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Potato Aphid

Scientific Name
Macrosiphum euphorbiae
Scientific Author
(Thomas)
Taxonomy
(Hemiptera: Aphididae)
Status
Exotic Species Occurrence in Australia
Reliability
High
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Diagnostic Images

Apterous vivipara cauda and siphunculi
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Caption
Canada - New Brunswick, Queens, Jemseg, July 1993, Maw and Foottit, host Sonchus asper
Source
Ken Walker Museum Victoria
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Diagnostic Images (7)
Other Images (7)
Diagnostic Notes
Apterous adult: Body 1.7 - 3.6 mm long, spindle-shaped or pear-shaped, usually some shade of green but sometimes yellowish, pink or magenta, often rather shiny. Eyes  distinctly reddish. Legs, siphunculi and cauda mainly same colour as body, but siphunculi often darker towards apices; antennae usually only dark apically, but sometimes almost entirely dark. Antennae have two to six secondary sensoria on basal half of segment three. Siphunculi have  slight apical constriction with several rows of polygonal reticulation in constricted areas, and are relatively long, being approximately 6 to 11 times as long as wide.

Alatae: Body 1.7-3.4 mm long, with pale greenish to yellow-brown thoracic lobes, and usually only the antennae and siphunculi noticeably darker than in the aptera. Antennae have ten to eighteen secondary sensoria on the basal third of third segment.

Main distinguishing characteristics of this species are the length of the reticulated area on the siphunculi, the number of sensoria on the third antennal segment, and the tapering shape and presence of lateral hairs on the cauda.

More Information
Author
John Wainer and Mali Malipatil
Created
07/05/2007 04:27 AEST
Last Updated
26/06/2007 13:28 AEST
Citation
John Wainer and Mali Malipatil (2007) Potato Aphid (Macrosiphum euphorbiae) Updated on 6/26/2007 1:28:43 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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