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Species Coccus longulus (Douglas, 1887)

Long Brown Scale, Long Soft Scale

 

Generic Combinations

 

Distribution

States

New South Wales, Northern Territory, Queensland, South Australia, Western Australia


Ecological Descriptors

Sap-feeder.

 

ID Keys

(Hodgson, C.J. & Henderson, R.C., 2000) [195] (female; New Zealand); (Tang, F.T., 1991) [76] (female; China); (Williams, D.J. & Watson, G.W., 1990) [82] (female; tropical South Pacific); (Hamon, A.B. & Williams, M.L., 1984) [38] (female; USA, Florida); (Tao, C.C.C., Wong, C.Y. & Chang, Y.C., 1983) [63] (female; Taiwan); (Ezzat, Y.M. & Hussein, N.A., 1969) [372] (female; Egypt); (Beardsley, J.W., 1966) [483] (female; Micronesia); (Zimmerman, E.C., 1948) [293] (female; Hawaii)

 

SYSTEMATICS

Ben-Dov, Y. 1977. Taxonomy of the long brown scale Coccus longulus (Douglas) stat. n. (Homoptera: Coccidae). Bulletin of Entomological Research 67: 89–95 showed that the earliest available binomen for this species was Lecanium longulum Douglas and not Lecanium elongatum Signoret. The erroneous synonymy of L. elongatum over L. longulum and the erroneous usage of the former were introduced by Sanders, J.G. 1909. The identity and synonymy of some of our soft scale-insects. Journal of Economic Entomology 2: 428–448. Lecanium elongatum Signoret is a junior synonym of Parthenolecanium persicae (Fabricius).

STRUCTURE

Adult female elongate oval; up to 7 mm long; dorsum of young female yellow with dark brown mottling, while in fully grown female it is uniformly brown. See colour photograph in Kawai, S. 1980. Scale insects of Japan in colors. Tokyo : National Agricultural Education Association 455 pp. [fig. 6.10), Hamon, A.B. & Williams, M.L. 1984. The soft scale insects of Florida (Homoptera: Coccoidea: Coccidae). In, Arthropods of Florida and Neighboring Land Areas. Gainesville : Fla. Dept. of Agric. & Consumer Serv. Div. Plant Ind. 194 pp., Gill, R.J. 1988. The Scale Insects of California: Part 1. The Soft Scales (Homoptera : Coccoidea : Coccidae). Sacramento, California : California Dept of Food & Agriculture 132 pp., Wong, C.Y., Chen, S.P. & Chou, L.Y. 1999. [Guidebook to Scale Insects of Taiwan.]. Wufeng, Taichung, Taiwan : Taiwan Agricultural Research Institute 98 pp., and Hodgson, C.J. & Henderson, R.C. 2000. Coccidae (Insecta: Hemiptera: Coccoidea). Lincoln, Canterbury, New Zealand : Manaaki Whenua Press 259 pp..

GENERAL

Most records of Coccus elongatus (Signoret) – of authors – until 1977, were misidentifications of Coccus longulus. Good description and illustration of the adult female given by Ben-Dov, Y. 1977. Taxonomy of the long brown scale Coccus longulus (Douglas) stat. n. (Homoptera: Coccidae). Bulletin of Entomological Research 67: 89–95, Gill, R.J., Nakahara, S. & Williams, M.L. 1977. A review of the genus Coccus Linnaeus in America north of Panama (Homoptera: Coccoidea: Coccidae). Occasional Papers in Entomology, State of California, Department of Food and Agriculture 24: 44, Hamon, A.B. & Williams, M.L. 1984. The soft scale insects of Florida (Homoptera: Coccoidea: Coccidae). In, Arthropods of Florida and Neighboring Land Areas. Gainesville : Fla. Dept. of Agric. & Consumer Serv. Div. Plant Ind. 194 pp., Gill, R.J. 1988. The Scale Insects of California: Part 1. The Soft Scales (Homoptera : Coccoidea : Coccidae). Sacramento, California : California Dept of Food & Agriculture 132 pp., Williams, D.J. & Watson, G.W. 1990. The Scale Insects of the Tropical South Pacific Region. Pt. 3: The soft scales (Coccidae) and other families. London : CAB International Institute of Entomology 267 pp., Tang, F.T. 1991. [The Coccidae of China]. Taiyuan, P. R. China : Shanxi United Universities Press and by Hodgson, C.J. & Henderson, R.C. 2000. Coccidae (Insecta: Hemiptera: Coccoidea). Lincoln, Canterbury, New Zealand : Manaaki Whenua Press 259 pp..

BIOLOGY

El-Minshawy, A.M. & Moursi, K. 1976. Biological studies on some soft scale-insects (Hom. Coccidae) attacking guava trees in Egypt. Zeitschrift für Angewandte Entomologie 81: 363–371 studied the duration of development and fecundity on guava in Egypt. Buckley, R.C. & Gullan, P.J. 1991. More aggressive ant species (Hymenoptera: Formicidae) provide better protection for soft scales and mealybugs (Homoptera: Coccidae, Pseudococcidae). Biotropica 23(3): 282–286 showed, in Papua New Guinea, that attendance by the aggressive ant, Iridomyrmex nitidus (Mayr), reduces the rate of parasitization.

 

History of changes

Note that this list may be incomplete for dates prior to September 2013.
Published As part of group Action Date Action Type Compiler(s)
05-Jun-2024 COCCOIDEA 19-Feb-2024 MODIFIED Dr Vivian Sandoval (ABRS)
21-Nov-2012 01-May-2014 MODIFIED
29-Jun-2012 29-Jun-2012 MODIFIED
12-Feb-2010 (import)