Proterothrix xiphiura ( Trouessart, 1885 )

Constantinescu, Ioana Cristina, Chișamera, Gabriel Bogdan & Adam, Costică, 2018, Redescription of six feather mite species of the genus Proterothrix Gaud, 1968 (Analgoidea: Proctophyllodidae: Pterodectinae) from the “ Édouard Louis Trouessart ” Collection, Zootaxa 4486 (4), pp. 451-479 : 452-453

Proterothrix xiphiura ( Trouessart, 1885)

( FIGS. 1–4 )

Pterodectes xiphiurus Trouessart 1885: 82 ; Canestrini and Kramer 1899: 127.

Proterothrix xiphiura, Park and Atyeo 1971: 69 .

Material examined. MALe LecTOTYPe (MNHN 30B13), 2 FeMALe PARALecTOTYPeS (MNHN 30B14, MNHN 30A12), FROM Psarisomus dalhousiae (JAMeSON) ( PASSeRIFORMeS : EURYLAIMIDAe ), MALAYSIA, NO OTHeR DATA. LecTOTYPe AND PARALecTOTYPeS DeSIGNATeD HeRe.

Description. MALE (LecTOTYPe) ( FIGS. 1A, B , 2A–E ). LeNGTH OF IDIOSOMA 600, WIDTH 255, LeNGTH OF HYSTeROSOMA 375. PRODORSAL SHIeLD eNTIRe, ANTeROLATeRAL eXTeNSIONS SHORT AND ROUND, LATeRAL MARGINS WITHOUT INcISIONS, POSTeRIOR MARGIN WITH SHARP-ANGULAR eXTeNSION, POSTeRIOR ANGLeS ROUND, LeNGTH 212, WIDTH 187, SURFAce WITH IRReGULAR LAcUNAe ( FIG. 1A ). ScAPULAR SeTAe se SePARATeD BY 82. ScAPULAR SHIeLDS WeLL DeVeLOPeD. HUMeRAL SHIeLDS WIDe, FUSeD VeNTRALLY WITH OUTeR ScLeROTIZeD AReAS OF ePIMeRITeS III. SeTAe cp SITUATeD VeNTRALLY ON HUMeRAL SHIeLD. SeTAe c2 FILIFORM, SITUATeD DORSALLY ON HUMeRAL SHIeLDS. SUBHUMeRAL SeTAe c3 LANceOLATe, 42 × 12. HYSTeRONOTAL SHIeLD WITH ANTeRIOR MARGIN cONcAVe, ANTeRIOR ANGLeS ROUNDeD, DISTANce FROM ANTeRIOR MARGIN TO BASeS OF SeTAe h3 375, GReATeST WIDTH IN ANTeRIOR PART 340, eNTIRe SURFAce WITH IRReGULAR LAcUNAe (WITH MARGINS NOT PeRFecTLY cIRcULAR) VARYING GReATLY IN SIZe. OPISTHOSOMAL LOBeS SHORT, WIDeR THAN LONG, POSTeRIOR MARGIN ROUGHLY ROUND. TeRMINAL cLeFT V-SHAPeD, 40 IN LeNGTH; eNTIRe NARROW MeMBRANe DeVeLOPeD BeTWeeN BASeS OF SeTAe h3 AND FORMS TRIANGULAR eXTeNSIONS ON LOBAR APIceS. SUPRANAL cONcAVITY eLONGATe, OVATe, cLeARLY OUTLINeD. SeTAe h3 SITUATeD SLIGHTLY POSTeRIOR TO SeTAe h2. SeTAe f2 SLIGHTLY POSTeRIOR TO BASeS OF SeTAe ps2. SeTAe h1 AT MIDLeVeL OF SUPRANAL cONcAVITY, DISTANT FROM LATeRAL MARGINS OF OPISTHOSOMA. SeTAe ps1 FILIFORM, 27 LONG, SITUATeD NeAR LATeRAL MARGINS OF OPISTHOSOMAL LOBeS, ANTeRIOR TO BASeS OF SeTAe h3. SeTAe c1 PReSeNT; SeTAe h3 FLATTeNeD AND LANceOLATeLY eNLARGeD IN ANTeRIOR HALF, 315 × 25; SeTAe h2 eNLARGeD IN ANTeRIOR HALF, 280 × 12; SeTAe f2 FILIFORM. DORSAL MeASUReMeNTS: c2–d2 125, d2–e2 140, e2–h3 100, d1–d2 95, e1– e2 50, h1–ps2 30, h2–h2 87, h3–h3 50, ps2–ps2 120.

