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 croatica Heath & Kaltenbach, 1984

(zoological nomenclature: valid name, available)

General information:

Micropterix croatica Heath & Kaltenbach, 1984: 21 - 22, fig. 1, 2
Type locality: Croatia, Novi Vinodolski
Type: Holotype : Yugoslavia: Novi Vinodolski, 50 m (UTM grid. ref. 33T VK89), Buschwald, 18.V.1978 (Rösler & Küppers), (genitalia investigation Th.Kaltenbach GU 75); in coll. LNK, Karlsruhe

Synonyms, misspellings, wrong determinations, etc.:
Micropterix rablensis Zeller, 1868 sensu Heath, 1965b: 641, 646 (part.): Missidentification

Habit:

   
: Croatia, Istria, near Opatija, Ucka, 2001.06.23, leg. Hausenblas & Zeller, coll. Michael Kurz : Italy, Triest, 1910.06.12, leg. Wolfschläger, coll. Zoologische Sammlung des Bayerischen Staates, Munich    
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
   

Scheme of wing pattern:

Description of adults: Examined: 18 , 5 . Forewing length: 2.6 - 3.3 mm; 3.3 - 3.6 mm. Head black-brown; vestiture of hair-like scales on the head dirty whitish to dark yellow; antennae brown, golden shining, 3/5 (), respectively, 1/2 () of forewing length; thorax bronzy golden, tegulae bronzy golden to coppery-purple, distad often mixed purple-violet; forewings brownish golden to purple violet, at basis of inner margin often lighter, coppery to bronzy golden; at apex, the purple colouration always most intensive and often with single blueish scales; wing markings whitish golden to golden, delicately bordered bronzy golden: At nearly 1/4 a broad fascia across the whole wing width, at costa distinctly constricted and bent outwards or even not reaching costal margin; a broad fascia across the whole wing width at nearly 1/2, straight or slightly bent outwards medially; at 3/4 a broad, oval spot across the whole wing width, sometimes not completely reaching outer margin; fringe whitish golden, basally tinged purple; hindwings bronzy golden, especially apically intensively tinged purple; fringe light bronzy golden, whitish outwards, basally often tinged purplish; legs and abdomen brown, golden shining.

Distribution:

M. croatica has been found so far near Triest in Italy, as well as in the north-western part of Croatia (Istria and northern adriatic coast, but also apart from the coast in Plitvice; see Kurz & Kurz 2010). Not surprisingly, Karsholt (2010) records the species also from Slovenia. Specimens, formerly identified by Heath (1965b) as Micropterix rablensis Zeller, 1868, turned out to belong to M. croatica (Zeller et al., 2002). Vertically, the distribution has been recorded from near sea level up to more then 1000 m a.s.l. (Kurz & Kurz 2010).

Biology:

In Plitvice, the species has been found on the flowers of wild roses at the edge of woodland. Following Heath & Kaltenbach (1984), M. croatica inhabits the mediterranean, evergreen shrubland. Imagines have been found on the wing from late April to early July, depending on the altitude (Kurz & Kurz 2010).

Stages in development:

The early stages are unknown.

Anatomy:

, scheme of cuticle -genitalia, prep.-no. 744, M. Kurz: Croatia, Istria, near Opatija, Ucka, 2001.06.23, leg. Hausenblas und Zeller, coll. Michael Kurz -genitalia, prep.-no. 584, M. Kurz: Friuli-Venezia Giulia, Triest, 1973.05.04, leg. J.Klimesch, coll. Michael Kurz -genitalia, prep.-no. 363, M. Kurz: "Triest; 12.4.10; Knitschke", 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, tip of aedeagus in higher magnification, prep.-no. 363, M. Kurz: "Triest; 12.4.10; Knitschke", coll. Oberösterreichische Landessammlung, Linz -genitalia, preparation in caustic potash, prep.-no. 963, M. Kurz: Friuli-Venezia Giulia, Triest, 1973.05.04, leg. J. Klimesch, coll. Michael Kurz -genitalia, permanent preparation, prep.-no. 963, M. Kurz: Friuli-Venezia Giulia, Triest, 1973.05.04, leg. J. Klimesch, coll. Michael Kurz -genitalia, receptaculum seminis in higher magnification, prep.-no. 963, M. Kurz: Friuli-Venezia Giulia, Triest, 1973.05.04, leg. J. Klimesch, 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

Genitalia. Uncus very short, nearly atrophied, with broad and rounded tip; ventrally of uncus, inside tegumen, a tuft of long, hair-like setae; tegumen much pronounced, its distal margin formed by the very broad accessory claspers, the margin bearing in ventral part at inner surface a row of single, very short, spinoid setae; a second, similar row of setae proximally of the first, nearly atrophied; valves moderately long, slender, medially constricted, the distal part spatulate and slightly bent upwards; valves at inner surface from postbasal to middle with a row of five short, straight, stout and thickened setae, in distal fifth with a row of fine long setae and two rows of short, straight, stout and thickened setae.

