Blastodacna rossica
Blastodacna rossica is a butterfly (moth ) from the family of the grass leaf miner ( Elchistidae ).
- 4.1 Notes and references
Features
The moths reach a wingspan 9-13 mm. The fore wings are black and white grim drawn and vigorously mixed black-brown. An indistinct orange-brown line is located in the Costalfalte. The vane inner edge is dirty white and mixed dark.
In the males, the Gnathos has two long thin arms, each ending in a small prickly bump. The Anellus lobes are moderately bent and taper to a point. At the ventral edge there is a small but distinct surface tooth. The aedeagus has no distinct blunt keel. The vesica bears 3-4 sting groups, one of which is 3 to 4 times longer than the other. The genital armature of the males is similar to those of Blastodacna atra and Blastodacna brighter ella, these can be distinguished by the curved downwards Anellus flap with the very pointed apex as rossica substantially.
The genitals of the females differ from the similar species Blastodacna atra and Blastodacna brighter ella by the large, round genital plate, the bursae 4 crossed extending ridges on each side of the ostium of the granular sclerotization on the largest part of the surface of the corpus and of the adjacent ductus bursae and lanceolate shaped Signum.
Similar Species
B. rossica similar Blastodacna atra and Blastodacna brighter ella, differs from these two species but by the black-brown thorax and the darker inner edge of the forewing.
Dissemination
Blastodacna rossica is located in the Crimea, in the western part of the Transcaucasus and Central Asia.
Biology
The caterpillars develop on apple trees (Malus ) and probably also of pear (Pyrus communis). Drill from the second half of summer to autumn an approximately 40 millimeters long passage in the young branches. The infestation you can determine via the brown Raupenkotes, which is around the borehole can be found on the branch. The mature caterpillars overwinter and pupate in the following spring. It makes one generation per year, the butterflies fly in Europe from late May to August and in Central Asia from April to May