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 corcyrella Walsingham, 1919

(zoological nomenclature: valid name, available)

General information:

Micropteryx corcyrella Walsingham, 1919: 11
Type locality: Greece, Corfu, Palaeocastrizza
Type: Holotype : "Korfu; 1872"; in coll. BMNH

Synonyms, misspellings, wrong determinations, etc.:
Micropterix jeanneli sensu auctorum nec Viette, 1949. Missidentification.
Micropterix corcyrella cephaloniensis Kurz, Kurz & Zeller, 2004: 61-63. Type locality: Greece, Ionian islands, Cephalonia, between Sparthi and Poros. Subspecific.

Habit:

 
M. corcyrella corcyrella : Macedonia, Treska-Schlucht, 1959.04, leg. Klimesch, coll. Zoologische Sammlung des Bayerischen Staates, Munich M. corcyrella corcyrella : Macedonia, Treska-Schlucht, 1959.04, leg. Klimesch, coll. Zoologische Sammlung des Bayerischen Staates, Munich M. corcyrella cephaloniensis PARATYPE: Greece, Ionian islands, Cephalonia, between Sparthi and Poros, 2001.04.14, leg. Flint O.S. Jr., 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: 6 , 7 (incl. types of both subspecies). Forewing length: 3.3 - 3.5 mm; 3.4 - 4.0 mm. Head black, vestiture of hair-like scales on the head dirty ochre to dark yellow; antennae dark brown, golden shining, 4/5 (), respectively, slightly more than 1/2 () of forewing length; thorax and tegulae bronzy golden, posteriorly purple to bluish; forewings of male bronzy golden to coppery, at distal part of costa and at apex often slightly tinged purple; wing markings silvery white, sharply defined; at 1/4 a narrow, straight fascia across the whole wing width; a similar fascia at slightly more than 1/2, slightly outwardly oblique towards inner margin; at 3/4 an elongate, more or less kidney-like spot, from costa inwardly oblique towards center of wing; sometimes a light golden suffusion along outer margin; forewings of female either of the same colouration as in the male (typical form) or bronzy golden without any further markings, but with narrow reddish margins (ssp. cephaloniensis); fringe bronzy golden, sometimes purplish basally; hindwings coppery; fringe coppery, outwardly golden; legs and abdomen dark brown, golden shining.

Distribution:

Karsholt (2010) reports the species from Serbia and Montenegro, Bulgaria, Macedonia, Greece and Slovenia. The records from Montenegro refer, at least partly, to Micropterix jeanneli Viette, 1949, which, to our opinion, is not at all conspecific with M. corcyrella (see diagnosis). Furthermore, the records from Slovenia also seem to be very doubtful. We have investigated specimens from Macedonia and Greece (typical subspecies from Corfu and ssp. cephaloniensis Kurz, Kurz & Zeller, 2004 from the Ionian island Cephalonia, see also Kurz & Kurz 2010).

Biology:

There aren´t any data available concerning the biology of M. corcyrella. The imagines have been caught in April (Kurz & Kurz 2010).

Stages in development:

The early stages are unknown.

Anatomy:

 
M. corcyrella corcyrella -genitalia, prep.-no. 482, M. Kurz: Macedonia, near Skopje, Treska Schlucht, 1959.04, leg. J.Klimsch, coll. Michael Kurz M. corcyrella cephaloniensis -genitalia, prep.-no. 753, M. Kurz, PARATYPE: Greece, Ionian islands, Cephalonia, between Sparthi and Poros, 2001.04.14, leg. Flint O.S., Jr., coll. Michael Kurz M. corcyrella corcyrella -genitalia, prep.-no. 495, M. Kurz: "MACEDONIA, Matka; Treska Schl.[ucht]; IV.1959; J.Klimesch", coll. Zoologische Sammlung des Bayerischen Staates, Munich  
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
 

Genitalia. Uncus moderately long and slender; accessory claspers reduced, bent upwards inside the tegumen; on their posterior margin about 10 inwardly directed, long and stout, thickened setae with hook-like tips; distal margin of the tegumen on both sides enlarged to a sclerotized lobe, bearing on its anterior margin two rows of stout and thickened setae; proximad, the row consists of very short, unmodified setae, whereas the distal row consists of 16 - 18 very long, straight setae, which are more or less broadened at their tips; beneath these lobes and somewhat proximad a second pair of small sclerotized lobes, bearing similar rows of stout an thickened setae; here, the distal row consisting only of 5 very long setae; valves moderately short, stout, constricted in the middle, their distal ends spatulate und slightly bent upwards; at the inner surface of the valves postbasally two short and stout, thickened setae, their spatulate tips with two rows of short to moderately long, stout and thickened seate, as well as some longer setae.

