N A T U R K U N D L I C H E S á I N F O R M A T I O N S S Y S T E M

Micropterix erctella Walsingham, 1919

(zoological nomenclature: valid name, available)

General information:

Micropteryx erctella Walsingham, 1919: 11
Type locality: Sicily, Palermo, Monte Pellegrino
Type: Lectotype : Palermo, 13.III.1918; designated by John Heath, type designation here published for the first time; in coll. BMNH

Synonyms, misspellings, wrong determinations, etc.:
Micropteryx uxoria Walsingham, 1919: 11. Type locality: Sicily, Taormina. Junior subjective synonym: syn. nov.

Lectotypes for M. erctella and M. uxoria have been designated and accordingly labelled already by John Heath more than 20 years ago, but, so far these designations have not been published. These nomenclatural acts are therefore published here for the first time. Having investigated colour slides of both lectotypes and their genitalia, we have come to the conclusion, that both taxa are conspecific. Since both taxa have been described in the same publication, we have decided to give M. erctella priority over M. uxoria, since it has page priority in that publication (principle of the first reviser, ICZN, art. 24.2).

Habit:

 
, f. uxoria: Sicilia, Mistretta, 900 m, 1952.06.11, leg. J. Klimesch, coll. Zoologische Sammlung des Bayrischen Staates, Munich , f. uxoria: Sicilia, Mistretta, 900 m, 1952.06.11, leg. J. Klimesch, coll. Zoologische Sammlung des Bayrischen Staates, Munich , f. uxoria: Sicilia, northern coast, Cefal¨, 1982.04.22, leg. Klimesch, coll. Zoologische Sammlung des Bayrischen Staates, Munich  
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: 3 [incl. colour-slides of the lectotypes of M. erctella und M. uxoria], 5 [M. uxoria]. Forewing length: 3.2 mm; 4.0 - 4.4 mm. Head black-brown; vestiture of hair-like scales on the head dirty to rusty yellow; antennae dark brown, bronzy golden shining, nearly 9/10 (), respectively, 3/5 () of forewing length; thorax bronzy to reddish golden, distally purple to purple violet, partly mixed with blueish scales; tegulae bronzy golden to purple, distally coppery to blueish; forewings slightly purple at the base of the costa, partly also along costa and outer margin; forewings otherwise bronzy to reddish golden with silvery-white, partly diffuse bordered markings: A narrow, straight to slightly inwardly bent fascia at nearly 1/4, often not reaching costa and inner margin, sometimes also interrupted in the middle; at 1/2 a narrow, slightly outwardly bent fascia across the whole wing width; an elongate spot at 3/4 from costa, inwardly oblique towards the middle of the wing; sometimes a small costal spot at 2/3; fringe light bronzy golden, at its basis partly tinged purple, whitish outwards; hindwings bronzy golden, slightly tinged purple; fringe bronzy golden, lighter outwards; legs and abdomen brown, golden shining.

Distribution:

To present knowledge, the distribution of M. erctella is confined to Sicily (Karsholt 2010, Kurz et al. 2011). The vertical distribution is documented so far from near sea-level to at least 900 m a.s.l. (Kurz & Kurz 2011).

Biology:

Klimesch has found the species an blossoms of Cistus salviifolius, partly also in competition to Micropterix sicanella Zeller, 1847. The imagines are on the wing from April till early June, depending on the altitude.

Stages in development:

The early stages are unknown.

Anatomy:

f. uxoria -genitalia, prep.-no. 946, M. Kurz: Sicilia, Mistretta, 900 m, 1952.06.11, leg. J. Klimesch, coll. Zoologische Sammlung des Bayrischen Staates, Munich -genitalia: "Ent. Ret.; TAORMINA; SICILIA; 1.V.1918", LECTOTYPE of Micropterix uxoria Walsingham, 1919, coll. Natural History Museum, London (British Museum of Natural History) , scheme of cuticle f. uxoria -genitalia, prepartion in caustic potash, prep.-no. 947, M. Kurz: Sicilia, Mistretta, 900 m, 1952.06.11, leg. J. Klimesch, coll. Zoologische Sammlung des Bayrischen Staates, Munich
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
 
