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Genus Ceruraphis

Viburnum- sedge aphids

Species Overview: Genus Ceruraphis  Ceruraphis eriophori 

Genus Ceruraphis [Macrosiphini]

Small to medium-sized dark aphids the adult viviparae of which may be winged or wingless. The antennal tubercles are undeveloped or very weakly developed, not projecting beyond convex middle part of front of head in dorsal view. The siphunculi are entirely dark.

A small genus of only 4 species. They retain a sexual stage in their life cycle and host alternate between Viburnum (Adoxaceae) as the primary host and Sedges (Cyperaceae) as the secondary host. They are not attended by ants.

 

Ceruraphis eriophori (Wayfaring tree - sedge aphid)

This is a medium-sized oval aphid. The dorsum of the fundatrix has extensive dark sclerotization. The siphunculi of all forms are black and are more than twice as long as the cauda.

The wayfaring tree - sedge aphid host alternates between wayfaring tree (Viburnum lantana) and other Viburnum species and various sedges (Carex spp.). On wayfaring tree the aphid lives in a gall caused by the leaves shriveling and curling downwards.

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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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