Genitalia. Tergite IX missing; sternite IX strongly reduced; constricted in the middle, weakly sklerotized, with indistinct lateral and proximal margins; papillae anales with a pair of characteristic, paddle-like and well sclerotized platelets; receptaculum seminis moderately long and very slender, distinctly constricted at about 1/4 of its length; striation of the receptaculum only weakly visible.

Diagnosis:

M. corcyrella corcyrella : Macedonia, Treska-Schlucht, 1959.04, leg. Klimesch, coll. Zoologische Sammlung des Bayerischen Staates, Munich M. jeanneli PARATYPE: Montenegro, Prokletije, near Gusinje, Vusanje, July, coll. NHMW, Vienna M. aruncella ssp.? : Italia, Abruzzo, Montagna della Maiella, 1982.07.13, leg. Klimesch, coll. Zoologische Sammlung des Bayrischen Staates, Munich M. corcyrella cephaloniensis PARATYPE: Greece, Ionian islands, Cephalonia, between Sparthi and Poros, 2001.04.14, leg. Flint O.S. Jr., 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. aruncella : Austria, Salzburg, Thalgau, 1989.05.18, leg. et coll. Michael Kurz M. corcyrella corcyrella -genitalia, prep.-no. 482, M. Kurz: Macedonia, near Skopje, Treska Schlucht, 1959.04, leg. J.Klimsch, coll. Michael Kurz M. aruncella -genitalia, prep.-no. 886, M. Kurz: Greece, Mt. Olympos, Kataphyg., 2000 m, 1962.06.28, leg. Klimesch Josef, coll. Zoologische Sammlung des Bayrischen Staates, Munich M. corcyrella cephaloniensis -genitalia, prep.-no. 753, M. Kurz, PARATYPE: Greece, Ionian islands, Cephalonia, between Sparthi and Poros, 2001.04.14, leg. Flint O.S., Jr., 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. 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
     

Within its assumed distribution range, the typical form M. corcyrella corcyrella Walsigham, 1919 may be mistaken for Micropterix jeanneli Viette, 1949 only. This taxon however, is distinctly larger than M. corcyrella, having about 2 mm more in wingspan. Furthermore, the ground plan of its wing pattern is distinctly different from that of M. corcyrella, in that M. jeanneli shows the small costal spot at 3/5 (identical with the spot, that is found in other species between the fascia at 1/2 and the spot at 3/4), and misses the spot at 3/4, whereas M. corcyrella has a prominent spot at 3/4, but never the small costal spot at 3/5. Differences to similar, but allopatric species from Italy are treated under the typical form (see there). Micropterix corcyrella cephaloniensis Kurz, Kurz & Zeller, 2004 from the Ionian island of Cephalonia, on the other hand resembles closely Micropterix aruncella (Scopoli, 1763), even in its sexual dichroism. Nevertheless, the male and female genitalia of M. corcyrella are very distinctive und unmistakeable for any other species.

Phylogeny: The phylogenetic position of M. corcyrella within the genus is unclear. We do not know of any similar species with respect to the genitalia. In the male genitalia, there are tiny twisted "accessory claspers" with long spinoid setae within the uncus-tegumen-complex, whereas the lobes, also bearing long, spinoid setae at the distal margins of the tegumen are interpreted as descendants of the lobes, which originally were situated between uncus and accessory claspers. For that reasons, we believe, that M. corcyrella could be a member of the so-called aureatella-group of Micropterix. Their members have in common, that the lobes between uncus and accessory claspers are more or less enlarged, whereas the accessory claspers themselves are reduced more or less. So far, these assumptions have not been confirmed by DNA-investigations.

Worth knowing:

Sources:

Karsholt, O. 2010. 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 2.2, http://www.faunaeur.org [online 18 November 2010].
Kurz, M. A. & M. E. Kurz 2000–2010. Naturkundliches Informationssystem. – URL: http://www.nkis.info [online 18 November 2010].
Walsingham, T.d.G. Lord 1919. New species of Aristotelia and Micropteryx. — The Entomologist´s Record and Journal of Variation 31 (1): 10-12.

Publication data:

history:
Kurz Michael: 2010.11.18
Kurz Michael: 2010.12.02
Kurz Michael: 2011.01.11
Kurz Michael: 2011.02.01
Kurz Michael: 2011.12.06
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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