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Calaphidinae : Panaphidini : Tinocallis ulmiparvifoliae
 

 

Tinocallis ulmiparvifoliae

Wax-spotted elm aphid

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

Identification & Distribution

All adult viviparae of Tinocallis ulmiparvifoliae are winged. Alatae (see dorsal views in two pictures below) are pale bluish-green, with paired spinal & pleural longitudinal white wax stripes on the head and pronotum, a single spinal white stripe on the pterothorax, and white wax spots on the dorsal abdomen.

First image above copyright glmory under a public domain (CCO) licence.
Second image above copyright Stephen Thorpe under a creative commons licence.

Their antennae are somewhat shorter than the body, and have (11-17) 22-26 secondary rhinaria on segment III. The head bears 3 pairs of dorsal processes (see lateral views in two pictures below). Each tubercle has an apical hair. The most posterior pair of tubercles is the longest at 1.5-2.0 times as long as wide (cf. Tinocallis nevskyi, Tinocallis platani, Tinocallis saltans & Tinocallis takachihoensis, which have no dorsal processes on the head). There are two pairs of stout dorsal tubercles on the pronotum, and one pair on the hind part of the mesonotum. The abdomen has two pairs of tubercles on the basal part. The tips of abdominal, and to a lesser extent thoracic, tubercles are frequently dark. The wings are slightly clouded at the end of each oblique vein and its branch, and also at the base of the stigma. The siphunculi are pale, wider than long, expanded basally and a little constricted about the middle. The cauda is knobbed and the anal plate is deeply bilobed. The body length of Tinocallis ulmiparvifoliae alatae is 1.6-2.7 mm.

First image above copyright glmory under a public domain (CCO) licence.
Second image above copyright Stephen Thorpe under a creative commons licence.

Immatures (a newly born nymph is visible in the first picture shown on this page) are green with paired dusky spinal and marginal tubercular processes on the abdominal dorsum.

Tinocallis ulmiparvifoliae is monoecious holocyclic on Chinese elm (Ulmus parvifolia). Oviparae have been recorded but not, so far, males. The wax-spotted elm aphid is native to Japan, Korea, China and Taiwan, but has been introduced to Australia, New Zealand, USA (Florida & California) and Europe (Britain, Italy and Spain).

 

Other aphids on the same host

Tinocallis ulmiparvifoliae has been recorded on 2 species of elm (Ulmus minor, Ulmus parvifolia) and possibly on Ulmus glabra & Ulmus laciniata.

Acknowledgements

We are very grateful to Jesse Rorabaugh (glmory) and Stephen Thorpe for making their pictures of Tinocallis ulmiparvifoliae available for use.

We have used the keys and species accounts of Takahashi (1935), Richards (1967), 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

  • Takahashi, R. (1935). Additions to the aphid fauna of Formosa (Hemiptera), III. The Philippine Journal of Science 56(4), 499-507.