Thiallela celadontis, 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 : 447-448

Thiallela celadontis sp. nov.

( FIGS. 1 , 4, 11, 15)

Diagnosis: THIS NeW SPeCIeS IS SIMILAR TO T. ligeralis SUPeRFICIALLY, bUT CAN be DISTINGUISHeD FROM THe LATTeR bY THe GeNITALIA STRUCTUReS: IN THe MALe, THe CLASPeR eXTeNDS TO NeAR eND OF SACCULUS, HAS A FINGeRLIKe FLAP AT bASe, AND THe AeDeAGUS HAS FIVe CORNUTI; IN THe FeMALe, THe ANTRUM IS ReCTANGULAR, AND THe SIGNUM IS LARGe, STRAIGHT, CLUbbeD. IN T. ligeralis , THe CLASPeR eXTeNDS beYOND eND OF SACCULUS, HAS A TRIANGULAR FLAP AT bASe, AND THe AeDeAGUS HAS TWO CORNUTI IN THe MALe GeNITALIA; THe ANTRUM IS TRAPeZOIDAL, AND THe SIGNUM IS SMALLeR AND beNT IN THe FeMALe GeNITALIA.

Description. WINGSPAN 20.0¯23.0 MM (N = 19) (FIG. 4). VeRTeX LIGHT YeLLOWISH bROWN, SCALeS YeLLOWISH WHITe- TIPPeD; FRONS YeLLOWISH WHITe. ANTeNNA YeLLOWISH WHITe ALTeRNATeD WITH bROWNISH FUSCOUS, MALe FLAGeLLUM SIMPLe, bASAL SeGMeNTS NOT DILATeD, WITHOUT NOTCH, CILIA AbOUT 2/3 LeNGTH OF DIAMeTeR OF FLAGeLLUM. LAbIAL PALPUS WITH FIRST SeGMeNT LIGHT YeLLOWISH WHITe, SeCOND SeGMeNT DARK bROWNISH FUSCOUS, YeLLOWISH WHITe AT eND, THIRD SeGMeNT AbOUT HALF LeNGTH OF SeCOND SeGMeNT, YeLLOWISH WHITe, MIXeD WITH bROWNISH FUSCOUS AT bASe. OCCIPUT, PATAGIUM, TeGULA AND THORAX GRAYISH GReeN OR GRAYISH bROWN, SCALeS GRAYISH WHITe-TIPPeD. FOReWING WITH bASAL MAjORITY ReGION GRAYISH GReeN, SCATTeReD A FeW bLACK SCALeS, WITH AN DISTINCT, LARGe, TRIANGULAR, RUSTY bROWN PATCH INWARDLY SUb- ADjACeNT TO ANTeMeDIAL LINe; CeNTRAL ReGION GRAYISH GReeN NeAR ANTeMeDIAL LINe, GRAYISH WHITe NeAR POSTMeDIAL LINe, SUFFUSeD LOTS OF RUSTY bROWN SCALeS, DIFFUSeD bLACK AROUND VeINS beLOW DISCAL SPOTS; DISTAL ReGION GRAYISH bROWN, DIFFUSeD MORe WHITe SCALeS AT APeX, bROWNISH FUSCOUS ALONG VeINS; ANTeMeDIAL LINe AT bASAL 2/5 OF FOReWING, SINUATe, bLACK, INWARDLY eDGeD WITH AN INDISTINCT GRAYISH WHITe LINe; POSTMeDIAL LINe AT DISTAL 1/5 OF FOReWING, DISTINCT, ARCUATe, SLIGHTLY CONCAVe AT M1 AND CUA2, bLACK, eDGeD OUTWARDLY WITH AN ObSCURe WHITe LINe, AND A bROWNISH FUSCOUS SHADe ADjACeNT TO WHITe LINe; DISCAL SPOTS NARROWLY FUSeD, ObSCURe, bLACK; TeRMINAL LINe bLACK; CILIA LIGHT YeLLOW. HINDWING GRAY, FUSCOUS ALONG VeINS AND MARGINS; CILIA LIGHT bROWN. FOReLeG WHITe DORSALLY, bLACK VeNTRALLY, TARSOMeReS YeLLOWISH WHITe AT eND; MID AND HIND LeGS WHITe WITH SCATTeReD bLACK SCALeS ON COXA, FeMUR AND TIbIA, TARSUS MOTTLeD WITH bLACKISH bROWN.

