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

Adela croesella (Scopoli, 1763)

(zoological nomenclature: valid name, available)

General information:

Phalaena croesella Scopoli, 1763
Type locality: Slovenia, Carniola
Type: Lost or destroyed in coll. IEUP (Evenhuis 1997).

Synonyms, misspellings, wrong determinations, etc.:
Adela religatella Zeller, 1850

Habit:

   
: Salzburg, northern calcareous Alps, Thalgau, location 12/2, 1995.06.15, leg. et coll. Michael Kurz : Tuscany, near Pisa, Casciana Alta, 1995.05.07, leg. Hausenblas, Zeller, Kurz, coll. Michael Kurz    
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
   

Description of adults: Examined: 4 , 1 . Forewing length: 6.0 - 6.2 mm, 6.1 mm. Head black; vestiture of hair-like scales on the head yellow to brownish, mixed with single black setae; face with adpressed, metallic greenish-golden scales; eyes about 0.3 - 0.35 mm in diameter, not enlarged in males; distance of eyes (frontally) about 0.5 mm; labial palpi slender, 0.4 - 0.5 mm long, bowlike directed ahead or slightly hanging, with adpressed, shining yellowish-golden scales and some long black setae; terminal segment purple in the ; proboscis well developed, basally with golden shining scales; antennae of about 2 3/4 of forewing length, filiform; scapus strongly inflated, bronzy golden; flagellum purple proximally, distad from about 1/3 of its length whitish; 1 or 2 clamp-like sensory organs in the basal part of the flagellum; antennae of about 1 1/4 of forewing length; from the basis to about 2/3 of its length densely scaled with somewhat distant, dark brownish-violet scales, the distal part of the flagellum filiform, whitish; thorax with adpressed scales, bronzy golden shining, tegulae similar; forewings dark brownish-violet; slightly distal of 1/2 a moderately broad, yellow transverse fascia across the whole wing width, becoming broader towards the inner margin, delicately bordered dark violet-brown on both sides; immediately proximally and distally a purple-violet tansverse fascia each across the whole wing width, of similar width to the yellow fascia and scattered with few blue scales; the basal part of the wing intensively yellow between dark veins, the distal part of the wing similar, but colouration dark yellow, partly bronzy golden shining; these longitudinal markings sometimes only weakly developed or only slightly contrasting; fringe bronzy golden, partly mixed with purple; hindwings with broad scales, completely covering the wing membrane, brown-grey with purple, distally also violet shimmer; costal margin from basis to 2/3 whitish, the white stripe only indistinctly bordered; along the outer margin, at the basis of the fringe a delicate bronzy golden line; fringe bronzy golden, especially basally also mixed purple; underside of forewing dark brown, bronzy golden to purple shining; transverse fascia of forewing only weakly shimmering through from the upperside; inner margin indistinctly bordered, whitish golden; hindwings and fringe similar to the upperside; thorax metallic greenish-golden beneath, femora of prolegs similar on the underside; legs otherwise bronzy golden; foretibia with epiphysis; midtibia with a pair of spurs at the distal end; hindtibia inflated, slightly purple shining, with some long hair-like scales and a pair of spurs each at about 0.55 of the tibial length and at the distal end; abdomen with adpressed scales, bronzy golden shining, at the underside basally with metallic greenish-golden glance; abdomen of flattened dorso-ventrally in the distal half.

Distribution:

The species is widely distributed throughout Europe with no records only from Serbia and Montenegro, Bulgaria, Moldowa, the Tyrrhenian archipelago and Iceland (Karsholt & Nieukerken, 2010). It has been recorded also from Turkey (Koçak & Kemal 2009), but seems to be absent from Siberia (Dubatolov 2009). Kurz & Kurz (2010) report a vertical distribution from 150 - 1050 m a.s.l.

Biology:

: Salzburg, Flachgau, Eugendorf, Pebering, highway bridge, 2004.06.21 : Salzburg, Flachgau, Eugendorf, Pebering, highway bridge, 2004.06.15 the same animal the same animal
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
     
: Salzburg, Flachgau, Eugendorf, Pebering, highway bridge, 2004.06.15      
Picture from: Kurz Michael
Detailed view
     

Imagines of A. croesella have been found singly or in small groups along sunny margins of bush- and woodland, flying around alder and spruce, but also along such places in the Mediterranean macchia around Quercus ilex. They are day-active and fly in one generation per year from May to July, depending on the altitude (Kurz & Kurz 2010).

Worth knowing:

Sources:

Dubatolov, V. V. 2009. Collection of Siberian Zoological Museum: Adelidae. http://szmn.sbras.ru/Lepidop/Incurvar.htm [online 26 April 2010].
Evenhuis N. L. 1997. Litteratura taxonomica dipterorum. (1758–1930). – 2 vols. 871 pp. Leiden Backhuys.
Karsholt, O. & E. J. van Nieukerken 2010. Adelidae. In - Karsholt, O. & E. J. van Nieukerken (eds.). Lepidoptera, Moths. – Fauna Europaea version 2.2., http://www.faunaeur.org [online 23 August 2010].
Koçak, A. Ö. & M. Kemal 2009. Revised Checklist of the Lepidoptera of Turkey. Priamus, supplement 17: 1-253.
Kurz, M. A. & M. E. Kurz 2000–2010. Naturkundliches Informationssystem. – URL: http://www.nkis.info [online 23 August 2010].
Scopoli, J. A. 1763. Entomologica Carniolica exhibens Insecta Carnioliae Indigena et Distributa in Ordines, Genera, Varietates. Methodo Linnaeana. – Vindobona, 421 pp, 43 pls. [Reprinted in Graz 1972].
Zeller, P. C. 1850. Verzeichnis der von Herrn Jos. Mann beobachteten Toscanischen Microlepidoptera. – Stettiner Entomologische Zeitung 11: 59–64.

Publication data:

history:
Kurz Michael: 2003.10.05
Kurz Michael: 2005.12.17
Kurz Michael: 2010.09.24
not reviewed

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