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Chelis quenseli (Paykull, 1793)

Synonyms/other combinations:
Grammia quenseli

Chelis quenseli: Male (e.l. Switzerland, Grisons, Umbrail, larvae found in mid-October 2006) [S] Chelis quenseli: Male (e.l. Switzerland, Grisons, Umbrail, larvae found in mid-October 2006) [S] Chelis quenseli: Male (e.l. Switzerland, Grisons, Umbrail, larvae found in mid-October 2006) [S] Chelis quenseli: Male (e.l. Switzerland, Grisons, Umbrail, larvae found in mid-October 2006) [S] Chelis quenseli: Male (e.l. Switzerland, Grisons, Umbrail, larvae found in mid-October 2006) [S] Chelis quenseli: Male (e.l. Switzerland, Grisons, Umbrail, larvae found in mid-October 2006) [S] Chelis quenseli: Male (e.l. Switzerland, Grisons, Umbrail, larvae found in mid-October 2006) [S] Chelis quenseli: Male (e.l. Switzerland, Grisons, Umbrail, larvae found in mid-October 2006) [S] Chelis quenseli: Male (e.l. Switzerland, Grisons, Umbrail, larvae found in mid-October 2006) [S] Chelis quenseli: Male (e.l. Switzerland, Grisons, Umbrail, larvae found in mid-July 2007) [S] Chelis quenseli: Female (e.l. Switzerland, Grisons, Umbrail, larvae found in mid-October 2006) [S] Chelis quenseli: Female (e.l. Switzerland, Grisons, Umbrail, larvae found in mid-October 2006) [S] Chelis quenseli: Female (e.l. Switzerland, Grisons, Umbrail, larvae found in mid-October 2006) [S] Chelis quenseli: Female (e.l. Switzerland, Grisons, Umbrail, larvae found in mid-October 2006) [S] Chelis quenseli: Female (e.l. Switzerland, Grisons, Umbrail, larvae found in mid-July 2007) [S] Chelis quenseli: Female (e.l. Switzerland, Grisons, Umbrail, larvae found in mid-July 2007) [S] Chelis quenseli: Female (e.l. Switzerland, Grisons, Umbrail, larvae found in mid-July 2007) [S] Chelis quenseli: Egg (e.l. Switzerland, Grisons, Umbrail, larvae found in mid-October 2006) [S] Chelis quenseli: Egg (e.l. Switzerland, Grisons, Umbrail, larvae found in mid-October 2006) [S] Chelis quenseli: Egg (e.l. Switzerland, Grisons, Umbrail, larvae found in mid-October 2006) [S] Chelis quenseli: Young larva (Sweden, Abisko, young larva found in early July 2020) [S] Chelis quenseli: Young larva (e.l. Sweden, Abisko, young larva found in early July 2020) [S] Chelis quenseli: Young larva (e.l. Sweden, Abisko, young larva found in early July 2020) [S] Chelis quenseli: Half-grown larva (e.l. Sweden, Abisko, young larva found in early July 2020) [S] Chelis quenseli: Half-grown larva (e.l. Sweden, Abisko, young larva found in early July 2020) Chelis quenseli: Half-grown larva (e.l. Sweden, Abisko, young larva found in early July 2020) [S] Chelis quenseli: Half-grown larva (e.l. Sweden, Abisko, young larva found in early July 2020) [S] Chelis quenseli: Half-grown larva (e.l. Sweden, Abisko, young larva found in early July 2020) [S] Chelis quenseli: Half-grown larva (e.l. Sweden, Abisko, young larva found in early July 2020) [S] Chelis quenseli: Half-grown larva (e.l. Sweden, Abisko, young larva found in early July 2020) [S] Chelis quenseli: Larva (e.l. Sweden, Abisko, young larva found in early July 2020) [S] Chelis quenseli: Larva (e.l. Sweden, Abisko, young larva found in early July 2020) [S] Chelis quenseli: Larva (e.l. Sweden, Abisko, young larva found in early July 2020) [S] Chelis quenseli: Half-grown larva (Switzerland, Grisons, Umbrail, mid-July 2007) [M] Chelis quenseli: Half-grown larva (Switzerland, Grisons, Umbrail, mid-July 2007) [M] Chelis quenseli: Half-grown larva (e.l. Switzerland, Grisons, Umbrail, larvae found in mid-July 2007) [S] Chelis quenseli: Half-grown larva (e.l. Switzerland, Grisons, Umbrail, larvae found in mid-July 2007) [S] Chelis quenseli: Larva (e.l. Switzerland, Grisons, Umbrail, larvae found in mid-July 2007) [S] Chelis quenseli: Larva (e.l. Switzerland, Grisons, Umbrail, larvae found in mid-July 2007) [S] Chelis quenseli: Larva (e.l. Switzerland, Grisons, Umbrail, larvae found in mid-July 2007) [S] Chelis quenseli: Larva (e.l. Switzerland, Grisons, Umbrail, larvae found in mid-July 2007) [S] Chelis quenseli: Larva (e.l. Switzerland, Grisons, Umbrail, larvae found in mid-July 2007) [S] Chelis quenseli: Larva (e.l. Switzerland, Grisons, Umbrail, larvae found in mid-July 2007) [S] Chelis quenseli: Larva (e.l. Switzerland, Grisons, Umbrail, larvae found in mid-July 2007) [S] Chelis quenseli: Larva (e.l. Switzerland, Grisons, Umbrail, larvae found in mid-July 2007) [S] Chelis quenseli: Larva (Switzerland, Grisons, Umbrail, mid-October 2006) [M] Chelis quenseli: Larva (Switzerland, Grisons, Umbrail, mid-October 2006) Chelis quenseli: Larva (Switzerland, Grisons, Umbrail, mid-October 2006) [M] Chelis quenseli: Larva (Switzerland, Grisons, Umbrail, mid-October 2006) [M] Chelis quenseli: Larva (Switzerland, Grisons, Umbrail, mid-October 2006) [M] Chelis quenseli: Larva (Switzerland, Grisons, Umbrail, mid-October 2006) [M] Chelis quenseli: Larva (Switzerland, Grisons, Umbrail, mid-October 2006) [M] Chelis quenseli: Larva (Switzerland, Grisons, Umbrail, mid-October 2006) [M] Chelis quenseli: Larva (Switzerland, Grisons, Umbrail, mid-October 2006) [M] Chelis quenseli: Larva (Switzerland, Grisons, Umbrail, mid-October 2006) [M] Chelis quenseli: Larva (Switzerland, Grisons, Umbrail, mid-October 2006) [M] Chelis quenseli: Pupa (e.l. Switzerland, Grisons, Umbrail, larvae found in mid-October 2006) [S] Chelis quenseli: Pupa (e.l. Switzerland, Grisons, Umbrail, larvae found in mid-October 2006) [S] Chelis quenseli: Pupa (e.l. Switzerland, Grisons, Umbrail, larvae found in mid-July 2007) [S] Chelis quenseli: Habitat (Sweden, Abisko, young larva found in early July 2020) [N] Chelis quenseli: Habitat (Sweden, Abisko, young larva found in early July 2020) [N] Chelis quenseli: Larval habitat (Switzerland, Grisons, Umbrail, mid-July 2007) [N] Chelis quenseli: Larval habitat (Switzerland, Grisons, Umbrail, mid-July 2007) [N] Chelis quenseli: Larval habitat (Switzerland, Grisons, Umbrail, mid-July 2007) [N] Chelis quenseli: Larval habitat (Switzerland, Grisons, Umbrail, mid-October 2006) [N] Chelis quenseli: Larval habitat (Switzerland, Grisons, Umbrail, mid-October 2006) [N]

