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Calaphidinae : Panaphidini : Tinocallis platani
 

 

Tinocallis platani

Dark-shadowed elm aphid

On this page: Identification & Distribution Other aphids on the same host

Identification & Distribution

All viviparae of Tinocallis platani are winged. Alatae are greenish-white to yellow (see two pictures below) with extensive black-brown markings on the head, thorax, abdomen and forewings. The head and prothorax are yellow with brown longitudinal stripes. The remainder of the thorax is brown (cf. Tinocallis takachihoensis,which has the head and pronotum wholly black). The antennae are pale yellow with the apices of segments dark, and are 0.78-0.94 times the body length. The antennal terminal process is 0.23-0.25 times as long as the base of segment VI, and there are 16-26 slit-like secondary rhinaria on segment III. The head and pronotum lack any dorsal processes. The apical rostral segment is 1.2-1.5 times the length of the second hind tarsal segment.

First image above copyright Mihajlo Tomić, second image above Alexis Orion,
both under a creative commons licence.

The forewing has the media and anal vein (Cu1b) thickly and rather evenly shadowed with fuscous, basally as well as distally. The cubitus vein (Cu1a) is also often partially shadowed (cf. Tinocallis nevskyi, Tinocallis ulmifolii & Tinocallis saltans, which do not have forewing veins shadowed with fuscous). There is no pigmented bridge between the media and vein Cu1a (cf. Tinocallis zelkowae, which has a pigmented bridge between the media and apical part of vein Cu1a). There are rather short finger-shaped spinal tubercles on abdominal segments I & II. The fore and middle legs are pale yellow, whilst the hind legs have most of the femora and proximal part of the tibiae black. The siphunculi are stump-shaped, black, with a dark basal sclerite. The body length of Tinocallis platani alatae is 2.0-2.2 mm. Immature Tinocallis platani (see picture below) are pale yellow with paired dusky spinal and marginal tubercular processes on the abdominal dorsum.

Image above copyright Alexis Orion under a creative commons licence.

Tinocallis platani is found on the undersides of leaves of elm (Ulmus spp.), especially Russian elm (Ulmus laevis) and American white elm (Ulmus americana). Large numbers may be found on a single tree, even in areas where the species rare. Sexuales (oviparae and alate males) have been found on Russian elm in Europe in October. The dark-shadowed elm aphid is found throughout Europe, across Asia to eastern Siberia and China, and has been introduced into western North America.

 

Other aphids on the same host

Tinocallis platani has been recorded on 5 species of elm (Ulmus americana, Ulmus glabra, Ulmus laevis, Ulmus minor, Ulmus procera).

Acknowledgements

We are grateful to Mihajlo Tomić and Alexis Orion for making their pictures available for use under creative commons licences.

We have used the keys and species accounts of Richards (1967), Heie (1980-1995) and Quednau (2001) along with information from Roger Blackman & Victor Eastop in Aphids on Worlds Plants. We fully acknowledge these authors and those listed in the reference sections 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

  • Quednau, F.W. (2001). World review of the genus Tinocallis (Hemiptera: Aphididae, Calaphidinae) with description of a new species. The Canadian Entomologist 133, 197-213. Full text

  • Richards, W.R. (1967). A review of the Tinocallis of the world (Homoptera: Aphididae). The Canadian Entomologist 99(5), 536-553. Abstract