Cylindrococcus
Cylindrococcus | |
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Gall of adult female of C. spiniferus | |
Scientific classification | |
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Superfamily: | Coccoidea |
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Genus: | Cylindrococcus Maskell
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Cylindrococcus is a genus of
Systematics
Cylindrococcus is currently classified in the scale insect family
There are two species currently recognised in Cylindrococcus, C. casuarinae (the
Morphology
Like most scale insects, Cylindrococcus exhibits marked sexual dimorphism. Adult females are wingless, practically legless and cylindrical, and about 2–9 mm in length. Adult females of C. casuarinae have large, bulbous membranous lobes where the mid and hind legs would be, whereas C. spiniferus has only sclerotised patches in these areas. Adult females of the two species can also be separated by the semicircular plates with robust spines near the anus of C. spiniferus that are not present in C. casuarinae.[1]
Adult males are small (about 3–5 mm long) and winged.[7] Adult males have very long thin external genitalia that, it has been argued, allow them to mate with adult females that are deep within galls. Males induce their own galls (7–17 mm long), which are long and thin bract-like galls on the tip of branchlets.[7]
Males and females are both a reddish colour: reddish brown or burgundy for females, and a reddish pink for males.
See also
References
- ^ a b c d Gullan P.J. (1984). A revision of the gall-forming coccoid genus Cylindrococcus Maskell (Homoptera: Eriococcidae). Aust. J. Zool., 32: 677-690.
- ^ Miller D.R. & Gimpel M.E. (2000). A Systematic Catalogue of the Eriococcidae (Felt Scales) (Hemiptera: Coccoidea) of the World. Intercept Ltd, Andover, UK.
- ^ Balachowsky A. (1942). Essai sur la classification des cochenilles (Homoptera-Coccoidea). Annls Éc. natn. Agric. Grignon, 3, 34-48.
- ^ Cook L.G. & Gullan P.J. (2004). The gall-inducing habit has evolved multiple times among the eriococcid scale insects (Sternorrhyncha: Coccoidea: Eriococcidae). Biol. J. Linn. Soc. Lond., 83, 441-452.
- ^ Maskell, W. M. (1893). Further notes: with descriptions of new species from Australia, India, Sandwich Islands, Demerara, and South Pacific. Trans. N.Z. Znst. 25, 201-52.
- ^ Fuller, C. (1897). Some Coccidae of Western Australia. J. West. Aust. Bur. Agric. 4, 1344-6.
- ^ a b Gullan P.J. (1978). Male insects and galls of the genus Cylindrococcus Maskell (Homoptera: Coccoidea). J. Aust. Entomol. Soc., 17, 53-61.