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| Hylaeus | | ...ays black and hairless , which rules out immediate determination of Hylaeus species in the field. . Only three species have red as the base colour of their abdomens.
It is typical for all Hylaeus to have a clearly visible marking on their face, yellow or yellowish white in colour, but on the females this may be reduced to a few points at the sides or to narrow vertical stripes on the anterior eye margins , or this marking can be completely absent. The markings on the face vary from species to specie... | | |
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| The larvae of rose leafhoppers are cream coloured. Rose leafhoppers and their larvae pierce the leaf tissue and suck plant juices from the underside of rose petals. The rose plants initially show a fine, white and yellow mottling on the leaves. Rose leafhoppers usually start sucking along the leaf veins and later spread out onto the whole leaf. After a while the leaves of infected plants are densely dotted with numerous pale stains and they then wither and fall off.... | | |
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| Murky-legged Black Legionnaire | | ...eyes and short, strong, dark sensors. Their chest is slightly hairy. At the rear edge of the scutellum areoften a number of curved spikes, hence the family name "soldier flies". Their halteres are whitish in colour, their legs are long and yellow and their feet are dark. The abdomen of the murky-legged black legionnaire appears flattened.
The murky-legged black legionnaire lives in humid forests or in forest edges. It can be seen in early summer on sunlit leaves, flying, or sitting i... | | |
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| The latter have transparent wings, while the former have wings with zigzagging dark stripes. Another typical characteristic is the marking on the upper surface of the abdomen. The several segments formed through yellow rings are clearly visible. The marking on the second segment resembles a chalice. The base of the hind femur is a yellowish colour. | | |
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| ... mm. Their bodies are very slender and shiny. The abdomen of the females is red at the sides and (in the shape of a lance) leads backwards. The abdomen of the male is narrow, rounded at the end and dark purple in colour. The legs of the females are yellow, while those of the males are dark. | | |
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| The head of the bee wolf is big and visibly wider than the front section of the body. The antennae are short and thicker in the middle and point forward during flight. An important characteristic of these insects is the whitish-yellow marking on the forehead, which sometimes resembles a twice or trice jagged crown. The crown-like marking differs on each bee wolf. The males have large mandibles on the head to mark out territory and attract females in the mating season. | | |
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| ...each body lengths of 8-14 mm, the females being smaller than the males. Their bodies have a black base colour. From March, bright auburn hair begins to grow on the chest (thorax) and abdomen. The colouration varies, up to May, from golden to straw yellow. The undersides of the head and body are covered in black hairs, though the males have only a little hair on the abdomen. | | |
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 | | Yellow swarming fly eating from a Bibionidae | | >> Picture |
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