Naarda atrata, Tóth & Ronkay, 2015

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, Acta Zoologica Academiae Scientiarum Hungaricae 61 (1), pp. 3-23 : 14-15

Naarda atrata sp. n.

( Figs 5 , 16 , 31, 34)

Holotype. m, Thailand: Prov. ChiangMai, 500 m, MaeSuai , CharinGardenResort, 99°35’E, 19°47’N, 2.XI.2002, leg. B. Herczig & G. Ronkay; slide No. TB 392m (coll. HNHM).

Paratypes. Thailand: 1 m, 1 f, dataasholotype, slideNoTB 666m (coll. HNHM); 1 f, Prov. ChiangMai, 450 m, MokFaGardenResort, 98°48’E, 19°06’N, 1.XI.2002. leg. B. HerczigetG. Ronkay; slideNo. TB448f (coll. HNHM) ; 1 f, Prov. ChiangMai , betweenChiang Dao and Kariang , 900 m, 99°48’E, 19°25’N, 26.X.2002, leg. B. Herczig & G. Ronkay; slide No. TB665f (coll. HNHM) .

Taxonomy. Theverydarkgroundcolourofwingsisanunusualcharacterinthegenus.

Description. Wingspan 11–13 mm, lengthofforewing 5–7 mm; oneofthesmaller speciesofthegenus. Antennaefiliform, ciliatewithsetaeinbothsexes, inmalewithdense ciliation, lengthofcilia 1.5 timesdiameterofflagellum, lengthofsetaetwicelongerthan thatofflagellum. Infemalesetaeaslongasdiameterofflagellum, ciliahalftimesaslong asdiameter, ciliationsparse. Labialpalpssimilarinbothsexes, withlengththreetimes diameterofeye, tiny 3rdsegment, relativelybroad 2ndsegmentandconvexdorsaledge ofscales. Scale-hoodofvertexnarrow-based, relativelylong, itstiprounded. Profemoraof malewide. Characteristicwingpatternfeatures: costainmalesminutelyconcave; ground colourdarkgrey; subterminallinemouse-grey, quitenarrow, stronglysinuous; postmediallineblackish, parallelwithsubterminalline, inmaleangledstronglyinwardsbelow cell; reniformstigmaochreous, elongate, oval – orflask- shaped, withpalegreylineinits axisandwithblackdotatbottomthird; orbicularstigmasmallbutclearlyvisible, ochreous withblackishedge. Hindwingdifferentlycolouredinthetwosexes: infemalepalerthan forewing, withbroadinnermostfasciaandwithoutdiscalspot; inmalegroundcolourlike forewing, discalspotpresent, hardlyvisible, areabetweendiscalspotandpostmedialline slightlypalerthangroundcolour.

Malegenitalia ( Fig. 5 ). Uncusrelativelylong, straight, itstiprounded. Scaphium shorterthanuncus, straight. Tegumenlongerthanvinculum. Saccusnarrow-based, long, itstiprounded. Juxtamushroom-shaped, nearlytwicewiderthanlong. Valvanarrowbased, edgesofbasalthirdparallel, distalpartstronglytapering; costa, cucullusandharpe fusedproducingintosclerotisedandacutelypointedstructure; costalprocessabsent. Sacculusshortandnarrow, itstiprounded, endinginthebasalhalfofvalva. Aedeagus straight, long, evenlynarrow, carinalprocessabsent; vesica (semi-everted) denselyscobinate, armedbyverylongandslender, subbasallycurvedcornutushavingsomewhatribbon-likebasalsectionandstraight, pointedspine.

Femalegenitalia ( Fig. 16 ). Ovipositorlobeswide, angular. Apophysesshort; rateof apophysesanteriores: apophysesposteriores = 2,5: 3. SternumA7 veryshort, sinusabsent. Ductusbursaerelativelylong, narrow, membraneous, withlarge, globularcolliculum closetoostium. Corpusbursaedividedintotwoparts, posteriorpartsmooth, aslongas butslightlybroaderthanductusbursae, anteriorpartlarge, oval, threetimeslongerthan posteriorpart, denselyscobinatebytinygrains.

Diagnosis. Naardaatrata isverysimilarinexternalappearanceto N. furcatella sp. n., butthelabialpalpsoftheformerspeciesareconspicuouslyshorter.

Themalegenitaliaofthisnewspeciesdifferfromthoseof N. glauculalis bytheshorteruncusandscaphium, muchlongersaccus, narrowersacculus, broaderandlessabruptlytaperingvalva, lesscurvedandthickeraedeagus andthepresenceofanarrowcornutus.

Thefemalegenitaliaof N. atrata arereminiscentof N. notata ( Hampson, 1891) ( Fig. 22 ), buttheductusbursaeisnarrowerandthecolliculumismuch shorter, butbroader.

Etymology. Thespecificnamereferstothedarkgroundcolourofwings.

Distribution. Thailand, themountainousareasofChiangMaiinthenorthwestern partofthecountry.

Figures

Figs 1–6. Male genitalia of newly described Naarda species: 1 = N. octogesima sp. n. (RL7903m), 2 = N. laoana sp. n. (TB554m), 3 = N. mirabilis sp. n. (RL7920m), 4 = N. vicina sp. n. (clasping app.: RL7988m; aedeagus: RL7989m), 5 = N. atrata sp. n. (TB392m), 6 = N. furcatella sp. n. (clasping app.: TB447m; aedeagus: TB419m).

Figs 13–18. Female genitalia of newly described species: 13 = N. octogesima sp. n. (TB399f), 14 = N. laoana sp. n. (TB556f), 15 = N. vicina sp. n. (RL8000f), 16 = N. atrata sp. n. (TB448f), 17 = N. plumbea sp. n. (RL7917f), 18 = N. furcatella sp. n. (TB422f).

Figs 19–24. Female genitalia of newly and formerly described species: 19 = N. palawana sp. n. (RL8003f), 20 = N. ineffectalis sensu Holloway (RL10784f), 21 = N. ineffectalis sensu Hol- loway (RL7689f), 22 = N. notata Hampson (RL7690f), 23 = N. bisignata Walker (OUMNH 433-1964), 24 = N. barlowi Holloway (TB437f).