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Bronze oxeye aphidOn this page: Identification & Distribution Other aphids on the same host
Identification & Distribution
Adult apterae of Uroleucon telekiae (see two largest aphids in first picture below) are reddish black to dark bronze, with antennae black except for segment III and the basal part of segment IV, black siphunculi and pale or slightly dusky cauda. The tibiae have a pale middle part (cf. Uroleucon inulicola, which has entirely black tibiae). The antennae are 1.05-1.45 times as long as the body, with the terminal process 5-6 times as long as the base of antennal segment VI. There are 6-25 secondary rhinaria on antennal segment III, which are very variable in size and scattered on the basal 0.33-0.5 of theat segment. The rostrum reaches behind the hind coxae. The apical rostral segment is 1.50-1.67 times as long as the second hind tarsal segment. First tarsal segments have 3,3,3 hairs (fore,mid,hind). Siphunculi are 0.32-0.37 times the body length, 2.0-2.4 times the length of the cauda, with the apical 0.17-0.25 reticulated. The cauda is distinctly pointed with 20-26 hairs. Body length of adult Uroleucon telekiae apterae is 3.0-4.6 mm.
Images above copyright Donald Hobern, no rights reserved.
The alate Uroleucon telekiae is dark bronze. The antennae are completely dark, 1.0-1.3 times body length, and with a terminal process about 5.5 times the base of antennal segment VI. There are 42-55 secondary rhinaria distributed over almost the entire length of antennal segment III. The siphunculi are 2.4-3.0 times the caudal length. Fourth instars (see second picture above) appear to have a dusky tip to the cauda.
Uroleucon telekiae is monoecious on the apical parts of yellow oxeye (Telekia speciosa). Feeding by the aphid causes deformation of the young leaves. It is holocyclic, with oviparae and alate males occurring in October. The species is found over much of Europe extending into Turkey, but not in northern Europe nor in Britain. It's presence in some countries (e.g. Denmark) almost certainly results from introduction of infested plants by the plant trade.
Other aphids on the same host
Uroleucon telekiae has been recorded from 1 Telekia species (Telekia speciosa).
Blackman & Eastop list 4 species of aphid as feeding on Telekia speciosa worldwide, and provide formal identification keys (Show World list). Of those aphid species, Baker (2015) lists 3 as occurring in Britain (Show British list).