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Genus Hayhurstia

Chenopodium aphids

On this page: 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 the Hayhurstia genus. It 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 species) and potatoes (Solanum tuberosum).

 

Hayhurstia atriplicis (Chenopodium aphid)

Hayhurstia atriplicis live on orache (Atriplex) or goosefoot (Chenopodium) inside yellowish pseudogalls (see first picture below). The pseudogalls are formed by rolling the leaves upwards. Hayhurstia atriplicis apterae are green covered with a white wax powder (see picture below). 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 an adult aptera of Hayhurstia atriplicis is 1.5-2.9 mm.

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

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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).

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References

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