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Keyword: Generation |
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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Female maps of the first generation (spring) reach wingspans of up to 38 mm, those of the second generation (summer) reach 43 mm, while the males can reach spans of 32 mm in spring and 38 mm in summer. The body of the butterfly is slim and the upper surface is a black-brown colour. The underside is lighter and slightly hairy. The rings on the segments are...
...s of 32 mm in spring and 38 mm in summer. The body of the butterfly is slim and the upper surface is a black-brown colour. The underside is lighter and slightly hairy. The rings on the segments are white. The upper surface of the wings in the spring generation is a brownish-red to orange colour and is interspersed with black patches. The summer generation are black-brown to black or sometimes blue-black) The undersides of the wings in the two generations differ only slightly. | | |
| In late March, the adult bees of the first generation hatch. The males appear first and fly back and forth over the soil nests on hot days. Mating takes place in April. Immediately afterwards, the fertilized females begin constructing the brood nest in the ground. Nest colonies form/can form, comprisin...
...geway, which can be connected to individual brood chambers. The brood chambers are filled with food for the larvae by the females, a single egg is deposited on the food and the brood chambers are closed. Shortly after hatching, the larvae of the 2nd generation start feeding on the food supply. They develop in their chamber. Approximately 3 weeks after mating the males die. The females care for their brood until the end of May and then they die too. The larvae are left to fend for themselves until June whe...
...heir chamber. Approximately 3 weeks after mating the males die. The females care for their brood until the end of May and then they die too. The larvae are left to fend for themselves until June when they pupate. In early July, the adults of the 2nd generation hatch from their pupae. They are active until September when they die. Their offspring overwinter in soil nests, hatching in March of the following year as adults of the new 1st generation. | | |
| | Melanostoma scalare produce two new generations a year. The first new generation is active from April to May, and the second new generation, from September to October. The females of the first generation lay their eggs on the larval food plants in late May, and the females of the 2nd generation oviposite in early August. The larvae prey on aphids and other soft-skinned insects. After 2 months, they pupate and shortly afterwards emerge as adults. | | |
| | In their areas of origin, they produce one new generation after another (they don’t go into diapause), however, in the more northern regions (depending on climatic conditions), they reproduce only once or twice. The adult butterflies of the first new generation appear in July/August, the second generation in September / October. Butterflies of both new generations make their way south in autumn. Many do not make it across the Alpine border and die on the glaciers. In other cases (such as in the British Isles) painted ladies die before their return flight starts. | | |
| | 4 to 5 weeks after hatching, the development of the nymphs is complete. The winged juvenile bugs mate very quickly. Egg laying by the first new generation occurs in late June / early July singly in the leaf tissue of herbaceous plants. The nymphs hatch in midsummer. The specimens of the second annual generation during September turn over to the winter host plants. As adults, they for overwintering lay their eggs in the bark tissue of their host plants and the first new generation hatch the following year.
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| | The caterpillar is bluish-green with white stripes. This species produces 2 new generations a year. The eggs are laid on wild grasses, in May or June, and again, in August. The caterpillars hatch from their eggs after about 10 days and feed on the wild grasses. They are nocturnal. The caterpillars of the first generation develop into adults in about a month, while the second generation overwinter. After the caterpillars have pupated, it’s about two weeks until the new butterflies hatch. | | |
| | The caterpillars of the first new generation appear in June/July, those of the second generation appear in August/September. After 7-11 days the caterpillars are fully developed and pupate. The pupa is about 25 mm long, grey-brown to greenish-grey in colour and hangs upside down. The pupa remains in this position for approximately another 7-1... | | |
| The Pear Sawfly prefers habitats such as forests and gardens. Depending on the weather, it produces 2 or 3 new generations a year. Reproduction is normally parthenogenetic (without males). The females of the spring generation leave the soil in early May and lay their eggs, in June, on the leaves of different plants, such as cherry, pear, juneberry, mountain ash, hawthorn, quince, birch or roses. They scratch into the leaf tissue with their ovipositor, forming a small poc...
...in the final stage of their development. In July, they drop from the leaf and immediately create an egg-shaped tissue below the soil’s surface, in which they quickly pupate. About 2 weeks later (in July and August), the adults of the 2nd cherry slug generation hatch, mate and lay eggs. The larvae (cherry slugs) are active from September to October. They also pupate and overwinter in the soil. They leave the pupae as adult cherry slugs in the spring. | | |
| The caterpillars of the last generation overwinter. They pupate in spring of the following year and emerge as adult butterflies in May. The adult brown argus butterflies are active from May to June. During this time they mate and reproduce. The fertilized females always lay their eggs on ...
...hey have completed their development. They are greenish and have a pale line lengthwise on each side. When they have reached a length of about 20 mm they pupate. They hatch from the pupae from late July to mid September and produce the second annual generation of caterpillars which overwinter in leaves in frost free places. | | |
| | Melanostoma mellinum produce two new generations a year. The first is active from April or May, the second from September or October. The females of the first generation lay their eggs in late May, and the females of the second generation do the oviposition in early August on the food plants of the larvae. The larvae are initially blind. They prey on aphids, flies and other soft-skinned insects. After 2 months, they pupate and shortly thereafter emerge as adults. | | |
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