f. uxoria -genitalia, perrmanent prepartion, prep.-no. 947, M. Kurz: Sicilia, Mistretta, 900 m, 1952.06.11, leg. J. Klimesch, coll. Zoologische Sammlung des Bayrischen Staates, Munich f. uxoria -genitalia, prep.-no. 522, M. Kurz: "Sicilia s. Cefal¨; 22.4.1982; J.Klimesch", coll. Zoologische Sammlung des Bayrischen Staates, Munich f. uxoria -genitalia, receptaculum seminis in higher magnification, prep.-no. 947, M. Kurz: Sicilia, Mistretta, 900 m, 1952.06.11, leg. J. Klimesch, coll. Zoologische Sammlung des Bayrischen Staates, Munich  
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
 

genitalia. Uncus moderately long; accessory clasper simple, blade-like with inflated basis; on the inner surface at the distal margin of the accessory claspers, a row of about 11 moderately long, straight to slightly bent, stout and thickened setae; proximally a second row of 5 - 6 strongly modified, very broad axe-like, as well as two longer, straight, stout and thickened setae; valves moderately long and slender, constricted medially, the spatulate distal end slightly bent upwards; valves at the inner surface postbasally with 2 - 3 thickened and several weaker setae; the distal third at the inner surface with 2 - 3 irregular rows of very short to short, stout and thickened setae.

genitalia. Tergite IX missing; sternite IX reduced, but well sclerotized, with distinct margins; papillae anales with narrow, band-like sclerotization; vestibulum big, bag-like; ductus seminalis relatively short, contorted, straight only a short distance close to the onset of the receptaculum seminis; receptaculum seminis short and slender, the proximad 2/3 slightly inflated, distinctly striated and with a small appendix proximal.

Diagnosis:

 
 
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
 

M. erctella can be distinguished from the sympatric Micropterix sicanella Zeller, 1847 most easily by the presence of a fascia at 1/4 and the missing costal spot at 2/3. Nevertheless, specimens with reduced wing markings ("typical" erctella) may be nearly indistinguishable externally from the f. obsoleta of M. sicanella and therefore require genitalia investigation. Reddish golden forms of Micropterix aruncella (Scopoli, 1763), having distinct silvery-white fasciae, are only separable with certainty by genitalia investigation too. The same is valid also for two species from the italian mainland, i.e. Micropterix italica Heath, 1981 and Micropterix renatae Kurz, Kurz & Zeller, 1997, although the latter are allopatrically distributed to present knowledge.
In the male genitalia, M. erctella is characterized by having only three postbasal, stout and thickened setae at the inner surface of the valves, whereas M. italica has 8 and M. renatae has more than 10. Furthermore, the whole apparatus is distinctly more slender in M. renatae than in the two other species.

Phylogeny: Apart from the already mentioned M. italica and M. renatae, the male genitalia of M. erctella show some resemblance to Micropterix paykullella. If these similarities show a closer relationship, however, remains uncertain due to the lack of DNA-data.

Worth knowing:

Sources:

Karsholt, O. 2010. Micropterigidae. In - Karsholt, O. & E. J. van Nieukerken (eds.). Lepidoptera, Moths. ľ Fauna Europaea version 2.2., http://www.faunaeur.org [online 18 January 2011].
Kurz, M. A. & M. E. Kurz 2000ľ2011. Naturkundliches Informationssystem. ľ URL: http://www.nkis.info [online 18 January 2011].
Walsingham, Lord 1919. New species of Aristotelia and Micropteryx. Entomologist┤s record and journal of variation 31: 10 - 12

Publication data:

history:
Kurz Michael: 2009.02.05
Kurz Michael: 2009.12.18
Kurz Michael: 2011.01.09
Kurz Michael: 2011.01.18
Kurz Michael: 2011.02.07
Kurz Michael: 2011.11.19
Kurz Michael: 2011.11.26
Kurz Michael: 2011.12.17
Kurz Michael: 2012.04.10
not reviewed

Advertisement: