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''Callococcus'' is a genus of Australian scale insect that feeds on species of ''Leptospermum'', ''Hypocalymma'', ''Kunzea'' and some other members of the tribes Chamelaucieae and Leptospermeae〔Gullan P.J., Miller D.R. & Cook L.G. (2005). Gall-inducing scale insects (Hemiptera: Sternorrhyncha: Coccoidea). In: Biology, Ecology, and Evolution of Gall-Inducing Arthropods (eds. Raman A, Schaefer CW & Withers TM). Science Publishers New Hampshire, pp. 159-229.〕 in the myrtle family Myrtaceae. ''Callococcus leptospermi'' induces stem-swelling galls on some species of ''Leptospermum'', and it is considered to be a potential biological control agent of ''Leptospermum laevigatum'' in South Africa.〔Gordon A.J. (2011). Biological control endeavours against Australian myrtle, ''Leptospermum laevigatum'' (Gaertn.) F.Muell. (Myrtaceae), in South Africa. ''African Entomology'', 19, 349-355.〕 The other described species of ''Callococcus'' do not induce galls.〔 == Morphology == As for most scale insects, the taxonomy of ''Callococcus'' is based on the morphology of the adult female. Like adult females of other scale insects, those of ''Callococcus'' have no wings. They also have no legs and their antennae are reduced to tiny stubs. Adult females are sack-like and range in colour from burgundy to yellowish or brown.〔(ScaleNet: a database of the scale insects )〕 Adult females of ''Callococcus acaciae'' are globular and a red-burgundy colour. They feed on species of ''Kunzea'' and are covered in a curly, stretchy wax that is exuded from glands on their dorsum.〔Maskell W.M. (1893). Further coccid notes: with descriptions of several new species, and discussion of various points of interest. ''Transactions and Proceedings of the Royal Society of New Zealand'' 26, 65-105.〕 Adult females of ''Callococcus newmanni'' and ''C. pulchellus'' are similar to each other,〔Miller D.R., Gullan P.J. & Williams D.J. (1998). Family placement of species previously included in the scale insect genus Sphaerococcus Maskell (Hemiptera: Coccoidea). ''Proc. Entomol. Soc. Wash.'', 100, 286-305.〕 and females of both species produce a waxy covering that looks like a small clam or shell-fish. Adult females of ''C. leptospermi'' are sausage-shaped and brownish in colour.〔Coles R.B., Verberne F. & Brookes H.M. (1988). The immature and adult stages of ''Callococcus leptospermi'' (Maskell) (Homoptera: Coccoidea: Asterolecaniidae), with observations on life history. ''J. Aust. ent. Soc.'', 27, 15-25.〕 Once a female initiates a gall as a nymph she never leaves, and she mates, reproduces and dies inside the gall. ''C. leptospermi'' is ovoviviparous, meaning that the embryos develop inside the female, nourished by special cells (not a placenta), and are born fully developed.〔 First-instar nymphs (crawlers) of ''C. leptospermi'' are generally a pinkish colour and have well developed legs and antennae. They have numerous 8-shaped pores on their dorsum (back).〔 Unusually among scale insects, male and female crawlers of ''C. leptospermi'' exhibit sexual dimorphism.〔 Adult males of ''C. leptospermi'' are winged (single pair, as in other winged male scale insects), pinkish in colour, and have a long slender abdomen.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Callococcus」の詳細全文を読む スポンサード リンク
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