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| ... banks of the water and feed on micro-organisms. The larvae are sepia-coloured, hairy, and 25 - 26 mm in length. The width of the body, at the 6th or 7th segment, is about 8 mm. The encrusted ocelli are at the front of the relatively small head. The antennae consist of 7 segments. The larvae overwinter twice in water and leave those on a plant stem, 2 to 3 years after they have hatched from their eggs. The new generation of black-lined skimmers hatch at the end of May. | | |
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| Adult Rutpela maculata reach body lengths of 14 - 20 mm. Their bodies are elongated and slimly built. Their base colour is black. The antennae are alternately black and yellow. The wing covers (elytra ) are yellow, usually with black markings towards the front. There are spots / patches on the wing tips, more or less associated with black crossing bands. The markings and colouration of the... | | |
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| There are specimens whose elytra are completely yellow and those in which they appear almost black. The legs of these beetles are also alternately black and yellow. These colour patterns, as well as those on their antennae, occuronly in the spotted longhorn. By rubbing their wing covers on their hind legs they can produce chirping sounds. | | |
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| ...here are many species which are bright green, red or yellow in colour and with various patterns which create a partial resemblance to Vespidae (wasps), but Tenthredinidae are not able to sting. The so-called "wasp waist" is absent. Their antennae can have 7 - 15 segments, but mostly have 9 segments. | | |
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| ...ris reach body lengths of 12-14mm and are therefore considerably larger then the males who only reach a length of 9 - 12 mm. The bodies of these specimens are bright red and black in colour. The head, chest (thorax) and compound eyes are black. The antennae are yellowish and comprise 7 or 9 segments. The abdomen is black and shiny and has a large reddish-yellow or yellow stripe in the middle of its upper surface. It is longer and wider in the females than in the males. The wings are milky-transparent. ... | | |
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| ...females lay their yellowish to reddish-brown eggs, individually or in small groups, on the food plants of their larvae. The larvae are yellowish after hatching and resemble caterpillars. They have 8 small pairs of legs attached to the abdomen. Their antennae have 4 - 5 segments. The larvae of Tenthredo campestris feed on the leaves of various herbaceous plants, trees and shrubs. Their food of preference is ground-elder (Aegopodium podagraria). When disturbed, the larvae curl into a "S" and re... | | |
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| Adult Amblyteles armatorius reach body lengths of 12 - 16 mm. Their bodies are strongly built, slender, and predominantly black and yellow in colour. Their antennae are about 9 mm in length. Their compound eyes have a grey grey-brown to dark grey sheen. There are three red-brown simple eyes (ocelli) near the top of the forehead. The upper surface of the chest section is black and appears to be lightly dusted be... | | |
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| The antennae are black. An important characteristic of this species is the remarkably large and wide 2nd segment, which is about five times longer than it is broad. The 3rd and 4th segments are thready and thin. The 3rd segment is bright yellow at its base. The ... | | |
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| The head is orange-red at the front. The antennae are long and threadlike and the first 3 segments are brownish red. The other segments are black. The mouthparts (mandibles) are red in colour, as also as parts of the neck. The front part of the chest is orange on the upper surface (neck plate). The... | | |
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| Adult common green capsid reach body lengths of 5 - 7 mm. They are bright green and are covered in fine, white hair. Their antennae are remarkably long. The upper surface of the pronotum is slightly rough with some indentations. On the wing membranes, green veins are visible. The tibia have light brown spines. | | |
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