Blastodacna atra
Blastodacna atra
Blastodacna atra is a butterfly (moth ) from the family of the grass leaf miner ( Elachistidae ).
- 5.1 Notes and references
Features
The moths reach a wingspan of 10-13 millimeters. The thorax is creamy white with variable dark brown mixing. The forewings are dark brown and the Costa loader more drab. A cream- white line extends from the wing base to the interior angle. He is mixed with dark brown and yellowish ocher scales and limits in the middle of a dark brown subdorsales shed tufts. A second shed tufts located on the inner angle. Ocher -colored lines are located in the Costalfalte and in the Diskoidalzelle. From the ocher-colored line in the cell arise from individual, inward and outward to Costa, cream white lines. Another small, creamy white line is before the apex. The fringe scales are gray at the apex and dark gray at the base. At Apex run two dark transverse lines. The dark brown mixing at Vertex, thorax and dorsal line is variable.
In the males, the Gnathosarme are constricted long and distally. They are bent downward to the middle of Tegumens; at the top there is a small bump with two rows of prongs. Anellus the flap more than half as long as the Valven and in the basal half of the widest. The apex tapers and a triangular, tapering extension is located at 3/ 4 of the ventral margin. The aedeagus is long and curved, distally slightly tapering. The vesica has 4 similar groups of spines.
In females, the genital plate is rectangular and side and front thorny. The front part of the ductus bursae is provided with a rectangular, sclerotized plate, followed by a broad, bulbous, not sclerotized section connects. The corpus bursae is oval and bears a granular dome-shaped Signum.
Similar Species
B. atra similar Blastodacna brighter ella and Blastodacna rossica, but differs from them by the bright yellow orange drawing on the front wings.
Dissemination
Blastodacna atra is widely used in Europe with the exception of the north.
Biology
The females lay eggs singly on apple trees (Malus ) near the leaf axil from. The caterpillars nate from August to early June at the Mark of the branches and eat during the winter months. The caterpillar infestation can be seen Raupenkot near the inlet hole on the basis of a small pile will. As a result of feeding activity die from shoots and flowers and cracks form in the bark. The caterpillars pupate from May to June the branches. It makes a generation, the moths fly from late May to early September. Blastodacna atra can become a serious pest of apple trees.
System
From the literature, the following synonyms are known:
- Recurvia atra Haworth, 1828
- Elachista putripenella Zeller, 1839
The first description of the species was based on a melanistic form, which occurs mainly in England. The light shape was described by Zeller in 1839 as Elachista putripenella and later regarded as a variation.