SCAI.E INSECTS (" COCCID^ ") OF AUSTRALIA. 



151 



Opisthoscelis suhrotuiida, Schrader (Fig. 106). 

 Trans. Ent. Soc. N.S.W., vol. i, p. 7, pi. iii, figs, l-o, 1862. 

 Signoret, Ann. Soc. Ent. France (5), vol. vi, p. 579, 1876. 

 Froggatt, Pro. Linn. Soc. N.S.W., vol. vlii, p. 210, 1893. 

 globosa, Rubsaamen, Berl. Ent. Zeit, Bd. xxxix, p. 214, f. xv, figs. 1-14, 1894. 



This is the common typical species, often covering the foliage of Eucalyftus 

 capitdlata and several other species on the coastal districts, and found on 

 Eucahjinus roitrata, Hay, N.S.W. Rounded green galls.usually perfectly round 

 totheattachmentto the leaf ; they vary in size up to half of an inch in diameter. 

 The basal opening is situated in the centre of a reddish wart on the underside 

 of the leaf. The male galls much smaller, resemble those of the females, but 

 are not so regular in form. 



Fig. 106. — Opisthof!celis sitbrotunda, Selirader 



Adult coccid reddish yellow to brown, covered with fine close hairs and 

 white meal ; almost round, but tapering slightly to the anal tail ; dorsal 

 surface rounded ; abdominal segments well defined ; no fore or middle legs ; 

 hind pair well developed; tarsal joint as long as or longer than the tibia. 

 The whole insect fitting close within the gall chamber, with the peg-like anal 

 appendage closing the basal orifice. Schrader briefly mentions a second 

 species under the name of Opisthoscelis gracilis, but I think that it was only 

 a smaller or immature form of 0. suhrotunda, as the galls are very variable, 

 even upon the same trees, 



162. Opisthoscelis suhrotuiida. Cat. Coccidae, p. 48. 



