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Ericaphis ericae

Cross-leaved heath aphid

Identification & Distribution 

Identification & Distribution:

Adult apterae of Ericaphis ericae are green or brownish green with the tips of the antennae and legs black. It is a small species with a body length of 1.1-1.7 mm.

The hairs on the third antennal segment are conspicuous (although sadly not on our micrographs of Ericaphis ericae in alcoohol), the longest of these hairs are 0.6-1.0 times the basal diameter of that segment. The fused last two segments of the rostrum are 1.3 to 1.7 times longer than the second hind tarsal segment (see second micrograph below).

The first tarsal segments usually have three hairs. Ericaphis ericae siphunculi have a large flange at the end, clearly visible in the micrographs of clarified mounts of an aptera (below first) and an alate (abdomen, below second).

Micrographs of clarified mounts  by permission of Roger Blackman, copyright AWP  all rights reserved.

Cross-leaved heath aphids live without host alternation on Erica species, especially cross-leaved heath (Erica tetralix), feeding on flowers and shoot apices. Oviparae and apterous males are produced in September and October. Blackman (2010) ) notes that Ericaphis ericae is often overlooked because of its small size and cryptic colouration.  It is found in Britain and continental Europe, east to Poland and south to Spain and Portugal.

Acknowledgements

Our particular thanks to Roger Blackman for images of his clarified slide mounts.

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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