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

Incurvaria stangei Rebel, 1903

(zoological nomenclature: valid name, available)

General information:

Incurvaria stangei Rebel, 1903: 102-103
Type locality: Italy, Southern Tyrol, Tschierspitze, 2500 m
Type: Holotype : Italy, Southern Tyrol, Corvara, Tschierspitze, 2500 m, 1902.07.31, leg. Stange; coll. NHMW

Synonyms, misspellings, wrong determinations, etc.:
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Karsholt & Nieukerken (2010) erronously cite the original combination as Lampronia stangei Rebel, 1903 and consequently place the species in Lampronia Stephens, 1829.

Habit:

   
: Friuli-Venezia Giulia, near Udine, Mte. Sernio, Forcella Nuviernulis, 1700 m, 1988.07.16, leg. Peter Huemer, coll. Tiroler Landesmuseum Ferdinandeum : Lombardia, near Bergamo, Alpi Orobie, Pzo. Arera, 2500 m, 1992.07.20, leg. Huemer & Tarmann, coll. Tiroler Landesmuseum Ferdinandeum    
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
   

Description of adults:
Examined: 1 , 1 . Forewing length: 6.8 mm, 5.75 mm. Head dark brown; vestiture of hair-like scales on the head dirty white, distant; face similar; collare dirty white, mixed brownish; eyes semiglobular, brown, about 0.30 - 0.35 mm in diameter; distance of eyes (frontally) about 0.6 mm; labial palpi slightly diverging, straight ahead or slightly hanging, about 0.6 mm long, distantly scaled dirty white; antennae about 3/5 of forewing length, brown, simple, delicately ciliated; thorax and tegulae dark brown; forewings dark brown, intensely bronzy golden shining, with sharply defined, silvery white markings: a short, outwardly directed streak from the basis in the middle of the wing; a narrow to moderately broad transverse fascia at about 1/4 across the whole wing width, inwardly oblique towards the costa; a broad, elongate, outwardly directed spot at 1/2, reaching from costa across slightly more than half of the wing width, sometimes interrupted medially; a narrow, transverse fascia across the whole wing width at about 3/4, bent at costa, from there inwardly oblique; in the middle of the wing, close to the outer margin a short, very narrow transverse streak, sometimes dissolved into tiny spots; fringe consisting of two rows of scales, the proximal row brown with bronzy golden shimmer, the distal row white, light coppery towards the tornus; hindwings with moderately broad scales nearly completely covering the wing membrane, light grey to brownish grey with intense, silvery to nacre-like glance; anterior margin diffuse silvery white from the basis to 2/3; fringe also consisting of two rows of scales, the proximal row brownish to coppery, the distal row whitish to light coppery; underside light greyish brown with intense, coppery to nacre-like glance; markings of forewing upperside indistinctly shimmering through; underside of thorax dirty white to beige; legs also dirty white to beige, tibiae and tarsi brownish beige; foretibia without epiphysis; midtibia with a pair of spurs at the distal end; hindtibiae thickened, with a long tuft of hair-like scales and a pair of spurs each at about 0.45 of the tibial length and at the distal end; abdomen dark brown with a faint coppery shimmer.

Distribution:

I. stangei has been found so far in Italy on (Karsholt & Nieukerken 2010), but is also known from Slovenia and Austria. It is endemic to the south-eastern Alps. The vertical distribution reaches from 1250 - 2500 m a.s.l. to present knowledge (Huemer 1991, Kurz & Kurz 2012).

Biology:

   
. Austria, Eastern Tyrol, Lienzer Dolomiten, Lavanter Almtal, 1250 m, 2012.07.27, leg. et coll. Helmut Deutsch . Austria, Eastern Tyrol, Lienzer Dolomiten, Lavanter Almtal, 1250 m, 2012.07.27, leg. et coll. Helmut Deutsch    
Picture from: © Deutsch Helmut
Detailed view
Picture from: © Deutsch Helmut
Detailed view
   

Huemer (1991) has found the species along the border of alpine elfin woodland and grassy heathland. The imagines are on the wing in July and fly in the morning (Huemer 1991, Kurz & Kurz 2012).

Stages in development:

The early stages are unknown (Huemer 1991).

Anatomy:

 
-genitalia, prep.-no. 932, M. Kurz: Lombardia, Prov. Bergamo, Alpi Orobie, Pzo. Arera, 2500 m, 1992.07.20, leg. Huemer Peter & Gerhard Tarmann, coll. Tiroler Landesmuseum Ferdinandeum, Innsbruck -genitalia, bursa copulatrix: same preparation -genitalia, tip of ovipositor: same preparation  
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
 

genitalia. Posterior part of ovipositor triangular, tip rounded, lateral margins concave with two steps; apophyses posteriores and anteriores both relatively long, with blunt ends; ductus bursae as well as bursa copulatrix short, the latter bulky and without signa; ductus spermathecae with several convolutions.

Diagnosis:

   
I. stangei : Friuli-Venezia Giulia, near Udine, Mte. Sernio, Forcella Nuviernulis, 1700 m, 1988.07.16, leg. Peter Huemer, coll. Tiroler Landesmuseum Ferdinandeum, Innsbruck I. stangei -genitalia, prep.-no. 932, M. Kurz: Lombardia, Prov. Bergamo, Alpi Orobie, Pzo. Arera, 2500 m, 1992.07.20, leg. Huemer Peter & Gerhard Tarmann, coll. Tiroler Landesmuseum Ferdinandeum, Innsbruck    
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
   

Due to its characteristic wing markings, the species is unmistakable.

Phylogeny: The structures of the female genitalia clearly place the species in the family Incurvariidae. This is indicated especially by the absence of signa in the female genitalia.

Worth knowing:

Sources:

Huemer, P. 1991. Incurvaria stangei REBEL, 1903, ein bemerkenswerter Kleinschmetterling aus den Südalpen (Lepidoptera, Incurvariidae). Berichte des naturwissenschaftlich-medizinischen Vereins in Innsbruck 78: 173-175.
Karsholt, O. & E. J. van Nieukerken 2010. Prodoxidae. In - Karsholt, O. & E. J. van Nieukerken (eds.). Lepidoptera, Moths. – Fauna Europaea version 2.2, http://www.faunaeur.org [online 23 November 2010].
Kurz, M. A. & M. E. Kurz 2000–2012. Naturkundliches Informationssystem. – URL: http://www.nkis.info [online 05 December 2012].
Rebel, H. 1903. Neue Microheteroceren aus Österreich-Ungarn. Verhandlungen der kaiserlich-königlichen zoologisch-botanischen Gesellschaft in Wien 53: 90-103.

Publication data:

history:
Kurz Michael: 2007.01.29
Kurz Michael: 2009.11.26
Kurz Michael: 2010.11.23
Kurz Michael: 2012.12.05
Kurz Michael: 2018.09.13
Kurz Michael: 2018.10.05
not reviewed

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