InfluentialPoints.com
Biology, images, analysis, design...
Aphids Find them How to ID AphidBlog
"It has long been an axiom of mine that the little things are infinitely the most important" (Sherlock Holmes)

 

 

Genus Hayhurstia

Chenopodium aphids

Species Overview: Genus Hayhurstia  Hayhurstia atriplicis 

Genus Hayhurstia [Macrosiphini]

Hayhurstia are medium-sized aphids, with very small slightly swollen siphunculi. The siphunculi have a small flange and are distinctly shorter than the cauda. The cauda is finger-shaped.

There is only one species in this genus. This feeds on members of the amaranth family (Amaranthaceae). They have a sexual stage in the life cycle overwintering as eggs, but there is no host alternation. The single species is thought to be an important vector of plant viruses. These viruses result in considerable yield loss of peppers (Capsicum spp.) and potatoes (Solanum tuberosum).

 

Hayhurstia atriplicis (Chenopodium aphid)

Hayhurstia atriplicis apterae are green covered with a white wax powder.

Their siphunculi are very small and slightly swollen with a small flange, and are distinctly shorter than the finger-shaped cauda. The body length of Hayhurstia atriplicis is 1.5-2.9 mm

 

They live inside yellowish pseudogalls (see picture below) which are formed by rolling the leaves upwards.

Hayhurstia atriplicis feeds on many different species of plants in the goosefoot family, especially Atriplex and Chenopodium. In temperate climates it has a sexual stage in the life cycle overwintering as eggs, but there is no host alternation. Hayhurstia atriplicis is found widely in Europe and Asia, north and central Africa, and in North and central America.

Read more... 

Acknowledgements

We have made provisional identifications from high resolution photos of living specimens, along with host plant identity. In the great majority of cases, identifications have been confirmed by microscopic examination of preserved specimens. We have used the keys and species accounts of Blackman & Eastop (1994)  and Blackman & Eastop (2006)  supplemented with Blackman (1974) , Stroyan (1977) , Stroyan (1984) , Blackman & Eastop (1984) , Heie (1980-1995) , Dixon & Thieme (2007)  and Blackman (2010) . We fully acknowledge these authors as the source for the (summarized) taxonomic information we have presented. Any errors in identification or information are ours alone, and we would be very grateful for any corrections. For assistance on the terms used for aphid morphology we suggest the figure  provided by Blackman & Eastop (2006).

Useful weblinks 

References

  •  Blackman, R.L. & Eastop, V.F. (2006). Aphids on the world's herbaceous plants and shrubs. Vols 1 and 2. John Wiley & Sons.