Host plants:
The larvae are polyphagous.

Habitat:
Chelis quenseli inhabits alpine, low-growing, rather dry meadows and pastures above the tree line between 2000 and 2900m above sea level, especially in the central Alps of Switzerland, but also in the Alps in Austria, Italy and France. Chelis quenseli is usually very local and rare.

Life cycle:
The life cycle is biennial. The eggs are dispersed, not fixed. The caterpillar overwinters once small and then fully-grown at the second time. I found such overwintering, mature caterpillars in mid-October 2006 in the southern Engadine at 2500m above sea level together with pupae of Pontia callidice, larvae of Erebia pandrose, Setina aurita, Parasemia plantaginis, Phragmatobia fuliginosa, Zygaena exulans and Hypodryas cynthia under the sparse stones in small cavities loosely curled. In early July 2007, I observed especially half-grown caterpillars there. At the same time, one would have been able to observe eggs and butterflies.

Endangerment factors:
In places, Chelis quenseli can be endangered through tourism-related landscape destruction.

Remarks:
Also this species is determined in the periodic fluctuations by parasites and fungi.

Chelis quenseli shows the Holarctic distribution pattern: Alps and circumpolar (e.g. northern Scandinavia).


Chelis arragonensis | Chelis cervini | Chelis maculosa | Chelis simplonica 
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