{{Short description|Genus and species of moth}} {{Speciesbox | image = Trisateles emortualis (14393858597).jpg | image_caption = | taxon = Trisateles emortualis | display_parents= 3 | parent_authority = Tams, 1939 | authority = (Denis & Schiffermüller, 1775) | synonyms = *''Pyralis emortualis'' <small>[Schiffermüller], 1775</small> *''Crambus emortuatus'' <small>Haworth, 1809</small> }}

'''''Trisateles''''' is a monotypic moth genus of the family Erebidae described by Tams in 1939. Its only species, '''''Trisateles emortualis''''', the '''olive crescent''', was first described by Michael Denis and Ignaz Schiffermüller in 1775. It is found in most of Europe, east to Siberia, northern Iran and China.<ref>{{cite web |last=Savela |first=Markku |date=July 5, 2019 |url=https://www.nic.funet.fi/pub/sci/bio/life/insecta/lepidoptera/ditrysia/noctuoidea/erebidae/boletobiinae/trisateles/ |title=''Trisateles'' Tams, 1939 |website=Lepidoptera and Some Other Life Forms |access-date=November 19, 2019}}</ref>

==Technical description and variation== {{Entomology glossary hatnote}} ''A. emortualis'' Schiff. (= ''olivaria'' Bkh.). Forewing pale ochreous finely dusted with brown; inner and outer lines whitish ochreous, nearly straight; a similarly coloured streak at end of cell; hindwing similar, but without inner line. In the ab. ''consonalis'' Spul. the inner line of forewing is wanting; — in ''fascialis'' Spul. the median area of forewings and basal area of hindwings are conspicuously darkened with grey scales. Larva yellowish brown; dorsal line dark brown; subdorsal lines black; the tubercles black; head small, round, reddish brown with black rim. <ref>Warren. W. in Seitz, A. Ed., 1914 ''Die Großschmetterlinge der Erde'', Verlag Alfred Kernen, Stuttgart Band 3: Abt. 1, Die Großschmetterlinge des palaearktischen Faunengebietes, Die palaearktischen eulenartigen Nachtfalter, 1914{{PD-notice}}</ref> The wingspan is 29–35&nbsp;mm.

==Biology== The moth flies from June to July depending on the location, and the species overwinters as a pupa.

The larvae feed on ''Quercus'', ''Fagus'', ''Carpinus'' and ''Rubus'' species. The larvae prefer withered and fallen leaves.

==Taxonomy== The genus has previously been classified in the subfamily Hypeninae of the family Noctuidae.<ref name="Z+2011">{{cite journal|last1=Zahiri|first1=Reza|title=Molecular phylogenetics of Erebidae (Lepidoptera, Noctuoidea)|journal=Systematic Entomology|date=2011|doi=10.1111/j.1365-3113.2011.00607.x|display-authors=etal|doi-access=free}}</ref>

==References== {{Reflist}}

==External links== {{Commons category}} *{{cite web |last=Kimber |first=Ian |url=https://ukmoths.org.uk/species/trisateles-emortualis/ |title=72.070 BF2495 Olive Crescent ''Trisateles emortualis'' ([Denis & Schiffermüller], 1775) |website=UKMoths |access-date=19 November 2019}} *[https://web.archive.org/web/20140118022350/http://www.faunaeur.org/full_results.php?id=446685 ''Fauna Europaea''] *[http://www.lepiforum.de/lepiwiki.pl?Trisateles_Emortualis ''Lepiforum e.V.'']

{{Taxonbar |from1=Q7843959 |from2=Q1310511}}

Category:Boletobiinae Category:Moths of Japan Category:Moths of Europe Category:Taxa named by Michael Denis Category:Taxa named by Ignaz Schiffermüller Category:Moths described in 1775 Category:Monotypic moth genera

{{Boletobiinae-stub}}