Thiallela ligeralis Walker, 1863

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 : 441-447

Thiallela ligeralis Walker, 1863

( FIGS. 1 , 3, 6¯8, 10, 14)

Myelois ligeralis Walker, 1863: 37 . TL: Sri Lanka. TD: BMNH.

Thiallela signifera Walker, 1863: 120 . TL: Borneo. TD: BMNH. As synonym of Thiallela ligeralis (Walker) by Roesler & Küppers, 1981: 72.

Luconia pallidobasella Ragonot, 1888: 7 ; Ragonot, 1893: 1. TL: Borneo. TD: BMNH. As synonym of Thiallela signifera Walker by Hampson, 1896: 106. As synonym of Thiallela ligeralis (Walker) by Roesler & Küppers, 1981: 72.

Acrobasis ligeralis: Ragonot, 1893: 95 .

Rhodophaea ligeralis: Hampson, 1896: 99 .

Thiallela ligeralis: Roesler & Küppers 1981: 72 ; Roesler, 1983: 95.

Redescription. WINGSPAN 20.5¯24.0 MM (N = 21) (FIG. 3). VeRTeX AND FRONS SILVeR-WHITe TO YeLLOWISH WHITe. ANTeNNA YeLLOWISH WHITe ALTeRNATeD WITH bROWN, MALe FLAGeLLUM SIMPLe, bASAL SeGMeNTS NOT DILATeD, WITHOUT NOTCH, WITH CILIA AbOUT SAMe LeNGTH AS DIAMeTeR OF FLAGeLLUM. LAbIAL PALPUS ReDDISH bROWN MIXeD WITH YeLLOWISH WHITe; THIRD SeGMeNT AbOUT HALF LeNGTH OF SeCOND SeGMeNT. OCCIPUT, PATAGIUM, TeGULA AND THORAX PALe WHITe TINGeD WITH GRAYISH GReeN, WITH SPARSe ReDDISH bROWN AND DARK bROWN SCALeS. FOReWING WITH bASAL MAjORITY ReGION PALe GRAYISH bROWN TO GRAYISH GReeN, WITH A FeW bLACK SCALeS NeAR bASe, DIFFUSeD LOTS OF GRAYISH WHITe SCALeS NeAR ANTeMeDIAL LINe, WITH AN ObSCURe, ARCHeD, SUbTRIANGULAR, RUSTY bROWN PATCH INWARDLY ADjACeNT TO ANTeMeDIAL LINe ; CeNTRAL ReGION YeLLOWISH bROWN TO GRAYISH GReeN NeAR ANTeMeDIAL LINe, GRAYISH WHITe SUFFUSeD WITH ReDDISH bROWN NeAR POSTMeDIAL LINe; DISTAL ReGION GRAYISH WHITe, SUFFUSeD WITH ReDDISH bROWN, bROWNISH FUSCOUS ALONG VeINS; ANTeMeDIAL LINe beYOND MIDDLe OF FOReWING, DISTINCT, ARCHeD, bLACK, INWARDLY eDGeD WITH AN INDISTINCT GRAYISH WHITe LINe; POSTMeDIAL LINe AT DISTAL 1 /6 OF FOReWING, DISTINCT, ARCUATe, SLIGHTLY CONCAVe AT M1 AND CUA2 , bLACK, eDGeD OUTWARDLY WITH AN ObSCURe WHITe LINe, AND A RUSTY bROWN SHADe ADjACeNT TO WHITe LINe FROM M1 TO DORSUM; DISCAL SPOTS FUSeD, CReSCeNT, ReDDISH bROWN; TeRMINAL LINe RUSTY bROWN; CILIA bROWN. HINDWING SeMITRANSPAReNT, PALe GRAY, FUSCOUS ALONG VeINS AND TeRMeN; CILIA LIGHT bROWN. LeGS GRAYISH WHITe MIXeD WITH RUSTY ReD, TARSUS bLACKISH bROWN AT bASe, WHITe AT eND.