EPIMeRITeS I FUSeD INTO A V, POSTeRIOR eND cONNecTeD WITH ePIMeRITeS II BY TRANSVeRSe ScLeROTIZeD BANDS, FORMING A TRIANGULAR ISLAND OF SOFT cUTIcLe. EPIMeRITeS II LONG, WITH POSTeRIOR eNDS FRee . COXAL FIeLD I cLOSeD, cOXAL FIeLD II OPeN, cOXAL FIeLDS III ALMOST cLOSeD, cOXAL FIeLDS IV WITH NARROW ScLeROTIZeD AReAS AT BASeS OF TROcHANTeRS IV. EPIMeRITeS IVA PReSeNT, WeLL DeVeLOPeD, THeIR ANTeRIOR TIPS eXceeDING LeVeL OF SeTAe 4a ( FIG. 1B ). GeNITAL ARcH 25 LONG, 52 WIDe, BASAL ScLeRITe OF GeNITAL APPARATUS ROUNDeD POSTeRIORLY; AeDeAGUS 150 LONG, eXTeNDING TO LeVeL OF SeTAe ps2. GeNITAL PAPILLAe SITUATeD ANTeRIOR TO LeVeL OF GeNITAL ARcH, LOcATeD ON SMALL PLATeS. OPISTHOVeNTRAL SHIeLDS NARROW, WITHOUT eXTeNSIONS ON INNeR MARGINS. A PAIR OF MINUTe PARAGeNITAL OVOID ScLeRITeS LOcATeD NeAR TIPS OF GeNITAL ARcH. ADANAL SHIeLDS cONSISTING OF THRee IRReGULARLY SHAPeD AND OVeRLAPPeD SHIeLDS, THAT SURROUND SeTAe ps3. ANAL SUcKeRS 27 IN DIAMeTeR, cOROLLA INDeNTeD, WITH 8 SMALL TeeTH. SeTAe ps2 SPIcULIFORM. VeNTRAL MeASUReMeNTS: 3a–4b 45, 4b–4a 70, 4a–g 87, g–ps3 35, ps3–ps3 12, ps3–h3 82.

LeGS I SLIGHTLY LONGeR THAN LeGS II, FeMORA I AND II eAcH WITH A VeNTRAL cReST ( FIG. 2A, B ). SeTA e OF TARSUS I FILIFORM. SeTAe d OF TARSI II, III MUcH SHORTeR THAN cORReSPONDING SeTAe f. TARSUS IV 62 LONG, SeTAe d, e BUTTON-LIKe, SITUATeD IN BASAL AND APIcAL PARTS OF SeGMeNT, ReSPecTIVeLY ( FIG. 2D ). LeNGTH OF SOLeNIDIA: ω 1 I 20, ω 1 II 25, φ I 125, φ II 105, φ III 37, φ IV 40.

