Naarda secreta, 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 : 18-19

Naarda secreta sp. n.

( Figs 8 , 38 )

Holotype. m, Taiwan: Chaofeng , Hualien, 13.XII.1993, leg. Y.B. Fan; slideNo. 155TFRI (coll. TFRI) .

Taxonomy. Thesize, thedarkgroundcolour, thestrongpostmedialline andthestructureofthemalegenitaliaimplycloserelationshipwith N. atrata and N. furcatella .

Description. Wingspan 13 mm, lengthofforewing 6.5 mm. Antennaefiliform, ciliate withsetae. Twosetaeoneachsegment; longestonestwicelongerthediameterofflagellum. Ciliationdense; ciliaaslongasthediameterofflagellum. Labialpalpslong, fivetimes longerthediameterofeye; 3rdsegmentrelativelylong, itstiplight; dorsalscalesof 2nd segmentrelativelyshort, dorsaledgeconvex. Scale-hoodofvertexbroad-based, medium long, rounded. Characteristicwingpatternfeatures: costaofforewingnotconcave; shape offorewingunusuallybroad; groundcolourdarkgreywithslightbrownishshade (the specimenisworn); terminallineverystrong, blackish; transverselineshardlyvisibleexceptforthebroad, blackishpostmediallinebeingslightlysinuousandbentinwardsbelowcell; reniformstigmalightyellow, narrow, angular, withnarrowdarkedgeandsome blackishscalesatbottomsection; orbicularstigmatiny, hardlyvisible, composedbyonlya fewlightyellowscales. Colourationandpatternofhindwingsimilartothoseofforewing.

Malegenitalia ( Fig. 8 ). Uncusrelativelylong, straight, withconvexdorsaledgeand hookedtip. Tegumenaslongasvinculum. Saccusbroad-based, long, graduallytapering, itstiprounded. Juxtalarge, rhomboidal, broaderthanlong. Valvalong, mediumwide, slightlytapering; asmallcostallobepresentintheapicalquarterofvalva. Sacculusnarrow, elongate, halfaslongasvalva. Distalthirdofvalvacomposedbythestronglysclerotised fusionofcosta, harpeandcucullus; thissectionbeingtapering, veryslightlycurveddorsally, itstiprounded. Aedeaguselongate, evenlywide, slightlycurved; vesica (uneverted) withlarge, straightcornutus.

Diagnosis. Theunusuallybroadforewingofthisnewspeciesisshared by N. blepharota ( Strand, 1920) . Naardasecreta isslightlysmallerinsizethan N. blepharota , thegroundcolourisdarker, thereniformstigmaislighterand smaller, andthestreaksoftheterminallinearemuchmoreelongate. Themale genitaliashowmoreconspicuousdifferencesbetweenthesetwospecies: the ventraledgeofuncusin N. secreta isstraight, whilethatof N. blepharota ( Fig. 7 ) has an emergence, the juxta is broader, the valva has no harpe, but the costa hassmalllobe, whichisabsentin N. blepharota .

Themalegenitaliaofthisnewspeciesaresimilartothoseof N. atrata . However, thecostallobeofthevalvaof N. secreta isabsentfrom N. atrata , moreover, thevalvaislesstapering, itstiproundedinsteadofbeingpointedas in N. atrata , thesaccusisbroaderandthecornutusinthevesicaisalsobroader.

Etymology. Thespecieshasremainedlongbeenhiddenduetotheexternalsimilarity to N. blepharota . Thespecificnameisrememberingtothisfact.

Distribution. Taiwan.

Figures

Figs 7–12. Male genitalia of newly and formerly described Naarda species: 7 = N. blepharota Strand (RL10745m), 8 = N. secreta sp. n. (RL155TFRIm), 9 = N. huettleri sp. n. (TB571m), 10 = N. palawana sp. n. (RL7992m), 11 = N. glauculalis Hampson (RL7681m), 12 = N. melinau Hol- loway (RL7977m).

Figs 25–39. Adults of newly described species: 25 = N. octogesima sp. n. male, 26 = N. laoana sp. n. male, 27 = N. mirabilis sp. n. male, 28 = N. octogesima sp. n. female, 29 = N. laoana sp. n. female, 30 = N. vicina sp. n. male, 31 = N. atrata sp. n. male, 32 = N. furcatella sp. n. male, 33 = N. vicina sp. n. male (photo: ZMUC), 34 = N. atrata sp. n. female, 35 = N. furcatella sp. n. female, 36 = N. plumbea sp. n. female, 37 = N. palawana sp. n. male, 38 = N. secreta sp. n. male,