Elachista wieseriella
Elachista wieseriella 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 10.4 to 11.5 mm in males and from 10.1 to 10.8 mm in females. Head, thorax and tegulae are pale ocher. The abdomen is gray. It is laterally and ocher -colored light to the ventral segment edges. The antennae of the males are uniformly dark gray, while the females are striped gray brown. The labial palps are very long and whitish to pale ocher. The second term is outside and ventral scaly gray-brown. The forewings are ochreous narrow and on top monochrome pale. The Costalhälfte is obscured varying narrow dark gray from the base to the wing center. The hind wings are gray black at the top and bottom and have gray Frans shed.
In the male the uncus has a deep and V- shaped neckline. The Uncuslappen are large, semi-circular and evenly rounded. The Tegumen is narrow and has a clearly contrasting sac. The Valven are narrow at the base and widen from the first third significantly. At the top they are cut off and appear subrectangulär. The strongly sclerotized Costa has an additional cusp at 3/ 4 of its length and is expanding belly shape in the last fifth. At 1/ 4 of the length of an orthogonal Valve is bent inwards, sclerotized bar. The juxtaposition is broad and lobed. A finger-shaped appendage margins relatively broad and evenly. The aedeagus is slender, moderately sclerotized, tapering to the tip. The Apex has two Spitzchen; Cornuti are not formed.
In females, the Apophyses are posterior and the anterior Apophyses rod-shaped and about the same length. The eighth tergite is very wide and short. It is bordered almost linearly. The antrum is slim, cup- shaped and sclerotized to the posterior edge. The rear half of the ductus bursae is very slim, tubular and strongly sclerotized. The front half expands and is membranous. The corpus bursae is large, sculpted pear-shaped and fine. The Signum is strikingly large. It is wide, not curved and strongly denticulate.
Similar Species
Elachista wieseriella is assigned cerusella subgroup because of the structure of the male genitals of Elachista. This is represented in Europe with only a few ways:
- Elachista anserinella Zeller, 1839
- Elachista rufocinerea ( Haworth, 1828)
- Elachista Lastrella Chrétien, 1896
- Elachista monosemic ella ( Rössler, 1881)
- Elachista stenopterella Rebel, 1932
All five species differ in habit and in the structure of the genitalia. The described from Albania kind Elachista stenopterella similar Elachista wieseriella, but has bright ocher sensor and the front wings are not obscured in the basal half. Other distinguishing features are the bright front wing bottoms and the light gray hind wings. The genital armature of the males has smaller uncus lobes and narrower distally Valven, a short sac and one thicker and shorter aedeagus. Elachista Lastrella as Elachista wieseriella also monochrome. Here the males are gray, but have a distinctly different genital armature. The remaining species can be distinguished by the more or less well-educated forewing drawing and Frans dividing line.
Distribution and habitat
Elachista wieseriella comes only in Austria in the field of museums in St. Jakob in the valley of Lesa at an altitude 1650-1800 meters in front. It is worth noting that the way the South Tyrolean Dolomites and Julian Alps is not to be found in the neighboring Lienz Dolomites.
The vegetation in the locality Fund is subalpine calcareous mountain meadows, these are gold - fescue - mountain meadows, assign bristle grass -Horst - Seggenrasen and possibly other associations. The rare white funnel lily ( paradiseâ liliastrum ) occurs as a Companion Plant striking in appearance.
The species was first described only after the creation of the Red List for Carinthia, thus missing a classification. A threat to the species goes through a bush encroachment of mountain meadows. Large parts of the museums are, however, regularly mowed again with funding from the Province of Carinthia. Elachista wieseriella is not protected. The type locality, however, is designated as Natura 2000 site.
Biology
Little is known about the biology of the species. It is assumed that the track as well as the other Elachista species, in the leaves of grasses ( Poaceae ) nate. The moths fly at the site of the holotype from mid-June to early August, and come in small numbers also come to light. The Abundanzmaximum is reached during dusk and is typical of many grass leaf miner species. During this period, the moths are occurring on the dry meadows most common species of butterfly.
Etymology
Elachista wieseriella was after its discoverer, the Carinthian zoologists Christian Wieser, named.