Brown-rimmed dwarf tension
| Brown-rimmed dwarf tension | ||||||||||||
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Brown-rimmed dwarf moth ( Idaea humiliata ) |
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| Scientific name | ||||||||||||
| Idaea humiliata | ||||||||||||
| ( Hufnagel , 1767) |
The Braunrandige dwarf tensioner ( Idaea humiliata ), also Rotrandiger steppe pasture tensioner or Hauhechel Small Spanner called, is a butterfly ( moth ) from the family of the tensioner (Geometridae).
features
The moths have a wingspan of 14 to 19 mm, with the females being slightly smaller on average. The front edge is colored red or red-brown continuously up to the apex . The color becomes more intense when developing in higher humidity and lower temperatures. The wavy transverse lines are gray, with many specimens the outer transverse line is most pronounced. The discal spots are almost always present, clearly delimited and black. The middle transverse line runs very close to the discal spot.
The reddish egg is oval and finely divided. The caterpillar is relatively short and stocky. It is brownish, the surface is covered with elongated fine warts. The doll is colored reddish brown and has a dark back line.
Geographical distribution and habitat
The species is widespread in southern and central Europe. In the north it extends to southern Scandinavia, in the east to the Urals . The only occurrence in England on the Isle of Wight has been extinct since 1931. The earlier records in North Africa belong to the closely related species Idaea bigladiata . The vertical distribution extends in the north of the plain to about 700 m above sea level, in the southern Alps to about 1500 m. In southern Europe and Asia Minor, the species rises to an altitude of 2000 m. The species occurs in gardens, meadows and bushes as well as in rock corridors, semi-arid grasslands and scree slopes.
Phenology and way of life
The moths fly in a single, long generation from late May to late August. A partial second generation is rarely formed, the moths of which fly from mid-September to early October. They are nocturnal and are attracted by artificial light sources. The females simply drop the eggs into the grass. The caterpillars were found among common horseshoe clover ( Hippocrepis comosa ) and broad-leaved thyme ( Thymus pulegioides ), but without evidence that the caterpillars also ate it. Other food plants mentioned are: the thorny restorer ( Ononis spinosa ) and finger herbs ( Potentilla ).
Systematics
The species was first described in 1767 by Johann Siegfried Hufnagel as Phalaena humiliata . Michael Denis and Johann Ignaz Schiffermüller described the species in 1775 as Geometra ossearia ; this name is therefore a more recent synonym of Idaea humiliata .
Danger
The species is generally not endangered in Germany. However, the situation is somewhat different in some federal states. In Mecklenburg-Western Pomerania, Lower Saxony and North Rhine-Westphalia the species is considered critically endangered (category 2), in Saxony as endangered (category 3).
swell
literature
- Axel Hausmann: The Geometrid moths of Europe, 2nd Sterrhinae. In A. Hausmann (Ed.): The Geometrid Moths of Europe 2. Apollo Books, Stenstrup 2004, ISBN 87-88757-37-4
- Walter Forster , Theodor A. Wohlfahrt : The butterflies of Central Europe. Volume 5: Spanner. (Geometridae). Franckh'sche Verlagshandlung, Stuttgart 1981, ISBN 3-440-04951-5 .
- Günter Ebert (Ed.): The butterflies of Baden-Württemberg Volume 8, Nachtfalter VI (Spanner (Geometridae) 1st part), Ulmer Verlag Stuttgart 2001. ISBN 3-8001-3497-7
Individual evidence
- ↑ a b Idaea humiliata (Hufnagel, 1767) . s4ads.com. Retrieved April 26, 2013.
Web links
- www.lepiforum.de Taxonomy and photos
- Ian Kimber: Guide to the moths of Great Britain and Ireland (English)
- Moths and Butterflies of Europe and North Africa (English)