Adela amatella Staudinger, 1892: 392.|
Type locality: Mongolia, Kentei mts.
Type: 2 Syntypes : Mongolia, Kentei mts.; in coll. Museum für Naturkunde, Berlin.
Synonyms, misspellings, wrong determinations, etc.:|
Adela degeerella var. amurensis Alpheraky, 1897: Junior subjective synonym.
Adela kukunorensis Sauber, 1899: Junior subjective synonym.
Adela badioumbratella Sauber, 1899: Junior subjective synonym.
Adela coreana Matsumura, 1931: Junior subjective synonym.
Nemotois degeerella f. ogasawarai Matsumura, 1932: Infrasubspecific.
Taxonomic note: The syntypes of N. amatella (deposited in MNB) include two specimens of N. amatella and two specimens of N. degeerella s.l. (Kozlov 2004).
|: Finland, Nordösterbotten, Kuusamo, 2001.07.10, leg. et coll. R. Siloaho|
|Picture from: R. Siloaho (creative commons)
Description of adults: Examined: 1 , pictures of 1 , 1 . Forewing length: 11.0 mm. Head black; face smoothly scaled, bronzy golden; vestiture of hair-like scales on the head black, partly mixed yellow; eyes semiglobular, dark brown, appr. 0.4 mm in diameter (); distance of eyes (frontally) about twice the diameter of an eye; labial palpi very short, about 0.35 mm in length, bronzy golden, with distant yellow and black, hair-like scales; antennae more than 3 times the forewing length (), respectively, 1 1/4 of forewing length (); scapus strongly inflated, in flagellum proximally with backwardly directed spines, proximal third dark brown with violet tinge, distal part whitish; in , proximal 3/5 of flagellum covered densely by erect, dark brown scales with violet tinge, distal 2/5 whitish; thorax and tegulae greenish golden shining; forewings with a slightly irregular, broad fascia across the whole wing width at 2/3, the fascia consisting of three parts: central part very broad, yellow, lateral parts normally less than half the width of the center, delicately bordered black, violet with lead-like glance; basal part of the wing with similar, delicately black bordered, violet, longitudinal stripes with lead-like glance, at costa, cubitalis and analis 1, all reaching the medial fascia, although the medial and posterior ones only hardly; area between these stripes yellow, somewhat darker near medial fascia, brownish coloration sometimes also more extended, with a delicate, branching, longitudinal black line between costa and cubitalis and a similar unbranched line between cubitalis and analis 1; inner margin suffused brownish with bronzy golden glance; apical part of wing dark brown, with bronzy golden glance, violet at costa with yellow longitudinal stripes between veins, which are mostly separated by black veins, the longest reaching 1/2-4/5 of the width of the apical wing part; fringe dark brown with bronzy golden glance; hindwings with broad scales, completely covering the wing membrane, dark brownish grey with intense violet shimmer; outer margin diffuse, but delicately bronzy golden; anterior margin broad whitish, this area separated from the rest of the wing by a delicate bronzy golden line; fringe grey brown, bronzy golden shining; underside of all wings dark brown, intensively bronzy golden shining; yellow markings of upperside less intense, but distinctly developed; costal margin of hindwing light yellow in a broad stripe; legs brown with extended yellow coloration, partly golden shining; foretibia with epiphysis, midtibia with a pair of long spurs at distal end; hindtibia inflated, bright yellow, with a pair of spurs each at about 0.6 of the tibial length and at distal end, as well as with scarce, hair-like scales; abdomen dark brown, weakly golden shining.
In Europe, the species is known only from Sweden, Finland and the northern part of European Russia (Karsholt & Nieukerken, 2010). In Asia, it has been recorded from the west Siberian plain, the south Siberian mountains, from Magadan, the Amur and Primorye regions and from the Kuriles (Dubatolov 2009). Furthermore, it also occurs in Japan (anonymous 2009a), Korea (Kozlov 2004) and Mongolia (type locality), but is absent from North America (Hodges et al. 1983). In Northern Europe and in the Amur and Primorye regions of Russia, the species occurs in the lowlands. In central Asia, it also occurs in mountainous regions, but its uppermost height of occurence is unknown (Kurz & Kurz 2019).
The imagines fly in one generation per year in June and July (Kurz & Kurz 2919). About its biotope preferences, no data are available.
The species is very variable both in external characters (head colour, width of fascia, length of apical yellow stripes) and in the male genitalia (shape of valva, tegumen and base of aedeagus, see Kozlov 2004). Externally, it is very similar to Nemophora degeerella (Linné, 1758) s.l., Nemophora bellela (Walker, 1863) and Nemophora congruella Zeller, 1839, but it is distributed allopatrically from the latter species. From both other species, it is best distinguished by the narrow forewings and the medial fascia, which is located more apically in N. amatella. Furthermore, the lateral violet lead-like segments of the fascia are often only one third in width compared to the central yellow segment in N. amatella, whereas in N. degeerella and N. bellela, they are at least half as broad. N. bellela has also distinctly shorter antennae in males (only twice as long as the forewing), the fascia is constricted distinctly in the anterior half and the general colouration of the other light markings is darker brown.
anonymous 2009a. An Identification Guide of Japanese Moths compiled by Everyone. URL: http://www.jpmoth.org [online 26 April 2010].
Dubatolov, V. V. 2009. Collection of Siberian Zoological Museum: Adelidae. http://szmn.sbras.ru/Lepidop/Incurvar.htm [online 26 April 2010].
Hodges, R. W. et al. 1983. Check List of the Lepidoptera of America North of Mexico. E. W. Classey, London, UK. Updated by Jean-François Landry, Don Lafontaine and Jim Troubridge [available on http://www.lepbarcoding.org/cl_nth_am.php]
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 02 November 2010].
Kozlov, M. V. 2004. Annotated checklist of the European species of Nemophora (Adelidae). Nota Lepidopterologica 26: 115-126.
Kurz, M. A. & M. E. Kurz 20002019. Naturkundliches Informationssystem. URL: https://www.nkis.info [online 2019.12.04].
Staudinger, O. 1892. Lepidopteren des Kentei-Gebirges. Deutsche entomologische Zeitschrift Iris 5 (2): 300-393, pl. III.
Kurz Michael: 2010.11.29
Kurz Michael: 2011.02.15
Kurz Michael: 2013.01.29
Kurz Michael: 2019.12.02
Kurz Michael: 2019.12.04
Kurz Michael: 2019.12.05