Male genitalia (FIG. 10). UNCUS HOODLIKe, SLIGHTLY bROADeR THAN LONG, ROUNDeD AT APeX, SeTOSe IN DISTAL HALF ON DORSAL SURFACe. APICAL PROCeSS OF GNATHOS AbOUT 3/4 LeNGTH OF UNCUS, bROAD AT bASe, TAPeReD TO 2/3, SLeNDeR AND HOOKeD IN DISTAL 1/3. TRANSTILLA WITH TeRMINAL PART FUSeD INTO A WeLL SCLeROTIZeD SADDLe-SHAPeD PLATe, WITH A PAIR OF ROUNDeD POSTeROLATeRAL PROCeSSeS. VALVA GRADUALLY bROADeNeD TO ROUNDeD APeX; COSTA A NARROWeD bAND, eXTeNDING TO eND OF VALVA, NeARLY eqUAL WIDTH eXCePT SLIGHTLY TAPeReD DISTALLY; SACCULUS 3/5 LeNGTH OF VALVA, TRIANGULAR, bROAD AT bASe, TAPeReD TO A DISSOCIATeD, POINTeD APeX; CLASPeR NARROW, eLONGATe, SLIGHTLY SINUATe, ARISING FROM bASe OF COSTA ObLIqUe OUTWARDLY TO DISTAL 1/3 OF POSTeRIOR MARGIN, beYOND eND OF SACCULUS, WITH A TRIANGULAR FLAP AT bASe, beARING SPAReS SeTAe. JUXTA V-SHAPeD, LATeRAL LObeS WeLL DeVeLOPeD, AbOUT 3/4 LeNGTH OF APICAL PROCeSS OF GNATHOS, FINGeRLIKe, SLIGHTLY TWISTeD, SWOLLeN bASALLY, WITH A FeW SeTAe APICALLY. VINCULUM V-SHAPeD, LeNGTH SLIGHTLY SHORTeR THAN TRANSVeRSe POSTeRIOR MARGIN. AeDeAGUS CYLINDRICAL, 3/4 LeNGTH OF VALVA; WITH TWO CLUbbeD CORNUTI: ONe AbOUT HALF LeNGTH OF AeDeAGUS, ITS DISTAL PART SLIGHTLY beNT, PROTRUDeD, FORMING TWO MINUTe TINeS, ONe SLIGHTLY SHORTeR, DeNTATe ON DISTAL MARGIN. EIGHTH AbDOMINAL TeRGITe FAN-SHAPeD; eIGHTH AbDOMINAL STeRNITe TRIANGULAR, ASSOCIATeD WITH A PAIR OF CULCITA.

Female genitalia (FIG. 14). PAPILLAe ANALIS SeMIeLLIPTICAL, WITH VeSTURe OF LONG, THIN HAIRS. APOPHYSIS POSTeRIORIS SLIGHT SLeNDeR AND SHORTeR THAN ANTeRIORIS. EIGHTH AbDOMINAL SeGMeNT SHORT AND bROAD, TeRGITe V-SHAPeD CONCAVe ON POSTeRIOR MARGIN; A LIP-LIKe SCLeRITe POSTeRIOR TO eIGHTH AbDOMINAL SeGMeNT. ANTRUM WeLL DeVeLOPeD, TRAPeZOIDAL, POSTeRIOR MARGIN AbOUT 1.5 TIMeS AS WIDe AS ANTeRIOR MARGIN , WITH A PAIR OF CALAbASH-SHAPeD HeAVILY SCLeROTIZeD AReA ON LATeRAL SIDeS. DUCTUS bURSAe MeMbRANOUS, AbOUT SAMe LeNGTH AS ANTRUM, PUNCTATe ON INNeR WALL . CORPUS bURSAe MeMbRANOUS, OVATe, 1.6 TIMeS AS LONG AS WIDe , WITH A qUADRATe PLATe NeAR jUNCTION WITH DUCTUS bURSAe, AND A qUADRATe AReA DeCORATeD WITH COARSe SCObINATIONS; SIGNUM A STRONG beNDING HORN ON A bROAD bASe, SITUATeD AT AbOUT MIDDLe OF DUCTUS bURSAe, PUNCTATe AROUND. DUCTUS SeMINALIS INCePTeD POSTeRIOR MARGIN OF CORPUS bURSAe, SAMe SIDe WITH SIGNUM.

