Naarda laoana Tóth & Ronkay 2015, sp. n.
Creators: name: Tóth, Balázs
name: Ronkay, László
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Noctuidae
Naarda
Naarda laoana

description: Naarda laoana sp. n.
(Figs 2, 14, 26, 29)
Holotype. m, Laos: Prov. XiangKhouang, PhouSamson, 10 kmEBanPeun, 19°8.717’N, 103°46.811’E, 15.II.2012, Lao 2012PL_20, leg. L. Peregovits & A. Szappanos; slideNo. TB 555m (coll. HNHM).
Paratypes. 4 m, 1 f, dataasholotypebutslideNo. TB 554m, TB556f (coll. LP).
Taxonomy. Thisspeciesistheclosestrelativeof N. octogesima.
Description. Wingspan 22–25.5 mm, lengthofforewing 11–12.5 mm. Oneofthelargest Naarda species. Antennaefiliform, ciliate, setosewithonesetapersegment. Lengthof setae 1.5–2 timesdiameterofflagelluminmale, nearlyorjustaslongasdiameterofflagelluminfemale. Ciliaofmalesaslongasorsomewhat (ca 1.5 times) longerthandiameter offlagellum, arrangedtofourtransversearrays; ciliaoffemaleshalfaslongasdiameter offlagellum, inthreetransversearrays. Maleantennawithlongscalesformingasmall nodeonthecentralsegments. Labialpalpsrelativelyshort, theirlength 2.5 timesdiameter ofeyeinmale, 3.5 timesinfemale. Palpsbroadestatapicalpartinmale, atcentralpartin female; dorsaledgeofthelatterbeingstronglyconvex. Scale-hoodofvertexwide, itstip rounded, longinmale, shortinfemale (halfaslongasinmale). Protibiaeinmaleslightly broader, hairy. Characteristicwingpatternfeatures: forewingcostanotconcaveinmale; groundcolourochreousbrowninmale, darkchestnut- browninfemale, basalareasuffusedwithyellowishinbothsexes; subterminallinegreyishwithtwoprojectionsinwards inbothsexes, itscolourlighterinfemale, postmediallinestrictlyparallelwithsubterminal inbothsexes, angledinwardsandalmosttouchingreniformstigmainmale; medialline dark, wide, slightlysinuousinmale, straightinfemale; antemediallinepresent. Reniform stigmabig, angularandoblong, darkochreousyellow, usuallyobsolescent, lessprominent despiteitssize; withtwodarker, brown-shadeddotsinupperandlowerthirds, bottom onesometimesdarkerthantopone; orbicularstigmaquitebig, asyellowasreniform, with broad, darkoutline. Hindwinggroundcolourslightlymoregreythanthatofforewing, discalspotabsent, subterminallinemuchlighterthangroundcolour.
Malegenitalia (Fig. 2). Uncusrelativelylong, curved, withabulgeattheventraledge ofthebasalhalf, itstippointed. Scaphiumaslongasuncus, butcurvedagainstit. Tegumenlongerthanvinculum; thelatterstronglysclerotised, withslenderventralprocess. Saccusbroad-based, abruptlytapering, long, itsdistalhalfquitenarrow, itstiprounded. Baseoftranstillaverybroad. Juxtatriangularorheart- shaped (taperingventrally), with smallventro- medialnotch. Valvabroad-based, abruptlytaperingtowardssubapicalneck. Cucullusverynarrow, freeonlyattip. Sacculuswelldeveloped, distallydilated, itsdistal endtwicebroaderthanbase. Harpearelativelybroad-basedprocess, itstiprounded, its basefusedwiththeventro- lateralcornerofthesacculus. Costaheavilysclerotised, itsdorsaledgestraight, distalendbifurcate, moreorlessbird-head-like, withlong, acuteventral extension (“bill”) whichdoesnotsurpassingventraledgeofcucullus; dorsalextension rounded, tongue-shaped. Aedeagusstraight, verythick; vesicasphaericalwithtwosmall diverticula, itssurfacesmooth, nearlytwicebroaderandlongerthanaedeagus, withan extremelylarge, broadandstraight, apicallybifurcatecornutus.
Femalegenitalia (Fig. 14). Ovipositorlobesangular. Apophysesposterioresslightly (ca 1.3 times) longerthanapophysesanteriores. LobesofsternumA7 rounded. Sinusvery broad. Ductusbursaeveryshortandsurprisinglynarrow, hardlysclerotised. Corpusbursaeoval, itsanteriorquarterdenselyscobinatebyverysmallgranules. Astronglysclerotised, broad, longitudinalbandpresentfromthemouthofductusbursaetoanteriortipof corpusbursae, endinginasmallappendix.
Diagnosis. Thecomparisonofthisnewspecieswithitsclosestrelative, N. octogesima, isgivenundertheDiagnosisofthatspecies. Thebestdistinctiveexternalfeaturesof N. laoana arethelessprominentreniformstigma, the moreyellowishsuffusedbasalpartofbothwings, andthemoredistinctly markedyellowsubterminallines. Thekeyfeaturesofthemalegenitaliaare thestraightandapicallybifurcatecornutus, thelackofscobinationofvesica, thelargerandmorebird-head-likesclerotisedendofcostawithlongerand moreacuteventralextensionandthefiner, thinnervinculum. Thefemale genitaliaof N. laoana areeasilyseparablefromthoseof N. octogesima bythe shorterandthinner, membranousductusbursaewithshorteranteriorpocketlikeextension, andthelessscobinatecorpusbursae.
Themalegenitaliaof N. laoana resemblethoseof N. abnormalis buthave narrower, longeruncusandscaphium, muchlongersaccus, muchmoredevelopedcosta, muchbroaderdistalpartofsacculusandsmallerharpe. The twospeciesaremoredissimilarexternally, thenewspeciesismuchlargerin size, andthecostaofmaleisnotconcaveincontrasttothelatterspecies. The groundcolourof N. laoana islighter (inmale) ormorereddish (infemale), the reniformstigmaislargerbutlessconspicuousthanin N. abnormalis.
Etymology. Thisisthemostinterestingspeciesamongthefew Naarda taxadescribed fromLaos.
Distribution. Laos, southernpartoftheXiangkhoangPlateau.
description: Published as part of Tóth, Balázs & Ronkay, László, 2015, Revision Of The Palaearctic And Oriental Species Of The Genus Naarda (Lepidoptera: Erebidae, Hypeninae) Part 2. Description Of Ten New Species From Asia, pp. 3-23 in Acta Zoologica Academiae Scientiarum Hungaricae 61 (1) on pages 5-9, DOI: 10.17109/AZH.61.1.3.2015, http://zenodo.org/record/5734508