pit formation because some infested hosts do not show any depres- 

 sions, while others show gradations from shallow pits to deep cavities. 

 When deep pits are formed there is a tendency for the host tissue to 

 draw together at the opening, thus concealing the insect. In the 

 mounted insects all structures are amazingly constant except the num- 

 ber of dorsal 8-shaped pores. The larva of pustulans is the only one 

 known to the writer in which there are different numbers of long setae 

 on the coxae, there being four on the anterior and middle ones but only 

 three on the posterior coxa. 



Asterolecanium puteanum, new species 



(Fig. 56, F-K; pi. 8, H) 



Referred to by Felt and Bromley in 1937 (31, p. 20) as Asteroleca- 

 nium, sp. 



Habit. — Living on bark, in shallow or deep pits. 



Test of female. — Usually ovoid, sometimes nearly circular, 1.2-2 mm. long and 

 1-1.8 wide, or 1.2-2 mm. in diameter ; slightly convex dorsally, with a rather 

 broad, flat, longitudinal median carina, and without or with inconspicuous sub- 

 marginal carinae ; slightly or strongly convex ventrally ; greenish yellow, trans- 

 parent, thin ; marginal filaments pale yellowish, sometimes slightly golden ; dorsal 

 filaments pale yellowish, usually scattered over entire surface, but sometimes 

 numerous in median and submarginal areas and absent in submedian area near 

 posterior end, about the same length as marginal filaments ; elliptical larval exit 

 in ventral margin. 



Adult female. — Usually ovoid, sometimes nearly circular, posterior end slightly 

 produced ; 1-1.75 mm. long and 0.9-1.6 wide, or 1-1.75 mm. in diameter. 



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

 of an apical seta from setal bases, posterior pores 10 /j. long and 6 wide, the others 

 12 /j. long and 8 wide, usually around a pore's width apart, axes of some pores 

 diagonal to body margin ; quinquelocular pores in a single row terminating with 

 1 beyond the end of the row of 8-shaped pores, slightly more numerous than 

 8-shaped pores. 



Dorsal surface: 8-shaped pores scattered over entire surface or present only 

 in median and submarginal areas, submarginal pores in fairly definite transverse 

 groups not reaching median group except near mouth parts, slightly more numer- 

 ous along median line than elsewhere, 10-12 n long and 6-8 wide ; minute 8-shaped 

 pores fairly numerous : disk pores rather sparse ; tubular ducts 30 \x long. 



Ventral surface : Antenna very short, sunken in derm, with 2 setae shorter 

 and 2 slightly longer than diameter of antenna : 1-4 quinquelocular pores between 

 antenna and margin ; beak with 2 pairs of setae ; spiracular bar subcircular ; 

 10-20 quinquelocular pores extending from spiracle to body margin in an irregu- 

 larly single or double row; multilocular pores, with 10-12 loculi, in 6 complete 

 and 3 interrupted rows, the anterior interrupted row anterior to posterior 

 spiracles, posterior row with 6-9 pores, penultimate row with 11-15, each of next 

 3 with 14-23, next with 11-13, and each of interrupted rows with 2-5, the total 

 ranging from 90-115 ; 1-3 dark-rimmed 8-shaped pores each side of mouth parts, 

 a few scattered on anterior half of body, and a few arranged in 3 or 4 transverse 

 rows among multilocular pores; submarginal 8-shaped pores in an irregularly 

 single row terminating near the penultimate row of multilocular pores, usually 

 about half as numerous as corresponding marginal 8-shaped pores : submarginal 

 setae in a complete row terminating near the penultimate or posterior pair of 

 marginal 8-shaped pores ; 2 pairs of setae in posterior row of multilocular pores, 

 1 pair in penultimate row, and sometimes 1 seta in the next row. 



Apex of abdomen : Notch present ; lobes indicated ; setae, apical 72-80 m long, 

 interapical 14.4-18 ix long, dorsal 9 n long, intermediate ventral 7.2 n long, outer 



