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 facetella Zeller, 1851

(zoological nomenclature: valid name, available)

General information:

Micropteryx facetella Zeller, 1851: 361.
Type locality: Croatia, Dalmatia
Type: Holotye : Dalmat. lit. IX, 50.10086, genitalia prepartion J. Heath no. 195, in coll. BMNH, London

Synonyms, misspellings, wrong determinations, etc.:
Micropteryx pistaciella Krone, 1908: 119-120, pl. 1, fig. 9. Type locality: Croatia, Dalmatia, Gravosa. Junior subjective synonym.
Micropterix balcanica Heath, nomen nudum

Habit:

 
: Croatia, Dalmatia, near Dubrovnik, Cilipi, Komaji, 2003.05.03, leg. Christof Zeller & Michael Kurz, coll. Michael Kurz : Croatia, Dalmatia, Split, 1853, leg. Lederer, coll. Michael Kurz : Montenegro, Herceg-Novi, Igalo, 2003.05.02, leg. Christof Zeller & Michael Kurz, coll. Michael Kurz  
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
 

Scheme of wing pattern:

Description of adults: Examined: 5 , 5 . Forewing length: 3.7 - 4.4 mm; 4.1 - 5.2 mm. Head dark brown; vestiture of hair-like scales on the head yellow; antennae reddish brown, bronzy golden shining, about 4/5 (), respectively, slightly more than 1/2 () of forewing length; thorax golden to bronzy golden, sometimes purple distad; tegulae bronzy golden to purple violett, partly mixed with single blueish scales; forewings broad golden to bronzy golden at inner margin from basis to medial fascia, otherwise reddish bronzy golden to purple violet, mostly at least with a variable purplish tinge basally; apex and outer margin bronzy golden, leaving only the outermost tip of the wing purple; markings whitish golden to golden; at nearly 1/4 a moderately broad fascia from costa to bronzy golden inner margin, at costa distinctly constricted or even obsolete; a somewhat irregular, medially sometimes constricted and slightly outwardly bent fascia at nearly 1/2 across the whole wing width, slightly oblique towards inner margin; a small costal spot at 3/5; at 3/4 an oval spot, reaching from costa across half of the wing width, sometimes fused with the bronzy golden apex or outer margin along costa or along outer margin; all markings often somewhat diffuse and indistinctly bordered bronzy golden; fringe bronzy golden, whitish outwards; hindwings bronzy golden, especially apically more or less tinged reddish to purple; fringe bronzy golden, lighter outwards; legs and abdomen brown, golden shining.

Distribution:

Karsholt (2004) reports the species from Slovenia and Croatia. Heath (1965b) has reported the species additionally from Montenegro, but also from Italy (Friuli, Gemona), the latter record most probabely being based on a missidentification. The investigated specimens are from Croatia and Montenegro. Vertically, records are known from near sea level up to slightly above 400 m a.s.l. (Kurz & Kurz 2010).

Biology:

 
Biotope: Croatia, Dalmatia, near Dubrovnik, between Trsteno and Majkovi, 2003.05.03 Montenegro, Herceg-Novi, Igalo, above the village, 2003.05.02 Montenegro, Herceg-Novi, Igalo, above the village, 2003.05.02  
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
 

M. facetella has been found at the edge of dense mediterranean shrubs or evergreen woods, often on steep slopes or in rocky places, but with at least partly shady conditions. Here the larvae may find long enough enduring moisture in the soil, which is known for other species to be vital. The imagines are on the wing in late April and in May (Kurz & Kurz 2010).

Stages in development:

The early stages are unknown.

Anatomy:

, scheme of cuticle -genitalia, prep.-no. 685, M. Kurz: "YU; Dalmatien, St. Sibenik; Straße E27 - leg. R.Sutter; 50 m, 11.4.1990", coll. R. Sutter -genitalia, prep.-no. 956, M. Kurz: Croatia, Dalmatia, near Dubrovnik, between Trsteno and Majkovi, 2003.05.03, leg. Zeller & Kurz, coll. Michael Kurz , scheme of cuticle
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. 315, M. Kurz: "M.pistaciel[la]; Gravosa; April, Krone", coll. Oberösterreichische Landessammlung, Linz -genitalia, preparation in caustic potash, prep.-no. 957, M. Kurz: Montenegro, Herceg-Novi, Igalo, 2003.05.02, leg. Zeller & Kurz, coll. Michael Kurz -genitalia, permanent preparation, prep.-no. 957, M. Kurz: Montenegro, Herceg-Novi, Igalo, 2003.05.02, leg. Zeller & Kurz, coll. Michael Kurz -genitalia, receptaculum seminins in higher magnification, prep.-no. 362, M. Kurz: "M.pistaciel[la]; Gravosa; 25.4. Krone", coll. Oberösterreichische Landessammlung, Linz
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. Uncus very long and slender; acessory claspers elongated, apically with small, pouch-like lobes; at the margin nearest to the valves, a long row of moderately long, mostly straight, stout and thickened setae, their tips somewhat bent backwards; at the inner surface of the accessory claspers another long row of shorter, Y- to T-shaped, stout and thickened setae; valves long, somewhat stout, somewhat constricted immediately before the upwardly bent distal end, which is shaped spoon-like; valves at the inner surface postbasally with 3 - 4 very long, straight, stout and thickened setae, as well as some normal setae; the distal end at the inner surface with numerous setae, as well as a group of moderately long, straight, stout and thickened setae.