Genitalia. Tergite IX missing; sternite IX reduced, slightly narrowed medially, with indistinct lateral margins; segment X with band-like sclerotization, consisting of two broader platelets, not very diagnostic; receptaculum seminis very short, constricted in distal half, bag-like inflated in proximal half, with distinct striation.

Diagnosis:

M. croatica : Croatia, Istria, near Opatija, Ucka, 2001.06.23, leg. Hausenblas & Zeller, coll. Michael Kurz M. rablensis : Italy, Friuli-Venezia Giulia, Tarvisio, Lago del Predil, 2001.06.30, leg. Zeller & Kurz, coll. Michael Kurz M. myrtetella s.str. : Lower Austria, Wiener Becken, Gumpoldskirchen, 1941.06.25, coll. NHMW, Vienna M. croatica -genitalia, prep.-no. 744, M. Kurz: Croatia, Istria, near Opatija, Ucka, 2001.06.23, leg. Hausenblas und Zeller, 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. rablensis -genitalia, prep.-no. 787, M. Kurz: Styria, near Graz, Gösting, [? 18]66.06.20, coll. NHMW, Vienna M. myrtetela s.str. -genitalia, prep.-no. 754, M. Kurz: Croatia, Kvarneric islands, Krk, Baska, 2002.04.30, leg. Jan Liska, coll. Jan Liska M. croatica -genitalia, prep.-no. 963, M. Kurz: Friuli-Venezia Giulia, Triest, 1973.05.04, leg. J. Klimesch, coll. Michael Kurz M. rablensis -genitalia, prep.-no. 814, M. Kurz: Italy, Friuli-Venezia Giuglia, near Tarvis, Lago del Predil, 2001.06.30, leg. Zeller & Kurz, 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. myrtetella f. idae -genitalia, prep.-no. 896, M. Kurz: Greece, Peloponnesos, Taygetos, Kastanea, 1999.05.24, leg. Puchmayr & Kurz, coll. Michael Kurz      
Picture from: Kurz Michael
Detailed view
     

Externally, M. croatica is very similar to Micropterix rablensis Zeller, 1868. It can be distinguished by its more intensive purple-violet ground colour with more distinctly bordered fasciae. A small costal spot at 2/3, sometimes present in M. rablensis, has not been found in M. croatica. From Micropterix myrtetella myrtetella Zeller, 1850, the species can be distinguished readily by the fascia at 3/4, which reaches across the whole wing width in M. croatica, but only across half of the wing width in M. myrtetella.
In the male genitalia, the differences between the three species are delicate, but distinct: The uncus in M. croatica is nearly atrophied and thus even shorter than in the other two species. The accessory claspers are more rounded, the row of stout and thickened setae is more reduced. On the valves, the row of stout and thickened setae is extending nearly to the basis, like in M. myrtetella, but the whole apparatus is distinctly more slender and less stout in that species. In the female genitalia, M. croatica can readily be distinguished from M. rablensis by the form of sternite IX, but from M. myrtetella a separation is not possible with certainty.

Phylogeny: The three species M. rablensis, M. croatica and M. myrtetella form a complex of closely allied, small species, which is characterized by the reduced uncus and the much pronounced tegumen in the male genitalia, the accessory claspers only forming the anterior margin of the tegumen. An apomorphy of this complex is probably also the reduction of modified setae on the accessory claspers, which are traceable only in M. rablensis. Although the placement of the species-complex in the so-called tunbergella-group seems to be unquestionable, its sister-group is still unclear.

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.
Heath, J. & Th. Kaltenbach 1984. New species of Micropterix Hübner (Lepidoptera; Zeugloptera: Micropterigidae) from Italy and Yugoslavia; Entomological Gazette 35: 21 - 23
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 16 June 2010].
Kurz, M. A. & M. E. Kurz 2000–2010. Naturkundliches Informationssystem. – URL: http://www.nkis.info [online 16 June 2010].
Zeller-Lukashort, H. C., M. E. Kurz & M. A. Kurz 2002. Neue Funddaten von Arten der Gattung Micropterix Hübner, [1825] (Lepidoptera: Micropterigidae). – Zeitschrift der Arbeitsgemeinschaft Österreichischer Entomologen 54: 35–38.

Publication data:

history:
Kurz Michael: 2009.03.05
Kurz Michael: 2010.06.16
Kurz Michael: 2012.05.05
Kurz Michael: 2012.07.09
Kurz Michael: 2012.07.16
Document reviewed by:
not reviewed: 2012.07.16
Document released by:
Kurz Michael: 2012.07.16

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