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Drepanococcus chiton

Scientific Name
Drepanococcus chiton
Scientific Author
(Green)
Taxonomy
(Hemiptera: Coccidae)
Pest Status
0 Unknown
Status
0 NZ - Unknown
Reliability
High
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Diagnostic Images (3)
Diagnostic Notes
Description from Williams & Watson (1990)

Adult female, slide-mounted, up to 3.8 rom long and 2.9 rom wide; antennae 285-410 µm long, each with 8 segments, most segments distinctly longer than wide, but varying. Anal plates sclerotised, each with 3 large conical setae on inner margin and 1 on posterior tip. Stigmatic setae each with a distinct setal collar at the base, the collar often sclerotised. Marginal setae each with a thick base and concave sides, height in relation to width of base rather variable; setae close­set, with bases almost touching, in a single to triple row around margin, interrupted by eyes and where stigmatic furrows cross margin to reach stigmatic setae on dorsum.

Dorsum usually membranous, with irregular rows of minute ducted pores and simple pores outlining bare areas; a few tiny conical setae sometimes present. Large, sclerotised pores present on dorsum, usually in 2 loose clusters on either side of the mid-line opposite abdominal segment IV or V; these pores often sparsely scattered further forward over abdomen and thorax, never present near margins.

Ventral surface with fine flagellate setae present, mostly just inside the margin. Tubular ducts present, apparently all of one type but these varying in size on different parts of the body; each duct with a membranous tube, a well-sclerotised, deep cup at inner end and a fine filament about 2/3rds length of duct, with a glandular end.

Biology

Buckley & Gullan (1991) showed, in Papua New Guinea, that attendance by the aggressive ant, Oecophylla smaragdina (Fabricius), reduces the rate of parasitization.

General Remarks

Good description and illustration of the adult female given by Tao et al. (1983), Tang (1991) and by Williams & Watson (1990).

Keys

Green 1909a: 287 (female).

More Information
Specimen Contact
New Zealand Arthropod Collection
Author
Rhode, B.E. & Crosby, T.K.
Created
25/06/2013 08:51 AEST
Last Updated
23/03/2014 22:45 AEST
Citation
Rhode, B.E. & Crosby, T.K. (2013) Drepanococcus chiton (Drepanococcus chiton) Updated on 3/23/2014 10:45:25 PM Available online: PaDIL - http://www.padil.gov.au.
Image Use
Free for use under the Creative Commons Attribution 3.0 Australia License

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