Genitalia. Sternite 8 with characteristic, net-like structure; tergite IX missing; sternite IX much reduced, similar to Micropterix schaefferi Heath, 1975, but medially distinctly narrower; papillae anales with band-like sclerotization of no diagnostic value; ductus seminalis without a straight part at the onset of the receptaculum; receptaculum seminis relatively short, distinctly striated and with a small appendix at the proximal end.

Diagnosis:

M. facetella : Croatia, Dalmatia, near Dubrovnik, Cilipi, Komaji, 2003.05.03, leg. Christof Zeller & Michael Kurz, coll. Michael Kurz M. schaefferi : Salzburg, Hohe Tauern, Stubach valley, Enzingerboden, 1500 m, 1994.05.13, coll. Michael Kurz M. aureoviridella : Salzburg, Flachgau, Thalgau, Schober, 1988.06.17, leg. Kurz & Kurz, coll. Michael Kurz M. maschukella : Russia, Caucasus, Teberda-Turba, 1972.07, leg. Eichler, coll. Zoologische Sammlung des Bayrischen Staates, Munich
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. facetella -genitalia, prep.-no. 956, M. Kurz: Croatia, Dalmatia, near Dubrovnik, between Trsteno and Majkovi, 2003.05.03, leg. Zeller & Kurz, coll. Michael Kurz M. schaefferi -genitalia, prep.-no. 715, M. Kurz: Lombardia, vicinity of Como, near Cavargna, 1997.05.03, coll. Michael Kurz M. aureoviridella -genitalia, prep.-no. 778, M. Kurz: Salzburg, Hohe Tauern, Habachtal, near Gasthaus Enzian, 2004.07.17, coll. Michael Kurz M. maschukella -genitalia, prep.-no. 738, M. Kurz: Georgia, Abchasia, near Suchumi, military road near Lata, Kobori valley, 1974.06.10, leg. Franz Eichler, coll. Michael Kurz
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. facetella -genitalia, prep.-no. 957, M. Kurz: Montenegro, Herceg-Novi, Igalo, 2003.05.02, leg. Zeller & Kurz, coll. Michael Kurz M. schaefferi -genitalia, prep.-no. 361, M. Kurz: Salzburg, Alpine foothills, Bürmoos, Roding, 1987.04.26, leg. H. Nelwek, coll. Michael Kurz M. aureoviridella -genitalia, prep.-no. 810, M. Kurz: Osttirol, Glocknergruppe, Kals, Moar Alm, 1800 - 2000 m, 2002.06.27, leg. Helmut Deutsch, coll. Michael Kurz M. maschukella -genitalia, prep.-no. 734, M. Kurz: Russia, Caucasus, Teberda, Narsikol valley, eastern slope, 1976.08.12, leg. Franz Eichler, coll. Michael Kurz
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view

Externally, M. facetella can be distinghuished from other similar species like Micropterix schaefferi Heath, 1975 often by the less intense purple colouration of the forewings and the less pronouced or missing bronzy golden colouration along the outer margin. Micropterix aureoviridella (Höfner, 1898), being similar in the ground colour, misses the small costal spot at 3/5. Furthermore, its fasciae mostly are even more indistinct.
In the male genitalia, M. facetella is recognized easily by its long uncus and the form of the accessory claspers, whereas in the female genitalia, the net-like structure on sternites 7 and 8 is very characteristic.

Phylogeny: Judged from the male genitalia, we do not know any close relatives of M. facetella so far. There seem to be some structural similarities to Micropterix maschukella Alpheraky, 1870, but no common apomorphies have been identified. The well developed, modified setae on the accessory claspers place the species in the so-called "tunbergella-group".

Worth knowing:

Sources:

Heath, J. 1965b. Ergebnisse der Albanien-Expedition 1961 des Deutschen Entomologischen Institutes, 33. Beitrag, Lepidoptera: Micropterigidae. – Beiträge zur Entomologie 15: 641–647.
Karsholt, O. 2004. Families Acanthopteroctetidae, Axiidae, Castniidae, Cossidae, Drepanidae, Eriocottidae, Eriocraniidae, Gelechiidae, Heterogynidae, Limacodidae, Lypusidae, Micropterigidae, Roeslerstammiidae, Somabrachyidae, Uraniidae. In: Karsholt, O. & E. J. van Nieukerken (eds.). Lepidoptera, Moths. – Fauna Europaea version 1.1, http://www.faunaeur.org [online 22 January 2009].
Krone, W. 1908. Zwei neue Microlepidopteren. Jahresbericht des Wiener entomologischen Vereins 18: 119-121, pl. 1.
Kurz, M. A. & M. E. Kurz 2000–2010. Naturkundliches Informationssystem. – URL: http://www.nkis.info [online 16 June 2010].
Zeller, P. C. 1851. Drei Schabengattungen: Incurvaria, Micropteryx und Nemophora; Linnaea Entomologica 5, p. 301 - 362, pl. 1.

Publication data:

history:
Kurz Michael: 2009.01.22
Kurz Michael: 2010.01.09
Kurz Michael: 2010.06.18
Kurz Michael: 2011.12.22
Kurz Michael: 2011.12.23
Kurz Michael: 2012.02.19
Kurz Michael: 2012.02.20
Kurz Michael: 2012.03.23
Document reviewed by:
not reviewed: 2012.03.23
Document released by:
Kurz Michael: 2012.03.23

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