38 MISC. PUBLICATION 42 4, IT. S. DEPT. OF AGRICULTURE 



Data. — Kedescribed from two mounted females, Maskell Collection 

 No. 423, U. S. National Museum Catalogue No. 40359, holotype and 

 paratype, concerning which Morrison and Morrison (7J, p. 4) said, 

 "obtained from the Maskell collection, and, on the basis of his descrip- 

 tive notes, collected at Sydney, New South Wales, on Acacia species. 

 This material was a part of his lot No. 423, and was regarded by him 

 as the species ventruosum"; unmounted material, three mounted fe- 

 males, and two mounted larvae, Maskell, Cockerell Collection. 



The diameter of the specimens is 1.25-1.5 mm. instead of "0.7," and 

 the number of rows of multilocular pores is four complete and one or 

 two interrupted instead of "apparently two," as given in the original 

 description. The authors stated, "apparently without quinquelocular 

 disk pores, replaced at spiracles and along margin by small size multi- 

 locular disk pores, mostly with 10 loculi, but somewhat variable" 

 (73, p. 4). In 1 of the specimens examined the majority of these pores 

 have 5 loculi, and in the other specimens the majority have 6 to 8 loculi, 

 but there are some pores in all specimens with 5 to 10 loculi. 



In adults of this species the interapical setae are situated on the ven- 

 tral surface close to the ventral setae and appear to be more closely 

 associated with the latter than with the apical. Moreover, what is 

 believed to be the posterior pair of submarginal setae is sometimes so 

 close to the ventral setae that it actually appears to be a ventral pair. 

 Thus the general appearance is, as shown in figure 2, /£", of a pair of 

 apical setae and four pairs of ventral setae rather than an apical, an 

 interapical, two ventral, and a submarginal pair. 



Asterolecanium acutulum, new species 



(Fig. 3, A-K ; pi. 9, L) 



Habit. — Living on the lower surface of leaves. 



Test of female. — Elongate, widest on anterior third, tapering to a rather 

 pointed posterior end, margin sometimes indented by growth against hairs on 

 leaf; 0.85-1.6 mm. long, 0.5-0.6 wide; slightly convex dorsally, usually with a 

 faint longitudinal median carina, flat ventrally ; brownish or very pale yellow, 

 nearly colorless, transparent, thin; marginal filaments colorless, glassy, longest 

 at anterior end, and whitish or brownish dorsal filaments longer than marginal 

 and sparse in submarginal area or along median line ; circular larval exit in 

 ventral surface at margin. 



Adult female. — Same shape as test, 0.75-1.5 mm. long, 0.4-0.5 wide. 



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

 apical seta from setal bases, posterior pores 6 /x long, or all pores 8-9 /x long and 

 4-4.5 wide, intervals between them ranging from the width to the length of a 

 pore; quinquelocular pores absent or 2 or 3 present opposite spiracular pore 

 bands. 



Dorsal surface : 8-shaped pores sometimes absent but usually present in sub- 

 marginal area and occasionally along median line, 8-9 fx long and 4-5 wide ; 

 minute 8-shaped pores rather numerous ; disk pores very sparse ; tubular ducts 

 24 ix long; dorsal tubes present. 



Ventral surface : Antenna short, often sunken in derm, with 2 setae longer than 

 diameter of antenna ; beak without setae ; spiracular bar slender and slightly 

 expanded at inner end; 10-13 (including those on margin) quinquelocular pores 

 extending from spiracle to body margin in a single row ; multilocular pores, total- 

 ing 19-21, with 5-9 loculi, arranged in 3 complete rows each having 4-7, and 1 

 interrupted row having 2 ; 1 or 2 dark-rimmed 8-shaped pores each side of beak, 

 others occurring sparsely in lateral area of abdomen and in a transverse row 

 in each of anterior 2 complete rows of multilocular pores ; submarginal 8-shaped 

 pores in a single row ending opposite the posterior marginal 8-shaped pores, 

 usually as numerous as marginal 8-shaped pores; 6 pairs of submarginal setae 

 on abdomen, the posterior pair opposite the penultimate pair of marginal 8-shaped 

 pores ; 1 pair of setae in each complete row of multilocular pores. 



