SCALE INSECTS (" COCCID.E ") OF AUSTRALIA. 37 



Genus LVII. leery a^ Signoret. 



Ann. Soc. Entom. France, vol. v, p. 390, 1875. 

 Comstock, Beport Dep. Agr. U.S., 1880, p. 547. 

 Maskell, Goccidae of New Zealand, 1887, p. 104. 



The members of this genus are well known mealy bugs, on account of the 

 widespread damage one species {Icerya purchasi) did in the American orange 

 orchards. 



The adult females have long, eleven- jointed antennae, the whole or part of 

 the insect clothed with fine mealy secretion or cotton, stationary, with or 

 without an ovisac ; segments of abdomen hardly defined. Rostrum and 

 mentum present. Adult males with remarkable dilated antennae, without 

 tassels on the abdomen. 



Icerya aegyptiacae, Douglas. 



(Crossotosoma.) Entomologists'' MontMy Magazine, vol. xxvi, p. 79, 1890, and Kew 



Bulletin, No. 41, 1890. 

 Riley and Howard, Insect Life, vol. ii, p. 256, ; vol. iii, pp. 97-105, and 423 ; 



vol. vii, pp. 51-271. 

 Newstead, Ent. Monthly Magazine, vol. xxix, p. 167, 1893, and vol. xxxiii, p. 60, 



1894. 

 Maskell, Trans. New Zealand Institute, vol. xxv, p. 99, 1893. 



The discovery of this coccid in several different parts of the world within 

 a few years makes it very doubtful where it originally came from, though it 

 was first found in Egypt (where it was a serious pest in the gardens of Cairo 

 and Alexandria), and has since been called the " Egyptian Icerya." It was 

 found in North America, Madras, India, Ceylon, and Australia ; in the latter 

 country by me, upon a small native plant, Goodenia ovata, at Penshurst, 

 near Sydney. 



The adult female measures a quarter of an inch, and is more flattened, 

 resting on the leaf, with the cottony filaments not forming a fluted mass 

 behind the anal portion, as in Icerya pur chasi, but spreading round the margins 

 in curved and curled strands. 



48. Icerya cp,gyptiaca. Cat. Coccidse, p. 24. 



Icerya Tcoehelei, Maskell. 



Entomologists' MontMy Magazine, vol. xxviii, p. 184, 1892. 



Trans. New Zealand Institute, vol. xv, p. 245, pi. xviii, figs. 5-11, 1892. 



This species was sent by Prof. Koebele, who found odd specimens upon 

 Leptospermum laevigatum, both near Sydney, New South Wales, and Brisbane, 

 Queensland. 



I have them in the same manner on the same shrub about Sydney, but it is, 

 comparatively speaking, a rare species. 

 t 99121— C 



