They use their sharp, piercing mouthparts, called stylets, to suck the sap out of leaves and new-growth branches, and then they secrete a sticky waste substance called honeydew. While aphids feast on all garden plants, there are many species of aphids that are more likely to affect food crops and fruit trees. (School of Biological Sciences, East Anglia University, Norwich, Norfolk NR4 7TJ (UK)) Freshly laid aphid eggs are pale yellow to green, but soon darken to shiny black. This is indeed Depanosiphum platanoidis - brown forms are more common later in the season. It … Aphids evolved feeding on trees but diversified to colonise herbaceous plants, mosses and ferns. Very few nymphs are present at this time of year, because most of the adults undergo a reproductive aestivation or diapause.Note the globules of honeydew (sugar-rich aphid excretion) on the leaf - unlike some aphid species, Drepanosiphum platanoidis is not attended by ants feeding on this secretion. The first image shows a syrphid larva found feeding on Drepanosiphum platanoidis in October. Since the disease typically attacks American sycamore trees, try planting a London plane tree or an Oriental plane tree, which are usually resistant to sycamore anthracnose. The plant on which overwintering eggs are laid is often a tree or shrub. (1980). The antennae are brown, and the siphunculi are pale with a brown tip. The sycamore tussock moth. Relative importance of insect + wind (control) and wind pollination in seed set in protogynous and protandrous sycamore at Murlough Bay, Co. Antrim. Family Platanaceae (Plane tree family) Plant identification. 4). Latin Name: Acer pseudoplatanus; Native Words: Old Irish Scots Gaelic Old English Welsh (marsanwydd) eastern Celtic (); Ogham Sign: n/a ; Height when Mature: 35m; Height after 10 years:; Sycamore Tree Botanical Description:. For example, in Britain silver birch (Betula pendula) supports 13 species, each feeding on a different part of the tree. Aphids on the leaf buds of a sycamore (acre) tree On July 4th, 2019, a car stands on a street in Berlin-Weissensee (Pankow district) under a blossoming linden tree. Plantanus acerifolia, and occurs wherever sycamores grow. Pest description and damage Several species of aphids can become a problem for sycamores. Again not great photos (though I have to add that I now have a new and excellent camera, though the operator is unchanged). Drepanosiphum platanoidis is common or abundant on sycamores wherever they are grown in Europe, central Asia, north Africa, Australia, New Zealand, USA and Canada. Aphids on maple and sycamore. There is an ongoing dispute as to whether Sycamore is a native British tree, but is now by far our commonest species of maple. Other predators include the two-spot ladybird (Adalia bipunctata), lacewing larvae (Chrysopa carnea) and wood ants (Formica rufa). Found on Tayberry, 12/9/2014. Flowers or fruit can become distorted or deformed due to feeding aphids. In the great majority of cases, identifications have been confirmed by microscopic examination of preserved specimens. Although sooty mold is not a bug, ... Often seen on London Plane/Sycamore trees in the city (Platanus acerifolia), it is generally cosmetic and not fatal. The picture above shows a young nymph of Drepanosiphum platanoidis on a sycamore bud in March. Immature Drepanosiphum platanoidis (see first picture below) are pale green with long cylindrical siphunculi and red eyes. This ovipara is dark green with dark bands, but colour varies from light green to dark brown and bars may be present or completely absent. By October most of the sycamore aphid population is comprised of winged males and oviparous females and mating pairs can often be seen on the leaves, as shown above. Hatching is well synchronised with the average time of bud burst, so the young nymphs are able to exploit highly nutritious young foliage as it emerges from the buds. This aphid species is not known to reproduce on any tree other than sycamore, but perhaps it can use other plant species as a reserve host to keep them alive before the alatae migrate to another sycamore tree. This is indeed Depanosiphum platanoidis - brown forms are more common later in the season. First generation adults (which are always green) cannot readily be induced to produce red offspring, whereas later generations are more easily induced to do so. Spray the tree until the insecticide drips from the foliage. At this time the petioles are a poor source of food and are not colonized. The action of this restraining mechanism and the cool conditions in spring result in the red forms first appearing in summer. Sycamore Trees Facts & Information. Whilst we make every effort to ensure that identifications are correct, we cannot absolutely warranty their accuracy. One-half or more of the foliage may be eaten by the caterpillars. Note: Drepanosiphum platanoides is an incorrect, but commonly used, synonym for Drepanosiphum platanoidis. So aphids have