Latin Name: |
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Lasius (Chthonolasius) umbratus
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Trivialname: |
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Yellow Shadowant |
Taxonomy: |
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Subfamily: Formicinae Tribe: Lasiini
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Keeping Level: |
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(2) needs a host- ant for founding
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Distribiution: |
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from scandinavia to spain, eastborder casastan
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Habitate: |
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open grassland and woodland, often in ruralareas, sometimes found as houseant in anthropegenic disturbed areas |
Colonyform: |
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monogyn
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Queen: |
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Size: 9 mm Colour: black; light brown shimmer
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Worker: |
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Size: 3 - 5 mm Colour: yellow to yellowish brown, shimmer through strong pubescens
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Soldier: |
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not present |
Males: |
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Size: 3,5 - 4,5 mm Colour: black , slim |
Nutrion: |
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Honeywater and insects e.g. Dipterans like Flies or Mosqitos |
Airhumidity: |
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Arena: 30 - 50% Nestpart: 50 - 60%
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Temperature: |
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Arena: 18 - 28°C Nestpart: 21 - 24°C
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Hibernation: |
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yes, from end of October until end of March at 5 - 8°C
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Nestform: |
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Build their nest in soil, under stones, also in wood, dry sticks and under bark
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Kind of Formicaria:
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Farm, Farmbasin, Basin, Framebasin, Island, Acrylcylinder, Ytong/Plaster
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Formicaria size: |
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Size: S - M
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Substrate: |
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Farm: Sand-Loam , cork , wood Arena: Sand-Loam
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Planting: |
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similar to Forest- and Sandareas moss, grass and other plants
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Decoration: |
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Branches, Roots, Treeneedels, stones
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Description: |
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Lasius umbratus founds socialparsitic through killing an worker of there Hostcolony and adapting so the colonyodour. After infiltrating the colony the hostworker nurses the umbratus - queen and they starts laying eggs after 2-3 weeks. Most of their nutrition comes from subterrainian aphids. |
Development: |
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matingflight: on warm days mid - may to the end of june at 22 - 28°C
founding: sozialparasitic in Lasius niger, Lasius platythorax, Lasius brunneus and Lasius psammophilus
colonysize: -
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Quantity: |
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one fertilized queen with workers (see selection); brood (depending on the season and development) |
Weblinks: |
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- Forum
- Reference
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