Phyllocoptes goniothorax affecting the leaf edges of Hawthorn. Woodford Halse. 17 July, 2014 |
Hawthorn is attacked by a range of flies, moths, mites and fungi. Here a mite, Phyllocoptes goniothorax, has been at work, causing the formation of leaf rolls over about 40% of the leaf's edge.
Hogweed showing the mines of Phytomyza spondylii. Woodford Halse 17 July, 2014 |
In a small glade hogweed was also attack, this time from an agromyzid fly, Phytomyza spondylii. It seems clear that plants with the most nutritious leaves are most subject to attack, thus nettles, despite their obvious defences, are plagued by nibblers, borers and browsers.
A plant of wood avens, Geum urbanum, was displaying the galls of another mite, Cecidophyes nudus. These galls are in their early stages; they will swell to become far more disfiguring later.
Notocelia uddmanniana. Woodford Halse. 17 July, 2014 |
Many insects inadvertently carry ticks, mites etc. In fact, for many non-flying creatures such as false-scorpions, this is an important means of dispersal, when it is known as phoresy.
Notostira elongata carrying a tick. Woodford Halse, 17 July, 2014 |
An unfortunate bug, bearing a tick, was swept up by my net from a grassy glade. The tick will probably feed on the host until gorged, and then drop off. The host, in this case Notostira elongata, may be little the worse for the experience.
Notostira elongata in more detail. Note the antennae, more or less the same length as the body. Woodford Halse, 17 July, 2014 |
Notostira elongata is ubiquitous in grassland during the summer and a single sweep of a net may often secure a dozen or more. Its success may relate to the fact that it has two generations a year. The picture shows how its coloration will allow it to blend in with grass stems.
The area can hardly be described as flower-rich and Tufted Vetch, Vicia cracca, provided one of the few splashes of bright colour, but I set off home with a large haul of insects to be trawled through, so I was well pleased with the morning's results.
Tufted Vetch, Vicia cracca. Woodford Halse, 17, July, 2014 |
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