a problem here. Just checking you are happy that this one is another common sycamore aphid. Sycamore Lace Bug: Sycamore lace bug (Corythucha ciliata) gets its name from the lacy pattern seen on the adult’s wings, head, and thorax (chest region).The adult is small, 1 /8 inch in length and brown to black in color. Aphids that are knocked off of a tree are unable to return. In addition to cosmetics, honeydew may become a sticky nuisance when it falls on … Aphids also transmit virus diseases such as broad bean wilt. Another specialized parasitoid is the aphelinid Aphelinus thomsoni which produces a black mummy shown in the second image. The Not all aphids remain on the same tree throught their life. But it seems to fit anyway. Again, I cannot identify the plant leaf, though I did try. Of those aphid species, Baker (2015) lists 8 as occurring in Britain (Show British list). The abdomen is usually pale green, although there is a less common red form which occurs from summer to autumn. Apologies, I obviously did not look thoroughly on the page, and missed the last bit. Nearly all plant life attracts aphids. Egg mortality varies from 65-85% with the greatest mortality in late winter (Wade, 2002). I don't recognise the leaf - wish I had kept the uncropped originals. Predators of sycamore aphids are also numerous. 05), and the seasonal pattern differed in that the aphids remained at low densities after the summer decrease ( Fig. are planted to create fast-growing screens for home landscaping. In addition to temperature, overcrowding is also thought to induce the development of red forms. In addition to cosmetics, honeydew may become a sticky nuisance when it falls on decks, cars, or other landscape surfaces. Sycamore is a fast-growing deciduous tree reaching 30 to 40 feet tall. In summer the sycamore aphid's responses to gravity, light direction and intensity and unidentified features of a leaf's surface result in the aphid settling and feeding on the undersurface of leaves. Heavy aphid infestations can deposit honeydew on lower leaves and objects beneath trees, such as cars and sidewalks. The forewing has no black spot at the tip nor one at the outer end of the pterostigma; the pterostigma is defined by two longitudinal brown stripes. Halisidota harrisi;, feeds on sycamore and London plane trees. Description. How to Get Rid of Aphids on Trees. In addition, we have quite a lot of lacewings and larva, and recently I have counted as many as 50 ladybirds around the place. All adult viviparae are alates. Arboricultural Journal: Vol. Aphids tend to be small (0.0625 to 0.125 inch long), oval to pear-shaped, soft-bodied insects with piercing-sucking mouthparts. Any errors in identification or information are ours alone, and we would be very grateful for any corrections. However, a small percentage (up to 17%) of the summer adults are red rather than green (see picture below). Relative Disease Susceptibility and Sensitivity to Sulfur, Diagnosis and Control of Phytophthora Diseases, APHIS List of Regulated Hosts and Plants Proven or Associated with Phytophthora ramorum, Plants Resistant or Susceptible to Armillaria Root Rot, Verticillium Wilt in the Pacific Northwest, Plants Resistant or Susceptible to Verticillium Wilt, Plants Susceptible to Sclerotinia sclerotiorum, Potential Impact of Cyanobacteria on Crop Plants, Management of the Cyanobacterium Nostoc in Horticultural Nurseries, Impatiens Necrotic Spot: New Name, Same Threat, Virus Certification Program for Fruit and Ornamental Trees, Care and Maintenance of Wood Shingle and Shake Roofs, Winter Injury of Landscape Plants in the Pacific Northwest, Recognizing Sapsucker Damage on your Trees, Key to Nutrient Deficiencies in Vegetable Crops, Key to Nutrient Deficiencies of Deciduous Fruit and Nuts, Use of Disinfestants to Control Plant Pathogens, Current Status of Biological Weed Control Agents in Idaho, Oregon, and Washington, Biological Control Agents and Their Roles, Restricted-use Herbicides in Idaho, Oregon, and Washington, Testing for and Deactivating Herbicide Residues, Herbicide Effectiveness on Weeds in Grass Seed Crops, Dry Bean East of the Cascades - Phaseolus spp.
Sycamore Aphid - Drepanosiphum platanoidis. Blackman & Eastop list 12 species of aphid as feeding on European sycamore (Acer pseudoplatanus) worldwide, and provide formal identification keys (Show World list). 