FEMALE (RANGe FOR 2 PARALecTOTYPeS) ( FIGS. 3A, B , 4A–E ). LeNGTH OF IDIOSOMA 880–890, WIDTH 325–340, AND LeNGTH OF HYSTeROSOMA 630–640. PRODORSAL SHIeLD eNTIRe, ANTeROLATeRAL eXTeNSIONS WITH ROUNDeD TIPS, LATeRAL MARGINS WITHOUT INcISIONS, POSTeRIOR MARGIN ALMOST STRAIGHT, LeNGTH 225–256, WIDTH 260–265, SURFAce eXcePT FOR ANTeRIOR PART WITH IRReGULAR LAcUNAe ( FIG. 3A ). ScAPULAR SeTAe se SePARATeD BY 130–131. ScAPULAR SHIeLDS WeLL DeVeLOPeD. HUMeRAL SHIeLDS WIDe, FUSeD VeNTRALLY WITH OUTeR ScLeROTIZeD AReAS OF ePIMeRITeS III. SeTAe cp SITUATeD VeNTRALLY ON HUMeRAL SHIeLD. SeTAe c2 FILIFORM, SITUATeD DORSALLY ON HUMeRAL SHIeLDS. SUBHUMeRAL SeTAe c3 LANceOLATe, 45–47 × 13–14. ANTeRIOR HYSTeRONOTAL SHIeLD ROUGHLY RecTANGULAR, ANTeRIOR AND POSTeRIOR MARGINS SLIGHTLY cONcAVe, GReATeST LeNGTH 440–441, GReATeST WIDTH IN ANTeRIOR PART 245–250, SURFAce WITH DeNSeLY PAcKeD DISTRIBUTeD IRReGULAR LAcUNAe. LeNGTH OF LOBAR ReGION 180–195, WIDTH AT LeVeL OF SeTAe h2 200– 225. TeRMINAL cLeFT NARROWLY V-SHAPeD, WITH MARGINS TOUcHING IN ANTeRIOR PART, LeNGTH 45–52. SUPRANAL cONcAVITY WeLL DeVeLOPeD, TRIANGULAR. SeTAe h1 ON LOBAR SHIeLD, AT MIDLeVeL OF SUPRANAL cONcAVITY; SURFAce OF LOBAR SHIeLD WITH FeW IRReGULAR LAcUNAe. SeTAe h2 SPINDLe- SHAPeD, WITH LONG TeRMINAL FILAMeNT, 175–200 × 25–30. SeTAe ps1 cLOSeR TO INNeR MARGIN OF OPISTHOSOMAL LOBeS, SeTAe h3 42–47 LONG, ABOUT 1/2 THe LeNGTH OF TeRMINAL APPeNDAGeS. DORSAL MeASUReMeNTS: c2–d2 200–201, d2–e2 212–220, e2–h2 120–125, h2–h3 90–92, d1–d2 87–100, e1–e2 120–150, h1–h2 75–77, h2–ps1 99–100, h1–h1 95– 112, h2–h2 150–187.

EPIMeRITeS I FUSeD AS A V, WITH SHORT LATeRAL eXTeNSIONS . COXAL FIeLDS I, II WITH SMALL ScLeROTIZeD AReAS, ePIMeRITeS IVA ABSeNT ( FIG. 3B ). TRANSLOBAR APODeMeS OF OPISTHOSOMAL LOBeS PReSeNT, FUSeD TO eAcH OTHeR ANTeRIOR TO TeRMINAL cLeFT. EPIGYNUM HORSeSHOe-SHAPeD, GReATeST WIDTH 122–123. SPeRMATHecA NOT cLeARLY VISIBLe. DISTANce BeTWeeN PSeUDANAL SeTAe: ps2–ps2 45–46, ps3–ps3 50–51, ps2–ps3 50–55.

LeGS I SLIGHTLY LONGeR THAN LeGS II; FeMORA I, II eAcH WITH A WIDe VeNTRAL cReST. SeTAe d OF TARSI II–III MUcH SHORTeR THAN cORReSPONDING SeTAe f. LeNGTH OF SOLeNIDIA: ω 1 I 25–27, ω 1 II 30–37, φ I 162–175, φ II 137–138, φ III 50 – 55, φ IV 37 –38 ( FIG. 4A–D ).

Remarks. THe SPecIeS Proterothris xiphiura HAD NOT BeeN PReVIOUSLY ASSIGNeD TO A SPecIeS GROUP. We ReFeR HeReIN THIS SPecIeS TO THe wolffi SPecIeS GROUP, WHIcH IS cHARAcTeRIZeD BY HAVING, IN MALeS, THe cOXAL FIeLDS III cLOSeD OR WITH A VeRY NARROW GAP IN THe ANTeRO-MeSAL PART (NOT WIDeR THAN WIDTH OF SUBHUMeRAL SeTA c3), AND IN FeMALeS, THe TeRMINAL cLeFT NARROW, MUcH LONGeR THAN WIDe, AND USUALLY PARALLeL-SIDeD (MIRONOV et al. 2008).

Figures

FIGURE 1. Proterothrix xiphiura, male. A—dorsal view, B—ventral view.

FIGURE 2. Proterothrix xiphiura, male. A–D details of male legs, dorsal view, A—leg I, B—leg II, C—leg III, D—leg IV, E—opisthosoma of male, ventral view.

FIGURE 3. