SCALE INSECTS (" COCCIDiE ") OF AUSTRALIA. 109 



Genus XL. Lachnodius^ Maskeli. 



Trans. N. Zealand Institute, vol. xxviii, p. 400. 1896. 



The members of tkis genus are peculiar to Australia, and are found upon 

 Eucalyptus and Acacia. 



Maskeli defines the genus as follows :- " Female insect active or station- 

 ary ; naked or covered with cottony, mealy or waxy secretion. Body seg- 

 mented. Antennfe of seven or eight joints, of which the last is not longer 

 than the others ; mentum monomerous ; anal tubercles small or obsolete. 

 Anogenital ring with more than eight hairs. 



" Male insects normal of Dactylopince. 



" The seven-jointed antennae would not in itself be a distinctive character, 

 but the shortness of the last joint, the monomerous mentum, and the hairs 

 of the anal ring are quite sufficient." 



Lachnodius eucaltjpti, Maskeli. 



Dactylopius eucalypti. Trans. N. Zealand Institute, vol. xxiv, p. 35, pi. vii, figs. 9-13. 



1891; vol. XXV, p. 233, 1892; vol. xxvu, p. 65, 1894. 

 Lachnodius eucalypti. Mask, figs. 9-13, 1891; vol. xxviii, p. 400, 1896. 



Type specimens collected by Crawford upon the bark of Eucalyptus 

 amygdalina, South Australia, upon the leaves of E. robusta, Botany, and at 

 Wallsend, New South Wales, on the foliage of E. siderophloia. 



The female attaches herself to the upper surface of the leaf, causing a cir- 

 cular depression in the centre of a reddish blotch in the tissue of the leaf. 

 The coccid fits into this pit, the dorsal surface raised a little above the rim, 

 showing transverse markings covered with fine dull white cottony secretion. 



Adult female, circular, flattened on the dorsal surface, convex beneath in 

 the pit ; at first lightly covered with grey mealy secretion, thickest on the 

 margin ; later on producing more white, longer filaments. Diameter, A" of 

 an inch. Dull red, antennae seven-jointed, the third longest, the seventh 

 hardly longer than the sixth. Legs with rather short tarsus, only one-third 

 the length of the tibia. Digitules fine long hairs. Anal tubercles very small. 

 Anal ring with a number of fine hairs. Epidermis with many small spin- 

 nerets, and a number of long spiny hairs on the cephalic portion. 



Tlie males enclosed in sacs of loose white cotton ; sometimes these tests are 

 scattered among the females, at other times clustered together by themselves 

 on the foliage. 



434. Lachnoditis eucalypti. Cat. Coccidse, p. 95. 