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). Re your images of sycamore aphid - they are indeed Drepanosiphum platanoidis, in fact a MALE of the species. Red adults give birth only to red nymphs so that within the population clones of red aphids develop. Feeding damage to trees is usually minor, but can compromise the vigor of the host, if aphid populations are high. determine whether sycamore aphids show a preference for veins of a particular size and whether this could affect the availability of space to the aphid. Sycamores have thin, peeling reddish-brown bark and seed balls that drop in spring. Little more is known about the red form of the sycamore aphid but it seems to be more active than the green form, possibly develops faster, and is possibly better adapted to withstand the high temperatures and overcrowded conditions prevalent in summer. Two types of flights have been distinguished for sycamore aphids: trivial flights and migratory flights (Dixon, 1969). Check your trees for aphid infestation by looking at the undersides of leaves. Annual treatments may be required. I have 3 trees infested with aphids and it seems like it happens every year only on these particular trees although there are many other and different trees around them. The leaves are eaten by caterpillars of a number of moths, including the sycamore moth, plumed prominent and maple prominent. Call an arborist, or tree expert, to help you diagnose and treat the disease. Both types are more common when there are high densities of fourth instar nymphs. Color varies but most aphids tend to match host plant coloration. Adults survive the winter under peeling bark of the sycamore tree. Species; Additional images; Click here to support NatureSpot by making a donation - small or large - your gift is very much appreciated. Nigel Gilligan, 17 March 2014, another Drepanosiphum platanoidis maybe. Not all aphids remain on the same tree throught their life. Two types of flights have been distinguished for sycamore aphids: trivial flights and migratory flights (Dixon, 1969). Yep, that's Drepanosiphum platanoidis - often extraordinarily abundant, but then some years it does really badly and the other common sycamore aphid Periphyllus testudinaceus is dominant. Many aphids, especially those on fruits and vegetables, go through an annual cycle that involves two or more host plants. Aphids are a concern for your trees because they are sapsuckers and like to feed on your trees’ foliage, especially leaf buds and tender new shoots. Aphids are small sap-sucking insects and members of the superfamily Aphidoidea.Common names include greenfly and blackfly, although individuals within a species can vary widely in colour. Both types are more common when there are high densities of fourth instar nymphs. Aphids feed on sycamore trees and a few other tree species (Shutterstock) The warm, still weather of May is great for us and for many plants and animals, but some of these creatures are a nuisance. Blackman & Eastop list 96 species of aphid as feeding on Acer (Maples and Sycamores) worldwide, and provide formal identification keys.. About sixteen of these are known to occur in Britain. The common sycamore aphid is found on the undersides of leaves of sycamore (Acer pseudoplatanus). Sycamore aphid, Drepanosiphum platanoidis Koch. To kill them, you must first learn how to spot them. If you see an ant colony or lots of ants near your aphid-infested plants, try to get rid of the ants by using a sticky band wrapped around a tree or other type of ant trap. and may be used instead. and may be used instead. Thanks for the confirmation - got one right, at least! The ‘Yarwood’ variety of Sycamore is more resistant. Pests: Aphids will suck the sap from sycamores. A few other aphids may be found on sycamore leaves (Drepanaphis spp., Periphyllus spp.) They are also usually green as in the picture below. Aphids produce honeydew that supports growth of a black sooty mold fungus. They are aggregated on rough bark, with competition among oviparae for the best oviposition sites. Sycamore is attractive to aphids and therefore a variety of their predators, such as ladybirds, hoverflies and birds. A few other aphids may be found on sycamore leaves (Drepanaphis spp., Periphyllus spp.) I wondered whether it was one of the non-illustrated species in that area. 1, pp. Drepanosiphum acerinum, which has one or two short brown bars on abdominal tergites 4-5 only). Aphids, Ants and Sooty Mold. The aphids that develop from the overwintering eggs in spring (the fundatrices) are always green often with bold black transverse bars on the abdomen. Sycamore trees have serrated lobed leaves that resemble maple leaves with three to five lobes. Try a hardier species. And we have plenty of sycamore here anyway. The second image shows an anthocorid bug Anthocoris nemorum attacking a mummy caused by yet another specialized parasitoid - either Monoctonus pseudoplatani or Trioxys cirsii. In the spring, the eggs hatch and the aphids feed on the young foliage. Ants and aphids have a symbiotic relationship. Sycamore lace bugs feed on … The end of the abdomen of the ovipara is extended like an ovipositor. When aphids feed on trees, their honeydew can drop onto cars, outdoor furniture, driveways, and so on. We have all the usual problems with leaf fall, seeds, aphids, sap, blocked gutters, lack of … Sycamore aphids aggregate on particular leaves, but maintain a minimum space between each other (Kennedy & Crawley, 1967) giving the spaced-out pattern. I think this one is Drepanosiphum platanoidis.