PROC. ENT. SOC. WASH., VOL. 51, NO. 1, FEBRUARY, 1949 29 A NEW NORTH AMERICAN SPECIES OF PULVINARIAl (HJOMO'PTERA, COCCTDAe) By H. S. McConnell, University of Maryland, College Parle This scale is described at this time to provide a name for a new species that now appears to be native to North America and may become an economic pest of azaleas and Rhododen-dron. Pulvinaria ericicola, new species Adult female unmounted and before formation of the ovisac, elongate oval, about one and one-half times as long as wide, derm reddish brown covered with closely spaced platelets of glassy wax. Fully mature fe-males more rounded, widest in abdominal area, rather flat, wax plates more widely spaced, becoming yellowish in color. The completed ovisac two to four times as long as the scale, and usually elevating the posterior part of the abdomen. At full maturity 2-2. ."i mm. wide and 2.5-.3 mm. long. Adult female mounted (fig. A — all morphological details not drawn to same scale as outline), similar in shape and size to unmounted indi-viduals. The derm not heavily sclerotized at full maturity but clear oval areas become more or less evident. Marginal setae (fig. C) large, stout and straight, gradually tapered to an, acute point, non-fimbriate, 100 to 125 in number, those near anal lobes 30 to 50 microns long, and those on other areas of the body 18 to 25 microns in length. Ventral submarginal setae about half the number of marginal setae, short and slender, 8 to 12 microns in length. Three stigmatic setae (fig. C), the middle one large, gently tapered to a well rounded point, apex curved, two to four times as long as the other two which are similar to the marginal setae in shape and size, frequently somewhat less acutely pointed. Body setae few in number, scattered over both surfaces, most of them small; some on dorsal surface short and stout, peglike; three long ventral pairs, 60-75 microns in length, the posterior pair frequently obscured by the anal plates in slide mounts; and a group of 2 to 4 mesal to each antenna, varying in length from 10 to 35 microns. Anal plates quadrate (fig. H), slightly longer than wide, caudolateral. and cephalolateral sides approximately equal in length, with the lateral angle well rounded; apices of each plate rather pointed with two api-cal setae, two on posterior mesal margin, and two or three subapical setae; two fringe setae on each side, the outer one large and prominent, two to three times as long as the inner one; without hypopygial setae; ventral ridge only faintly indicated. Anal ring (fig. I) normally with three large setae on each half, 95 to 120 microns in length, occasionally one or two, much smaller and shorter setae present. ^Scientific Article No. 1205. Contribution No. 2122 of the Maryland Agricultural Experiment Station (Entomology Department).
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