Blastodacna hellerella
| Blastodacna hellerella | ||||||||||||
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Blastodacna hellerella |
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| Scientific name | ||||||||||||
| Blastodacna hellerella | ||||||||||||
| ( Duponchel , 1838) |
Blastodacna hellerella is a butterfly ( moth ) fromthe grass leaf miner family (Elachistidae) and the genus Blastodacna .
features
The moths reach a wingspan of 10 to 13 millimeters. The forewings are drawn somber black and white. Yellowish orange lines are missing, only a few ocher-colored scales form a fairly distinct subbasal band. The inner edge of the wing is more or less pure white and has very few dark scales.
In the males, the gnathos has two long thin arms, each ending in a small spiky bump. The anellus lobes are moderately curved and have a rounded apex. They lack the clearly protruding process anteriorly . The Aedeagus does not have a pronounced blunt keel. The vesica has 3 to 4 groups of spines, one of which is 1.5 to 2 times longer than the others. The genital fittings of the males are similar to those of Blastodacna atra and Blastodacna rossica , from which B. hellerella can essentially be distinguished by the anellus lobes with their rounded tips, which are clearly curved in the apical half.
In females, the genital plate that encloses the ostium is triangular and tapers laterally . It is provided with individual needles. The corpus bursae is egg-shaped, the signum is horn-shaped and finely granulated. The genital armature of females can be distinguished from Blastodacna atra and Blastodacna rossica on the basis of the laterally tapering genital plate and the slightly sclerotized and smaller blister-shaped section of the ductus bursae.
Similar species
Similar species are Blastodacna atra and Blastodacna rossica , the differences are described in the respective articles.
distribution
Blastodacna hellerella is common in Europe with the exception of the north. In the east the distribution area extends to the Caucasus . The moths can be found on forest edges, in parks and gardens where hawthorn grows.
biology
The caterpillars develop on double-fluted hawthorn ( Crataegus laevigata ) and single-fluted hawthorn ( Crataegus monogyna ). Other host plants mentioned in the literature are blackthorn ( Prunus spinosa ), plums ( Prunus domestica ) and apples ( Malus ), but these details require confirmation. Most of them concern B. atra , the information about major damage to apple trees in Japan is probably incorrect and can be attributed to the web and bud moth species Argyresthia conjugella . The caterpillars develop in the berries from summer to autumn. Infested berries can be recognized by a hole on the side. The caterpillars pupate in late autumn in a loose cocoon in rotting wood or in the ground. The species forms one generation per year, the moths fly from May to August. The moths are nocturnal and come to light .
swell
Individual evidence
- ↑ a b c J. C. Koster, S. Yu. Sinev: Momphidae, Batrachedridae, Stathmopodidae, Agonoxenidae, Cosmopterigidae, Chrysopeleiidae . In: P. Huemer, O. Karsholt, L. Lyneborg (eds.): Microlepidoptera of Europe . 1st edition. tape 5 . Apollo Books, Stenstrup 2003, ISBN 87-88757-66-8 , pp. 73 (English).
- ↑ a b Guide to the Moths of Great Britain and Ireland. Blastodacna hellerella (Duponchel, 1838). Ian Kimber, accessed September 1, 2011 .
Web links
- Lepiforum e. V. Taxonomy and Photos
- Blastodacna hellerella in Fauna Europaea. Retrieved September 1, 2011
- Ian Kimber: Guide to the moths of Great Britain and Ireland. Photos at UKmoths