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 fenestrellensis Heath & Kaltenbach, 1984

(zoological nomenclature: valid name, available)

General information:

Micropteryx fenestrellensis Heath & Kaltenbach, 1984: 22–23, figs. 3–4.
Type locality: Italy, Piemonte, Val Chisone, Fenestrelle
Type: Holotype: Alpi Cozie, Val Chisone, Fenestrelle, 1300 m, leg. Della Beffa, agosto 1923 (examination of genitalia Kaltenbach GU 204); in coll. MSNV, Verona.

Synonyms, misspellings, wrong determinations, etc.:
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Habit:

   
: Piemonte, Val Chisone, Fenestrelle, 1600 m, 2002.07.25, leg. Renate Hausenblas und Christof Zeller, coll. Christof Zeller : Piemonte, Val Chisone, Fenestrelle, 1500 m, 2002.07.26, leg. Renate Hausenblas und Christof Zeller, coll. Christof Zeller    
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
   

Scheme of wing pattern:

Description of adults: Examined: 1 , 5 . Forewing length: 3.3 mm; 3.0–3.2 mm. Head black-brown, vestiture of hair-like scales on the head black; antennae dark-brown with a weak coppery tinge, about 3/4 (), respectively, 2/3 () of forewing length; thorax anteriorly bronzy golden, posteriorly purple to purplish violet; tegulae purple-violet; forewing bronzy golden to reddish bronzy golden, purple at base of costa, sometimes reddish along costa, with silvery white markings: An oval to longish, oblique spot near 1/4, not reaching costa and inner margin; a narrow fascia at 1/2, slightly bent outwards across the whole width of the wing; a round spot at 3/4 across the half width of the wing, near, but not quite reaching costa; fringe coppery bronzy golden, lighter outside; hindwing bronzy golden, with a purple tinge, especially at apex; fringe coppery with lighter tip; legs and abdomen dark brown, golden shining.

Distribution:

So far, this species has been recorded only from the type locality (Italy, Piemonte, Fenestrelle, 1300–1600 m) and from Monte Tanarello (border area between France and Italy, La Brigue, 2000 m) (Heath & Kaltenbach 1984, Zeller et al. 2007, Kurz & Kurz 2011).

Biology:

At the type locality, the species occurs together with Micropterix trifasciella Heath, 1965 in tall herbaceous vegetation around bushes. The imagines fly in July and early August (Heath & Kaltenbach 1984, Zeller et al. 2007, Kurz & Kurz 2011).

Stages in development:

The early stages are unkown.

Anatomy:

-genitalia (uncus broken!), prep.-no. 785, M. Kurz: Piemonte, Val Chisone, Fenestrelle, 1600 m, 2002.07.25, leg. Renate Hausenblas, Christof Zeller, coll. Christof Zeller -genitalia, prep.-no. 817, preparation in caustic potassium, M. Kurz: Piemonte, Val Chisone, Fenestrelle, 1500 m, 2002.07.26, leg. Hausenblas/Zeller, coll. Christof Zeller -genitalia, prep.-no. 817, M. Kurz: Piemonte, Val Chisone, Fenestrelle, 1500 m, 2002.07.26, leg. Hausenblas/Zeller, coll. Christof Zeller -genitalia, receptaculum seminis in higher magnification, prep.-no. 817, M. Kurz: Piemonte, Val Chisone, Fenestrelle, 1500 m, 2002.07.26, leg. Hausenblas/Zeller, coll. Christof Zeller
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 moderately long, club-shaped, rounded; tegumen and accessory claspers fused together; accessory claspers broad, trapezoid; at the anterior margin at the tip of the accessory claspers a group of short, acute, bent spinoid setae, along the anterior margin a row of five longer, acute spinoid setae, the one or two distalmost distinctly separated; at the end of this row another group of a few short, acute, bent spinoid setae; valvae moderately long, somewhat stout, constricted medially, enlarged and spatulate at the end; on the inner surface two longer, acute, straight spinoid setae postbasally, a very short spinoid seta medially and two or three rows of short straight stout and thickened setae with some long setae at the end.

Genitalia. Tergite IX missing; sternite IX reduced to two very characteristic, elongated sclerotized platelets, which fuse together ventrally. Terminal papillae sclerotized in a band, somewhat bent outwards proximally; receptaculum seminis very long and slender, the second half enlarged, with typical striation.

Diagnosis:

M. fenestrellensis : Piemonte, Val Chisone, Fenestrelle, 1600 m, 2002.07.25, leg. Renate Hausenblas and Christof Zeller, coll. Christof Zeller M. aruncella : Italy, Friuli, near Tarvis, Cave del Predil, 900 m, 1996.06.15, coll. Michael Kurz M. fenestrellensis, -genitalia (uncus broken !), prep. no. 785, M. Kurz: Piemonte, Val Chisone, Fenestrelle, 1600 m, 2002.07.25, leg. Renate Hausenblas, Christof Zeller, coll. Christof Zeller M. aruncella, -genitalia, prep. no. 780, M. Kurz: Vorarlberg, Bregenzer Wald, near Mellau, way to the summit of the Hangspitze, 2004.08.07, 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. fenestrellensis, -genitalia, prep. no. 817, M. Kurz: Piemonte, Val Chisone, Fenestrelle, 1500 m, 2002.07.26, leg. Hausenblas/Zeller, coll. Christof Zeller M. aruncella, -genitalia, prep. no. 809, M. Kurz: Slovenia, Karst, Wippach valley, Nanos, 600 m, 1998.05.25, leg. Helmut Deutsch, coll. Michael Kurz    
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
   

Within its restricted distribution area, M. fenestrellensis can only be confused with Micropterix aruncella (Scopoli, 1763). The ground colouration of M. aruncella is generally less reddish, the silvery drawings are smaller and less distinct, and females do not show any markings at all. The male genitalia of M. fenestrellensis are very distinctive, and sternite IX of the female is also quite different from that in M. aruncella.

Phylogeny: Morphology of the male genitalia does not show a closer relationship to any other species in the genus, therefore the systematic position of M. fenestrellensis is quite unclear.

Worth knowing:

Sources:

Heath, J. & Th. Kaltenbach 1984. New species of Micropterix Hübner (Lepidoptera; Zeugloptera: Micropterigidae) from Italy and Yugoslavia. – Entomologist’s Gazette 35: 21–23.
Kurz, M. A. & M. E. Kurz 2000–2011. Naturkundliches Informationssystem. – URL: http://www.nkis.info [online 22 September 2011].
Zeller-Lukashort, H. C., M. E. Kurz, D. C. Lees & M. A. Kurz 2007: A review of Micropterix Hübner, 1825 from northern and central Europe (Micropterigidae); Nota lepidopterologica 30 (2): 235 – 298.

Publication data:

history:
Kurz Michael: 2006.04.18
Kurz Michael: 2006.11.28
Kurz Michael: 2008.11.18
Kurz Michael: 2011.09.22
Kurz Michael: 2011.12.07
Document reviewed by:
not reviewed: 2011.12.07
Document released by:
Kurz Michael: 2011.12.07

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