Material examined. CHINA: Hainan: 1 ♀, WUZHISHAN (18°46'N 109°31'E), 740 M, 14.IV.2009 , COLL. QING JIN & BINGbING HU (NKUM); 1 ♂, MT. DIAOLUO (18°39'N 109°54'E), LINGSHUI, 980 M, 24.IV.2014, COLL. TeNGTeNG LIU, WeI GUAN & XUeMeI HU, GeN. SLIDe NO. LHX14112 (NKUM); 1 ♂, MT. JIANFeNG (18°43'N 108°53'E), LeDONG, 1050 M, 27.IV.2014, COLL. TeNGTeNG LIU, WeI GUAN & XUeMeI HU, GeN. SLIDe NO. RYD2014211 (NKUM); 4 ♂♂, 2 ♀♀, MT. JIANFeNG, 960 M, 13-15.IV.2013, COLL. YINGDANG ReN & XIAOGUANG LIU, GeN. SLIDe NOS RYD014212M, RYD2014213f (HAASM); 4 ♂♂, 3 ♀♀, MT. DIAOLUO, 900 M, 9.IV.2013, COLL. YINGDANG ReN & XIAOGUANG LIU, GeN. SLIDe NOS RYD2014214M, RYD2014215F (HAASM). Yunnan: 1 ♀, SIMAO (22°48'N 100°58'E), 1320 M, 24.IV.1995 , COLL. GUANGYUN YAN, GeN. SLIDe NO. RYD04739 (NKUM); 1 ♀, RARe BOTANICAL GARDeN (24°00΄N 97°51΄E), RUILI, 1000 M, 06.VIII.2005, COLL. YINGDANG ReN, GeN. SLIDe NO. LHX14111 (NKUM); 2 ♂♂, TAIYANGHe (22°40'N 101°01'E), 1450 M, 18.V, 11.VI.2014, COLL. ZHeNGUO ZHANG, GeN. SLIDe NO. YLL15180 (NKUM); 1 ♂, NATIONAL FOReST PARK, TAIYANGHe, 1450 M, 6.VII.2015, COLL. KAIjIAN TeNG, GeN. SLIDe NO. YLL15179 (NKUM).

Distribution: CHINA (HAINAN, YUNNAN), ASSAM, SRI LANKA, BURMA, MALAYSIA, BORNeO, SUMATRA, NeW GUINeA, AUSTRALIA, FIjI.

Notes. Thiallela ligeralis IS ReCORDeD FOR THe FIRST TIMe FROM CHINA.

We CHeCKeD TYPeS OF ligeralis ( FIG. 6 ), signifera (FIG. 7) AND pallidobasella (FIG. 8) DePOSITeD IN BMNH UNDeR THe HeLP OF MR. DAVID Lee. DeSPITe THe SLIGHTLY DAMAGeD WING PATTeRN, We CAN STILL ReCOGNIZe THAT THeSe SPeCIMeNS RePReSeNT THe SAMe SPeCIeS, SO We AGRee WITH ROeSLeR & KüPPeRS’S VIeW (1981) THAT signifera AND pallidobasella ARe SYNONYMS OF ligeralis . THe CHINeSe SPeCIMeNS ARe DARKeR IN COLOR THAN THeSe TYPeS, AND SUFFUSeD WITH MORe GRAYISH GReeN SCALeS IN bASAL HALF, bUT THe GeNITALIA CHARACTeRS ARe IDeNTICAL WITH T. ligeralis STATeD AND DRAWN bY ROeSLeR & KüPPeRS (1981, FIGS. 55.120).

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 6¯8. Types of Thiallela ligeralis. 6, labeled Myelois ligeralis Walker, holotype, ♂; 7, labeled Thiallela signifera Walker, type, ♂; 8, labeled Luconia pallidobasella Ragonot, type, ♂ (scales = 2.0 mm).