. A descriptive catalogue of the scale insects ("Coccidae") of Australia. Insects -- Australia; Scale insects. 12 SCIENCE BULLETIN, No. 19. narrow slit along the back of the coccid. The gall cavity is smooth above^ with the bottom covered with white meal, upon which the coccid rests Length of gall from ^ of an inch, and the thickness from 5^ to |- inch. Adult female fitting closely into the gall chamber, varying in colour from olive green to brown or black, lightly covered with floury secretion. Length, quarter of an inch. General form elliptical, about a quarter of an inch in length
. A descriptive catalogue of the scale insects ("Coccidae") of Australia. Insects -- Australia; Scale insects. 12 SCIENCE BULLETIN, No. 19. narrow slit along the back of the coccid. The gall cavity is smooth above^ with the bottom covered with white meal, upon which the coccid rests Length of gall from ^ of an inch, and the thickness from 5^ to |- inch. Adult female fitting closely into the gall chamber, varying in colour from olive green to brown or black, lightly covered with floury secretion. Length, quarter of an inch. General form elliptical, about a quarter of an inch in length. Antennae obsolete, only represented by minute tubercles; legs wanting. Four principal spiracles large; epidermis covered with circular spinneret orifices, thickest and largest on the dorsal surface. Anal ring small, hairless; anal tubercules obsolete. 372. Sphaerococcus leftospermi. Cat. Coccidse, p. 86. Sphaerococcus melaleucae, Maskell. Trans. New Zealand Institute, vol. xxvi, p. 94, pi. vi, f. 15-20, 1893. Sphaerococcus acacia var. melaleuca, Cockerell. These insects are not uncommon on the twigs of the titree {Melaleuca liniariifolia), growing at Penshurst, Flemington, and similar localities in the vicinity of Sydney. The adult females form no galls, but cover themselves with small masses of roughened black waxy secretion, from which project smaller conical processes of unequal length. Diameter of test, one-tenth of an inch. Adult female dull reddish pink; general form convex, elliptical, taper- ing to the apex. Diameter, one-twentieth of an inch. The cephalic and thoracic segments smooth, the abdominal ones smaller, tapering, and closely marked with convoluted corrugations. Antennae composed of five very short joints, the last somewhat globular, with several long hairs. Legs wanting. Thoracic spiracles rather large and close to each a group of circular spinneret-orifices. Epidermis bearing some circidar spinnerets. Anal ring without hairs, anal tubercles absent, with no
Size: 1231px × 2030px
Photo credit: © Paul Fearn / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectscalein, bookyear1915
