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142 MISC. PUBLICATION 42 4, U. S. DEPT. OF AGRICULTURE 



Asterolecanium oblongum, new species 



(Fig. 45, H-M; pi. 9, E) 



Balit. — Living on the lower surface of leaves. 



Test of female. — Elongate, about 2 mm. long and 0.5 wide ; slightly convex 

 -dorsally, flat ventrally ; yellow, transparent, fairly thin, shiny ; marginal filaments 

 .broken off ; larval exit apparently a slit in margin. 



Adult female. — Elongate, about 1.75 mm. long, 0.5 wide. 



Margin : 8-shaped pores in a single row terminating two to three times the 

 length of an apical seta from bases of setae, about 15 pores at anterior end 12.6 fi 

 long and 7.2 wide, the others 10.8 ix long and 5.4 wide, usually a pore's width 

 apart near spiracular pore bands and nearly contiguous elsewhere ; quinquelocular 

 pores in a single row from near antennae to a point usually much nearer to posterior 

 spiracular pore bands than to the posterior pair of 8-shaped pores, usually about 

 half as numerous as corresponding 8-shaped pores near ends of row, and about 

 as numerous as those pores elsewhere ; disk pores dorsad of 8-shaped pores and 

 much less numerous tbari the latter, although the row extends slightly beyond the 

 ends of the row of 8-shaped pores. 



Dorsal surface : Minute 8-shaped and disk pores fairly numerous ; tubular ducts 

 28 fi long ; dorsal tubes present. 



Ventral surface : Antenna short, with 2 setae longer and 2 shorter than diameter 

 of antenna ; beak without setae ; spiracle with bar fairly broad and with atrium 

 slightly enlarged and containing 3-5 quinquelocular rores, 8-12 similar pores 

 extending from spiracle to body margin in an irregularly single, double, or triple 

 row ; 2-4 dark-rimmed 8-shaped pores each side of mouth parts, 1 or 2 anterior to 

 mouth parts, and a few on abdomen arranged in 3 or 4 transverse rows ; sub- 

 marginal 8-shaped pores in a single row terminating near genital opening, usually 

 about half as numerous as marginal 8-shaped pores; 8 pairs of submarginal setae, 

 all posterior to anterior spiracular pore bands, the posterior pair slightly anterior 

 to the posterior pair of marginal 8-shaped pores ; 1 pair of setae posterior to 

 genital opening, 1 pair anterior to opening, and 1 pair anterior to those. 



Apex of abdomen : Slightly concave ; setae, apical 16-20 fj. long, interapical 7.2 n 

 long, inner ventral 3.6 v long and slightly nearer to median line than to apical 

 seta, outer ventral 5.4-7.2 fi long ; anal ring with 6 setae 27-29 fi long, and with an 

 inner row of 6 and an outer row of 12 pores, tending toward division on dorsal 

 and ventral sides. 



Larva. — Elongate elliptical. 



Margin : With 28 8-shaped pores, the posterior pair larger tban next 5 pairs, 

 which, together with the anterior pair, are slightly larger than the remaining 7 

 pairs, axes of all longitudinal ; 3 pairs of setae at anterior end. 



Dorsal surface : 8-shaped pores in a submedian row of 7 on each half of body, 

 the posterior pores slightly smaller than the anterior ones, which are around 

 two-thirds the size of marginal pores of same segments ; disk pores in lateral 

 area and possibly in submarginal area. 



Ventral surface: Antennal setae, I, 1; IV, 1; V, 0: VI, 2 long, 2 stout, 3 

 fairly stout, 1 slender ; antennal bases around one-third length of antenna 

 apart ; beak setae, 2 pairs apical, 1 pair basal ; spiracle with 1 trilocular pore ; 

 leg setae, coxa 4, femur 1 on inner margin near base and 1 each on inner and 

 outer margins near center, tarsus 2 on inner and 1 on outer margin ; tibia 

 about one-third as long as tarsus ; 9 pairs of submarginal 8-shaped pores ; 

 apparently 8 pairs of submarginal minute setae posterior to anterior spiracles, 

 2 pairs of submarginal larger setae at anterior end ; 1 pair of setae between 

 antennae and mouth parts. 



Apex of abdomen : Setae, apical 54 /* long, interapical 12.6-14.4 p long, inner 

 ventral apparently 2 n long, outer ventral 3.6 /jl long ; anal ring with 6 setae, 

 each about 5.4 fi long, and possibly with 2 pores. 



Data. — Described from the following material: Unmounted speci- 

 mens, two mounted females, and one poor mounted larva, on Gigan- 

 tochloa tessellata, Chekiang, China, F. N. Myer, July 12, 1915, U. S. 

 IS". H., paratypes; two mounted females and eight mounted larvae on 

 bamboo, China, intercepted at New York, S. D. Whitlock, one female 

 on June 8, 1937, the other specimens on June 18, 1937, holotype and 

 paratypes. 



