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Keyword: Yellow |
Overview - a b c d e f g h i j k l m n o p q r s t u v w x y z | |
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| The yellow swarming fly reaches body lengths of up to 2 mm. Its body is yellow with black markings. Its head is very broad and there is a round black spot on a yellow background between its compound eyes. The spot is located in a wedge-shaped strip of dark hair, which tapers towards the front. On the yellow thorax are 3 wide, black stripes lengthwise. The stripe in the middle reaches from the neck to the scutellum. The outer stripes are shorter. Beside each outer stripe is one more black stripe which is much thinner and only half as long. The yellow swarming fly’s wings are transparent and extend far beyond the end of its abdomen in resting position. The wings are well developed, unlike those of other frit fly species. The halteres are white. The scutellum is yellow and has no markings. On the upper surface of the abdomen, which is yellow, are 4 black crossways. The legs are a weak brownish-yellow colour.
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| | Taurus fly | ...traorder Asilomorpha, Nemestrinoidea and to the family Acroceridae. It belongs to the genus Cyrtus.
The Taurus fly can be found throughout southern Europe, but is rare. It is medium-sized, compact and almost spherical in shape. It is mostly yellow in colour and has black spots and ligatures. It is covered in fine hairs.
The head is spherical and black and the antennae are very small and thin. The third segment of the antenna is very short and with apically thin hair. The proboscis is st...
...as black spots and ligatures. It is covered in fine hairs.
The head is spherical and black and the antennae are very small and thin. The third segment of the antenna is very short and with apically thin hair. The proboscis is strikingly large, yellow in colour and appears slightly darker at the end. In the resting position it lies on the belly amongst the legs. The proboscis is stretched out before eating takes place. The chest (thorax) is very rounded, yellow on the sides has a big, black shiny patch on the upper side. This patch is joined to broad longitudinal stripe which extends to the head. At the thorax’s sides there are large scales under which the halteres are covered. The abdomen is yellow and with black spots on the top as also with three black bandages , which to the rear end are wedge-shaped and extended. The legs are long , thin and from reddish-yellow to yellow in colour.
The Taurus fly feeds on the nectar of the various plant species whose blossoms she visits. The female lays her eggs on branches of trees or on blades of grass. The number of eggs (located singly or in or in small clusters) can amount ... | | |
| | The adult common yellow dung flies reach body lengths of 5-12 mm. They are brown, yellowish-brown, golden, yellow (male) to yellowish-green (female) and are covered in dense furry hair. Common yellow dung flies have yellow faces with whitish-gray or sometimes slightly brownish foreheads. In the centre of their chest section (mesonotum) is a narrow red stripe. Their antennae and proboscis are black and their legs are yellow.
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| The upper section of the body (prosoma) has dark edges and is a glassy, yellow to light brown colour. On the upper side is a black marking which resembles a "Y". The sternum is dark brown.
The rear section of the body (opisthosoma) is oblong. The basic colours of the upper side are white , yellow , green or reddish-brown. . At the upper section of the opisthosoma is the characteristic leaf-shaped marking (folium) , which varies in colour (often in highly-contrasting red tones). The underside is yellow to brown in colour, with one dark and two bright stripes in the middle.
The legs of the autumn spider are yellow to light brown in colour and have indistinct dark spots and rings. The midfoot (metatarsal) of the first leg pair is (on the ventral side) slightly hairy, ( on the ventral side).
Due to its appearance, the autumn spider can easily can confused ...
... she takes position on a mating string at the rear of the web. After mating the male spider leaves.
The female autumn spider creates several white, round cocoons onthe branches or the bark of trees for the protection of the eggs. Up to 100 yellow eggs are laid in these cocoons. A few days later the female autumn spider dies. The eggs overwinter in the cocoon. The new generation hatches in spring.
Some natural enemies of the autumn spider are: insectivores, birds and other spiders from ... | | |
| These are very small flies, about 2-3 mm in length and their bodies are mostly yellow in colour. The head and antennae are bright yellow. The top section? the upper surface? of their chest (thorax) is shiny black. Their scutellum is also light yellow. They have markings on the upper surface. The females have an ovipositor on the end of their bodies.
The adult flies have a life span of about 1 week and only feed on vegetables (phytophagous). Aside from the open air, they are mainly encountere...
...ll small holes in the top surface of plants’ leaves using their ovipositors and suck up liquid with their mouth parts. The damaged areas on the leaf tissue (which also enable bacteria and fungi to penetrate into the plant) are clearly visible as yellowish stains.
The males live on nectar or honeydew but they can live without nutrition until they mate. The females lay their eggs on the food plants of the larvae, for example chrysanthemums (hence their name) and gerberas.
In vegetable planta...
...l into the upper side of leaves and place 50 to 100 (sometimes even up to 400) eggs there. The hatched larvae develop rapidly. At the end of the third and last larval stage the bodies of the larvae can reach lengths of up to 3 mm. The bodies are yellowish-white in colour and have no legs. The larvae remain in the leaf and bite twisting (serpentine like) passageways into the cell tissues by moving their mouth hooks up and down. Hence the English name "Serpentine leafminers" for the gen...
...ne leafminers" for the genus Liriomyza. The outer layer of the leaves remains intact.
After 4 days the larvae are fully developed and leave the leaves’ interior, through a slit, in order to pupate. The development from egg to pupae (reddish-yellow to brown in colour) to adult takes about 17 days.
Endoparasites are natural enemies of the Chrysanthemum leaf miner larvae, for example, the larvae of the ichneumon wasps Dacnusa sibirica and Diglyphus isaea. The ichneumon wasps lay their eggs i... | | |
| | They have black bristles on the central section of the chest and two fine dark, longitudinal lines are visible there. The common yellow dung fly has greyish-brown transparent wings with red to yellow edges at the front. The abdomen of the females is greyish-brown with black hair, while the abdomen of the male is light yellow in colour.
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| | The larvae of ladybirds can look very different to each other, but they are mostly elongated and plump. They are blue-grey, brown or yellow in color with yellow, orange or red spots. One can often determine from the coloring of the larvae what their coloring will be as adults. Some larvae are similar to those of the dragonfly. | | |
| | Wool Carder Bee / Leafcutting Bee (Anthidium manicatum) | | The Anthidium manicatum is a solitary bee. It is with characteristic wasp-like black and yellow markings on the body. These yellow markings join on the abdomen.
The males can reach a length of 14 to 18 mm and have 5 spikes on the end of their abdomens.,which they use to defend their territory. Female Anthidium manicatum are 11 to 12 mm in length.
The Anthidium manica... | | |
| | Helophilus trivittatus | | ...widespread in Europe, Asia and North America.
Helophilus trivittatus can reach a length of 11 to 17 mm, the females being significantly larger than the males. Their chest is dark with bright stripes lengthwise and their abdomen is black with yellow markings. The face of the Helophilus trivittatus is hairy and light yellow in colour. The eyes are located on the forehead, three small simple eyes between the compound eyes. The antennae are black.
Helophilus trivittatus live in open terrain or in (wet) meadows, with many flowering plants. They feed on nectar and poll... | | |
| | The fly can reach a body length of 14 to 18 mm. It has a dark brown abdomen, the second segment of which has yellow, reddish-yellow or ochre wedge-shaped spots. The drone fly has black compound eyes, which are connected by hairy bends above and below. The females’ eyes are clearly separated, while the males’ meet. | | |
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