Thiallela sulciflagella, Yang & Ren, 2018

Yang, Linlin & Ren, Yingdang, 2018, Two new species, one unrecorded species, and one newly reported male of genus Thiallela Walker, 1863 from China (Lepidoptera: Pyralidae: Phycitinae), Zootaxa 4387 (3), pp. 436-450 : 448-449

Thiallela sulciflagella sp. nov.

( FIGS. 1 , 5, 12, 16)

Diagnosis. THIS NeW SPeCIeS ReSeMbLeS TO T. epicrociella , bUT DIFFeRS FROM THe LATTeR bY THe MALe FLAGeLLUM WITH FIRST THRee SeGMeNTS SLIGHTLY DILATeD , FOURTH TO SIXTH SeGMeNTS DISTINCTLY NOTCHeD; IN THe MALe GeNITALIA, THe APICAL PROCeSS OF THe GNATHOS TAPeReD, THe TRANSTILLA WITH A PAIR OF HILLOCK-SHAPeD POSTeROLATeRAL PROCeSSeS, AND THe AeDeAGUS WITH FIVe HORN-LIKe CORNUTI DISTALLY; IN THe FeMALe GeNITALIA, THe CORPUS bURSAe WITH AN IRReGULAR SCLeROTIZeD AReA beARING DeNSe THORNS. IN T. epicrociella , THe MALe FLAGeLLUM IS DILATeD IN bASAL FIVe SeGMeNTS, NOTCHeD IN SIXTH SeGMeNT; IN THe MALe GeNITALIA, THe APICAL PROCeSS OF THe GNATHOS IS SPATULATe, THe TRANSTILLA HAS A PAIR OF TRIANGULAR POSTeROLATeRAL PROCeSSeS, AND THe AeDeAGUS WITHOUT HORN-LIKe CORNUTI; IN THe FeMALe GeNITALIA, THe ANTRUM IS THRee TIMeS AS WIDe AS LONG , AND THe CORPUS bURSAe HAS NO DeCORATION OF THORNS.

Description. WINGSPAN 17.5¯21.0 MM (N = 12) (FIG. 5). VeRTeX AND FRONS SILVeR-WHITe. ANTeNNA YeLLOWISH WHITe TINTeD WITH GOLDeN GLOSSY; SCAPe WITH LONG-NARROW SCALeS; MALe FLAGeLLUM WITH FIRST THRee SeGMeNTS SLIGHTLY DILATeD, FOURTH TO SIXTH SeGMeNTS DISTINCTLY NOTCHeD, CILIA SHORTeR THAN 1/3 LeNGTH OF DIAMeTeR OF FLAGeLLUM. LAbIAL PALPUS WITH bASAL TWO SeGMeNTS bROWNISH FUSCOUS MIXeD WITH LIGHT YeLLOW AND YeLLOWISH WHITe SCALeS, THIRD SeGMeNT AbOUT 1/3 LeNGTH OF SeCOND SeGMeNT, YeLLOWISH WHITe. OCCIPUT, PATAGIUM, TeGULA AND THORAX YeLLOWISH WHITe WITH SCATTeReD GRAYISH bLACK. FOReWING WITH bASAL MAjORITY ReGION GRAYISH YeLLOW, MOTTLeD A FeW bLACK SCALeS, TINGeD WITH GRAYISH bROWN ALONG COSTA, WITH AN INDISTINCT, ARCHeD, GRAYISH bLACK PATCH INWARDLY SUb-ADjACeNT TO ANTeMeDIAL LINe; CeNTRAL ReGION ASHY GRAY TINTeD WITH SeVeRAL GRAYISH bLACK AND RUSTY bROWN SCALeS; DISTAL ReGION ASHY GRAY; ANTeMeDIAL LINe beYOND MIDDLe OF FOReWING, SLIGHTLY ARCHeD, bLACK, eDGeD INWARDLY bY YeLLOWISH WHITe; POSTMeDIAL LINe AT DISTAL 1/6 OF FOReWING, bLACK, SLIGHTLY CONCAVe AT M1 AND CUA2, eDGeD OUTWARDLY WITH AN ObSCURe GRAYISH WHITe LINe, AND A bROWN SHADe ADjACeNT TO GRAYISH WHITe LINe; DISCAL SPOTS FUSeD, ObSCURe, GRAYISH bLACK; TeRMINAL LINe bLACK; CILIA GRAYISH bROWN. HINDWING SeMITRANSPAReNT, GRAY TINTeD WITH COPPeRY GLOSSY, FUSCOUS ALONG VeINS AND TeRMeN; CILIA LIGHT YeLLOW. LeGS YeLLOWISH WHITe MOTTLeD WITH NUMeROUS GRAYISH bLACK.

