SCALE INSECTS {- COCCID^ ') OF AUSTRALIA. 71 



Gonus XXXI [1. Erlonoccus, Targioiii-'rozzctti. 



Siiiiiorot, Ann. Soc. EtiL, France (">), vol. v, j). 2!t. 187."). 

 Coinstock, Report U.S. Dep. Agriculture, j). 337. 1880. 

 Maskfii, ('accidie of New Zealand, j). 92. 1887. 

 Newstoad, Man. of British Coccidie, vol. ii, p. 111."). I(t()2. 

 Catalogue, p. 33. 1809. 



The adult female has the body eloni^ated, ur ovate, segmented; tlie dor.sal 

 surface or margin generally s])iny. Maskell says : '" Several rows of conieaj 

 spines on the dorsal surface. Antenna' com])osed of six or seven joints. 

 Legs present. Anal tid)ercles consi'icuous. Anal orifice with six or eight 

 hairs. 



" The adult female enclosed in' an ovisac of white or yellow felted cotton, 

 elliptical, elongated, oval, and more or less convex, with or without an opening 

 .at the anal extremity. 



" Male puparium resembling that of the female, but smaller. Australia 

 is very rich in species of this genus. Out of sonie sixty species described 

 from all parts of the world, about hal-f of them are peculiar to Australia.'" 



Many of our species excrete so much honey-dew that the plants the^' infest 

 and the ovisacs of the coccids become so thickly coated with fumagine that 

 they are difficult to study or identify from their outward appearance. 



In the Victoiiau Naturalist, vol. xxi, 1904, Mr. E. E. Green gives a catalogue 

 of the Australian species in parallel columns, showing the characters and 

 food-plants of the different species recorded up to that date. In a pa]:er 

 " On Some Coccid Pests of Economic Importance," published in the Journal 

 of Ecovomic Biology, 1910, Green points out that MaskelFs Eriococcxis jxira- 

 doxius and E. paradoxus, var. simplex have to be removed from this genus, 

 and he places them in the genns Cerococcvs. I have therefore left them to 

 ))e dealt with in my su])])lement. 



Eriococois at/on is. Fuller. 

 Journal of D.pt. of Agriculture, We-st Au.stnilid. \v\. iv. ]>. 134."). 1897. 

 Trans. Ent. Soc. London, p. 439. 1899. 



This species was described from sjx'cimens collected a])on the foliage of 

 the " Native Fei)])ermint " {A(/ovis Jtexiiosa), near Perth, Western Australia. 



Adult female enclosed in an elongate oval sac of loose texture, probablv 

 white, but usually discolored with fumagine. 



Fema'e coccid ])ur])le,. segmented, elongate, convex. Lengtli 0-06 inch. 

 Antennic tapering, with seven joints, second and third subequal, last longest, 

 sometimes appearing to consist of two joints. Tarsus twice the length of the 

 tibia; digitules present. Anal tubercles normal, each bearing five si)ines: 

 one on either side and tliree at the base : a thornlike sj)ine u[)on the inner 

 margin and a long slender one at tlie ti|). Anal ring })robably with eight 

 hairs. Dorsum with a few scattered spines and two upon the margin of each 

 segment. 



285. Eriococcus a(/onis. Cat. Cocciche. p. 71. 



