N A T U R K U N D L I C H E S   I N F O R M A T I O N S S Y S T E M

Micropterix osthelderi Heath, 1975

(zoological nomenclature: valid name, available)

General information:

Micropterix osthelderi Heath, 1975: 256–258, figs 5–6.
Type locality: Bavaria, Fürstenrud [Fürstenried] near Munich
Type: Holotype : Bav. mer., Fürstenrud [Fürstenried] b. München, Daniel, 24.iv.26 (examination of genitalia Heath No. 261); in coll. Zoologische Sammlung des Bayrischen Staates, Munich [examined].

Synonyms, misspellings, wrong determinations, etc.:
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Remarks. The paratypes of M. osthelderi (deposited in ZSM) include also specimens of Micropterix schaefferi Heath, 1975.

Habit:

: Bavaria, national park Berchtesgaden, Klausbachtal, 900 m, 2002.05.02, leg. Alfred Haslberger, coll. Michael Kurz : eastern Tyrol, Lienzer Dolomiten, Lavant, Almtal, 1200 - 1400 m, 2002.06.11, leg. Helmut Deutsch, coll. Deutsch : eastern Tyrol, Lienzer Dolomiten, Lavant, Almtal, 1700 m, 2005.06.17, leg. et. coll. Helmut Deutsch : Salzburg, Flachgau, Thalgau, Stilles Tal, 2003.05.17, leg. Renate Hausenblas und Christof Zeller, coll. Christof Zeller
Picture from: Kurz Michael
Detailed view
Picture from: © Deutsch Helmut
Detailed view
Picture from: © Deutsch Helmut
Detailed view
Picture from: Kurz Michael
Detailed view
     
: Salzburg, Flachgau, Thalgau, Stilles Tal, location 21/5, 1987.05.29, leg. Zeller & Kurz, coll. Michael Kurz      
Picture from: Kurz Michael
Detailed view
     

Scheme of wing pattern:

Description of adults: Examined: 1 , 7 . Forewing length: 4.7 mm, 5.0–5.6 mm. Head dark-brown; vestiture of hair-like scales on the head light to dirty yellow; antennae brownish, bronzy golden shining, 3/4 (), respectively, 1/2 () of forewing length; thorax bronzy golden; tegulae bronzy golden, mixed with purple scales; forewing purplish violet to bluish violet; the basal fourth dark golden to bronzy golden, except small purplish violet streaks at the base of costa and towards dorsal margin lying within the basal bronzy golden colouration which reaches the median fascia, and a bronzy golden streak from costa along outer margin, just leaving the tip of the apex purplish violet; the rest of the markings whitish golden to golden, finely bordered in bronzy gold: a moderately broad fascia of equal width at 1/2, slightly bent outwards; a small costal spot at 2/3; a big costal spot at 3/4, bent inwards and sometimes enlarged towards centre of wing; fringe light bronzy golden; hindwings bronzy golden with a strong purple colouration, especially at apex; fringe bronzy golden; legs and abdomen brown, bronzy golden shining.

Distribution:

Originally, Heath (1975) recorded the species only from the Alps (Austria, Switzerland, Bavaria) and from the uplands (Germany: Rheingau; Poland: Sudeten), although partly mixing it in the type series with M. schaefferi. According to Karsholt & Nieukerken (2012), the species occurs in France, Italy, Germany, Switzerland, Austria, Poland, Czech Republic, Slovakia, Denmark and Netherlands. Vertical records have been documented so far from 300 - 1600 m (Kurz & Kurz 2012).

Biology:

M. osthelderi inhabits preferably biotopes, which are associated with open coniferous woodland. In the Alps, it has been found around pine, larch and spruce, but also in elfin woodland among Rhododendron and close to alpine scarcely vegetated scree or among carbonate rocks. Furthermore, it may be found on clear-cuts rich of tall herb vegetation and bushes. Imagines are on the wing from late April till early July, depending on the altitude (all information retrieved from Kurz & Kurz 2012).

Stages in development:

The early stages are unkown.

Anatomy:

, scheme of cuticula -genitalia, prep.-no. 789, M. Kurz: Bavaria, national park Berchtesgaden, Klausbachtal, 900 m, 2002.05.02, leg. Alfred Haslberger, coll. Michael Kurz -genitalia, prep.-no. 310, M.Kurz: "Gradenalm; M.6.1892; Hauder", coll. Oberösterreichisches Landesmuseum, Linz , scheme of cuticula
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
-genitalia, preparation in caustic potassium, prep.-no. 762 M.Kurz: northern Tyrol, Stubaier Alpen, Gschnitz, 1300 m, 1918.07.10, leg. Koschabek, coll. Zoologische Sammlung des Bayrischen Staates, Munich -genitalia, preparation in caustic potassium, higher magnification, prep.-no. 762 M.Kurz: northern Tyrol, Stubaier Alpen, Gschnitz, 1300 m, 1918.07.10, leg. Koschabek, coll. Zoologische Sammlung des Bayrischen Staates, Munich -genitalia, prep.-no. 762 M. Kurz: northern Tyrol, Stubaier Alpen, Gschnitz, 1300 m, 1918.07.10, leg. Koschabek, coll. Zoologische Sammlung des Bayrischen Staates, Munich -Genitalia, prep.-no. 259, M.Kurz: Salzburg, Tennengau, Golling, Bluntautal, 1972.05.06, leg. Fritz Mairhuber, coll. Haus der Natur, Salzburg
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
   
-genitalia, prep.-no. 259, M.Kurz: "Golling - A Bluntautal; 06.5.1972; Salzburg Austria; leg. Fr. Mairhuber", coll. Haus der Natur, Salzburg -genitalia, receptaculum seminis and spikes, prep.-no. 264, M.Kurz: "n. Kalkvoralpen; Thalgau/Sbg. 21/5; 29.5.1987; nachmittags; leg. Zeller/Kurz", coll. Kurz    
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
   

Genitalia. Uncus short, stout, with a small tip; accessory claspers with a lower row of shorter spinoid setae, partly bent at the end, and an upper row of strongly modified Y-shaped thickened setae; valvae long, constricted medially, with probably two longer and some shorter, basal setae at the inner surface; two irregular rows of shorter spinoid setae and a row of longer setae at the distal third of the inner surface and many small spinoid setae at the tip of the valvae.

Genitalia. Tergite IX missing, sternite IX reduced and very similar to Micropterix schaefferi Heath, 1975, just somewhat enlarged medially; terminal papillae with a very characteristic sclerotization: margin towards segment IX medially enlarged outwardly, with smooth margins; ductus receptaculi at the beginning of the receptaculum seminis very slender; receptaculum seminis long, constricted medially and strongly bent, only the last part enlarged like a sac, with a typical striation; receptaculum seminis with three very small spinoid setae at the end, lying side by side (this character was found in no other species); the shape of the receptaculum seminis and the number of spinoid setae are diagnostic.

Diagnosis:

M. osthelderi : Bavaria, national park Berchtesgaden, Klausbach valley, 900 m, 2002.05.02, leg. Alfred Haslberger, coll. Michael Kurz M. schaefferi, : Salzburg, Hohe Tauern, Stubach valley, Enzingerboden, 1500 m, 1994.05.13, coll. Michael Kurz M. osthelderi, -genitalia, prep.-no. 310, M.Kurz: "Gradenalm; M.6.1892; Hauder", ID-Nr. MK-2.66, coll. Oberösterreichisches Landesmuseum, Linz M. schaefferi, -genitalia, prep.-no. 255, M.Kurz: "Kasern, Fasanhügel; 15.5.1972; Salzburg Austria; leg. Fritz Mairhuber", coll. Haus der Natur, Salzburg
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
   
M. osthelderi, -genitalia, prep.-no. 259, M.Kurz: "Golling - A Bluntautal; 06.5.1972; Salzburg Austria; leg. Fr. Mairhuber", coll. Haus der Natur, Salzburg M. schaefferi, -genitalia, prep.-no. 361, M.Kurz: "Roding; 26.04.1987; NELWEK", coll. Kurz    
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
   

M. osthelderi can easily be separated from all other similar species, including M. schaefferi, by its broad, dark golden colouration at the forewing base, and by its fascia at 1/4, which is not brightened in the middle but shows the same (bronzy) golden colouration as the inner margin. Poorly preserved specimens can easily be recognized by the very characteristic male and female genitalia.

Phylogeny: We do not know of any close relatives of M. osthelderi. Judged from the structure of the male genitalia however, there seems to be some correlation to the Asian species Micropterix turkmeniella Kuznetsov, 1960 and Micropterix hyrcana Zagulajev, 1995. Micropterix trinacriella Kurz, Zeller & Kurz, 1997 from Sicily too, shows some overall similarity in the male genitalia.

Worth knowing:

Sources:

Heath, J. 1975. The ammanella complex of the genus Micropterix Hübner [1825] (Lepidoptera: Zeugloptera, Micropterigidae). Entomologist´s Gazette 26: 253–258.
Karsholt, O. & E. J. van Nieukerken 2011. Psychidae. In - Karsholt, O. & E. J. van Nieukerken (eds.). Lepidoptera, Moths. – Fauna Europaea version 2.4., http://www.faunaeur.org [online 12 March 2012].
Kurz, M. A. & M. E. Kurz 2000–2012. Naturkundliches Informationssystem. – URL: http://www.nkis.info [online 12 March 2012].

Publication data:

history:
Kurz Michael: 2004.04.18
Zeller Christof: 2006.11.27
Kurz Michael: 2008.11.19
Kurz Michael: 2012.03.12
Kurz Michael: 2012.04.24
not reviewed

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