Baptria tibiale
Mourning tensioner ( Baptria tibial )
The funeral tensioner ( Baptria tibial ) is a butterfly (moth ) from the family of the tensioner ( Geometridae ).
- 5.1 Synonyms
- 5.2 subspecies
Features
The moths reach a wingspan of 22-26 millimeters, and have black front and rear wings. From the front edge center of the front wing, a broad, white directed towards the interior angle binding, but the latter does not reach draws. Specimens with white binding on the hind wings were described as forma tetraleucotaenia Zukowsky. The egg is pale green to white, flattened, oval and slightly weak. The caterpillar is slightly narrow at the front, a total of slightly flat, without significant side folds and with yellow segment incisions. The back line is broad, brownish-red or purple-brown and partially dissolved in heart-shaped spots. The doll is stocky and brown in color.
Dissemination
The funeral tensioner occurs very locally and rarely in moist places in sparse deciduous forests on, welcome to contact creek valleys, even in calcareous wooded slopes up to 1,200 m altitude in the foothills of the Alps, in northern Germany, he was not permanently established, previously isolated in Thuringia, but there threatened with extinction, However occurring in Scandinavia, Finland and Poland.
Way of life
The moths fly during the day, mainly in the sunshine in the morning hours of light forest bureaus or bush -rich forest edges. The moth is extremely shy. When seated, the wings are constantly moving up and down. In case of faults, the moths can often fall and play dead, however if risk they immediately fly into the air. The females lay eggs in the afternoon from the leaf tips of the food plant. The caterpillar feeds exclusively on Ährigem Baneberry ( Actaea spicata ). The caterpillar is also very shy and rockets at risk immediately away from the food plant. Pupation takes place on the ground under leaves and moss. The pupa overwinters, often several times.
Flight times and caterpillars
The funeral tensioner flies in one generation in June / July. The caterpillars live in July and August.
Threats and conservation
The species is considered critically endangered and is classified in Category 2 of the Red List of Threatened Species of the FRG, also in Bavaria as " extremely rare with geographic restriction. "
System
Synonyms
- Odezia tibial
- Phalaena tibial Esper, 1791
Subspecies
The following subspecies have been described:
- Baptria tibial borealis Lankiala, 1937
- Baptria tibial fennica Lankiala, 1937
- Baptria tibial tibial ( Esper, 1791)