Male genitalia (FIG. 12). UNCUS HOODLIKe, LONGeR THAN bROAD, TRUNCATe AT APeX, SeTOSe IN DISTAL HALF ON DORSAL SURFACe. APICAL PROCeSS OF GNATHOS TAPeReD, SLIGHTLY SHORTeR THAN UNCUS, WITH A SMALL HOOK DISTALLY. TRANSTILLA WITH TeRMINAL PART FUSeD INTO A SCLeROTIZeD, ROUNDeD-ReCTANGULAR PLATe, WITH A PAIR OF SHORT, HILLOCK-SHAPeD POSTeROLATeRAL PROCeSSeS. VALVA SLIGHTLY bROADeNeD TO ROUNDeD APeX; COSTA A NARROWeD bAND, eXTeNDING TO eND OF VALVA, NeARLY eqUAL WIDTH eXCePT SLIGHTLY TAPeReD DISTALLY; SACCULUS AbOUT HALF LeNGTH OF VALVA, CUNIFORM, bROAD AT bASe, TAPeReD TO APeX, DISTAL 1/5 FRee; CLASPeR A NARROWeD ARM, SLIGHTLY SINUATe, ARISING FROM bASe OF COSTA ObLIqUe OUTWARDLY TO DISTAL 1/4 OF VeNTRAL MARGIN, beYOND eND OF SACCULUS, WITH A NARROWeD, TRIANGULAR FLAP AT bASe, beARING SPAReS SeTAe, WITH A SMALL SPINe DORSOAPICALLY, SLIGHTLY INFLATeD VeNTROAPICALLY. JUXTA U-SHAPeD, LATeRAL LObeS WeLL DeVeLOPeD, AS LONG AS APICAL PROCeSS OF GNATHOS, FINGeRLIKe, CURVeD OUTWARD, beARING SPARSe SeTAe. VINCULUM U-SHAPeD, MODeRATeLY LONG WITH TRANSVeRSe POSTeRIOR MARGIN. AeDeAGUS CYLINDRICAL, 3/4 LeNGTH OF VALVA; WITH AN IRReGULAR PLATe AT bASe, CORNUTI RePReSeNT bY NUMeROUS SMALL, CONICAL THORNS MeDIALLY, AND FIVe CONICAL HORN DISTALLY. EIGHTH AbDOMINAL TeRGITe SOMeWHAT ReCTANGULAR; eIGHTH AbDOMINAL STeRNITe SMALL, bOWL-SHAPeD, ASSOCIATeD WITH A PAIR OF CULCITA.

Female genitalia (FIG. 16). PAPILLAe ANALIS bROAD, SUbTRIANGULAR, ROUNDeD AT APeX, WITH VeSTURe OF THIN HAIRS . EIGHTH AbDOMINAL SeGMeNT 2.2 TIMeS AS WIDe AS LONG ; A TRIANGULAR SCLeRITe POSTeRIOR TO eIGHTH AbDOMINAL SeGMeNT. ANTRUM WeLL DeVeLOPeD, ReCTANGULAR, 1.4 TIMeS AS WIDe AS LONG, DeNSeLY PUNCTATe ANTeRIORLY. DUCTUS bURSAe VeRY SHORT, AbOUT 1/3 LeNGTH OF ANTRUM, PUNCTATe ON INNeR WALL . CORPUS bURSAe MeMbRANOUS, THRee TIMeS AS LONG AS WIDe , WITH AN IRReGULAR SCLeROTIZeD AReA beARING DeNSe CONICAL THORNS IN DIFFeReNT SIZe; SIGNUM A LARGe, STRONGLY SCLeROTIZeD, bOMMeRANG-SHAPeD HORN, SITUATeD AT AbOUT MIDDLe OF CORPUS bURSAe, OUTSIDe PROTRUDeD SeCTION HANDLe- LIKe, INSIDe PROTRUDeD SeCTION FALCIFORM. DUCTUS SeMINALIS INCePTeD POSTeRIOR 1/3 OF CORPUS bURSAe.

Type material. Holotype ♂, China: YAjIA (19°05'N 109°07'E), MT. BAWANG, HAINAN, 261 M, 22.VII.2015, COLL. QINGYUN WANG et al. ( NKUM).

Paratypes: China: Guangxi: 1 ♂, LONGRUI NATIONAL ReSeRVe (22°44'N 110°55'E), 19.III. 2011, COLL. MUCHUN Cheng, gen. slide No. RYD2014216 ( HAASM) ; 2 ♀♀, Nonggang National reserve (22°26'N 106°57'E), LONGZHOU, 20.VIII.2011, COLL. DANDAN ZHANG & JINWeI LI, GeN. SLIDe NO. RYD2014217 ( HAASM) . Hainan: 2 ♂♂, 2 ♀♀, SAMe DATA AS FOR HOLOTYPe, GeN. SLIDe NOS YLL 15194M , YLL15195F (NKUM); 2 ♂♂, HONGKAN (19°02'N 109°33'E), MT. YINGGe, 540 M, 23.VII.2015, COLL. QINGYUN WANG et al., GeN. SLIDe NO. YLL15196 (NKUM). Yunnan: 2 ♂♂, YeXIANGGU (22°10'N 100°52'E), XISHUANGbANNA, 762 M, 10.VII.2015, COLL. KAIjIAN TeNG & XIA BAI, GeN. SLIDe NO. YLL 15184 ( NKUM).

Distribution. CHINA (GUANGXI, HAINAN, YUNNAN).

Etymology. THe SPeCIFIC NAMe IS DeRIVeD FROM THe LATIN PReFIX sulc -, MeANING NOTCHeD, AND MORPHOLOGICAL TeRM flagellum, ReFeRRING TO THe MALe FLAGeLLUM WITH FOURTH TO SIXTH SeGMeNTS DISTINCTLY NOTCHeD.

Figures

FIGURE 1. Distribution of Chinese Thiallela spp. □ T.epicrociella; ■ T. hiranoi; ○ T.ligeralis; ● T. naevilla; A T. celadontis sp. nov.; ▲T. platantra; ◊ T.sulciflagella sp. nov.