Zygiella atrica (C. L. Koch, 1845) - Red-sided Sector-spider

Occurrence: The Red-Sided Sector-spider lives on bridges, buildings, fences, in gardens, parks and on forest edges. It is common species, on human buildings there are colonies of these spiders very common. Description: It has round abdomen and has color variability, the marking (folium) is very significant. You can mislead it with the Missing-Sector Orb-Weaver (Zygiella x-notata). Unlike Zygiella x-notata the Red-Sided Sector-spider has light, yellow-brown prosoma and legs. We can discern darker spiders with brown prosoma and legs thanks to dark central stripe: the Red-Sided Sector-spider has it tight, from eyes a short dark stripe can go on both sides of prosoma. The most reliable determination is according to genitals. Period of occurrence: Adults are seen all the year. Web: The Red-Sided Sector-spider weavs small, dense, and strong web. It usually responds to a prey soon. It moves on its web pretty fast and wants to spend the least possible time there. The signal thread is connected with nest, which is lined with dense fiber. If the nest is above the central area, so in area of web, where the signal thread is, there is a missing sector. There is the web cut to the circular sector. If the missing sector is too big, (over about 40°), spider can tape the sector with several threads. If the nest is at the same level as the central area, the missing sector is missing and the web is symmetrical. We can see the spider sitting on its web only at night. Food: The Red-Sided Sector-spider hunts especially small flying insects


photo: Kryštof Rückl



photo: Kryštof Rückl



photo: Kryštof Rückl



photo: Kryštof Rückl



photo: Kryštof Rückl



photo: Karolina Rücklová



photo: Karolina Rücklová



photo: Václav Kroc



photo: Kryštof Rückl



photo: Karolina Rücklová



photo: Karolina Rücklová



photo: Karolina Rücklová



photo: Karolina Rücklová



photo: Karolina Rücklová



photo: Karolina Rücklová



photo: Karolina Rücklová



photo: Karolina Rücklová



photo: Václav Kroc



photo: Karolina Rücklová



photo: Karolina Rücklová



photo: Karolina Rücklová



photo: Karolina Rücklová



photo: Kryštof Rückl



photo: Kryštof Rückl



photo: Kryštof Rückl



photo: Kryštof Rückl



photo: Kryštof Rückl



photo: Kryštof Rückl



photo: Kryštof Rückl



photo: Kryštof Rückl



photo: Kryštof Rückl



photo: Kryštof Rückl



photo: Kryštof Rückl



photo: Kryštof Rückl



photo: Kryštof Rückl



photo: Kryštof Rückl



photo: Kryštof Rückl



photo: Kryštof Rückl



photo: Kryštof Rückl




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