Male genitalia ( FIG. 11 ). UNCUS HOODLIKe, bROADeR THAN LONG, ROUNDeD AT APeX, SeTOSe IN DISTAL HALF ON DORSAL SURFACe. APICAL PROCeSS OF GNATHOS TAPeReD, WITH A SMALL HOOK DISTALLY, AbOUT 2/3 LeNGTH OF UNCUS. TRANSTILLA WITH TeRMINAL PART FUSeD INTO A SCLeROTIZeD ARCeD PLATe, WITH A PAIR OF STRONGLY SCLeROTIZeD, INWARDLY beNT, AURIFORM POSTeROLATeRAL PROCeSSeS. VALVA GRADUALLY bROADeNeD TO ROUNDeD APeX; COSTA A NARROW 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 A DISSOCIATeD, POINTeD APeX; CLASPeR A NARROWeD, ARCHeD ARM, ARISING FROM NeAR bASe OF COSTA ObLIqUe OUTWARDLY TO eND OF SACCULUS, WITH A FINGeRLIKe FLAP AT bASe, beARING SPAReS SeTAe. JUXTA U-SHAPeD, LATeRAL LObeS WeLL DeVeLOPeD, AS LONG AS APICAL PROCeSS OF GNATHOS, FINGeRLIKe, beARING A FeW SeTAe. VINCULUM U-SHAPeD, MODeRATeLY LONG WITH TRANSVeRSe POSTeRIOR MARGIN. AeDeAGUS STOUT, GRADUALLY bROADeNeD TO APeX, SLIGHTLY SHORTeR THAN VALVA; WITH ONe TAPeReD PLATe NeAR MIDDLe, FOUR SHARP, CONICAL CORNUTI NeAR APeX, AND ONe LARGe, CLUbbeD CORNUTA beARING SMALL THORNS AT APeX. EIGHTH AbDOMINAL TeRGITe FAN-SHAPeD; eIGHTH AbDOMINAL STeRNITe SMALL, TRIANGULAR, ASSOCIATeD WITH A PAIR OF CULCITA.

Female genitalia (FIG. 15). PAPILLAe ANALIS bROAD, ReCTANGULAR IN bASAL HALF, SeMICIRCULAR IN DISTAL HALF, WITH VeSTURe OF THIN HAIRS. EIGHTH AbDOMINAL SeGMeNT SHORT, 1/3 AS LONG AS WIDe; A TRIANGULAR SCLeRITe POSTeRIOR TO eIGHTH AbDOMINAL SeGMeNT. ANTRUM WeLL DeVeLOPeD, ReCTANGULAR , FOUR TIMeS AS WIDe AS LONG. DUCTUS bURSAe VeRY SHORT, AbOUT 1.2 TIMeS LeNGTH OF ANTRUM, PUNCTATe ON INNeR WALL AT jUNCTION WITH CORPUS bURSAe . CORPUS bURSAe MeMbRANOUS, OVATe, TWICe AS LONG AS WIDe, DeCORATeD WITH COARSe SCObINATIONS POSTeRIORLY TO FORM A SOMeWHAT SOLe-SHAPeD AReA ; SIGNUM A STRONG, SOMeWHAT STRAIGHT, TAPeReD, CLUbbeD HORN ON A bROAD, FORKeD bASe, SITUATeD AT AbOUT MIDDLe OF CORPUS bURSAe. DUCTUS SeMINALIS INCePTeD POSTeRIOR 1/3 OF CORPUS bURSAe, SAMe SIDe WITH SIGNUM.

Type material. Holotype ♂, China: NATIONAL FOReST PARK, TAIYANGHe (22°40'N 101°01'E), PU’eR, YUNNAN, 1450 M, 3.VII.2015 , COLL. KAIjIAN TeNG (NKUM).

Paratypes: China: Yunnan: 9 ♂♂, 1 ♀, SAMe DATA AS FOR HOLOTYPe, GeN. SLIDe NO . YLL15178M, YLL1590M, YLL 15191F ( NKUM); 5 ♂♂, SAMe PLACe AS FOR HOLOTYPe, 8.VII.2013 , COLL. LINLIN YANG, GeN. SLIDe NO. RYD2013100, RYD2014218 ( HAASM); 2 ♂♂, SAMe PLACe AS FOR HOLOTYPe, 31.III. 2014 , COLL. ZHeNGUO ZHANG, GeN. SLIDe NOS YLL15181, YLL15183 (NKUM); 1 ♂, NANKANG (24°49'N 98°47'E), BAOSHAN, 2009 M, 20.VII.2015, COLL. KAIjIAN TeNG & XIA BAI, GeN. SLIDe NO. YLL15192 (NKUM).

Distribution. CHINA (YUNNAN).

Etymology. THe SPeCIFIC NAMe IS DeRIVeD FROM THe LATIN WORD celadontis , MeANING GRAYISH GReeN, ReFeRRING TO THe FOReWING IS GRAYISH GReeN IN bASAL MAjORITY ReGION.

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.

FIGURES 11¯12. Male genitalia of Thiallela spp. 11, T. celadontis sp. nov., paratype, slide No. YLL15178; 12, T. sulciflagella sp. nov., paratype, slide No. YLL15196 (scales = 0.5 mm).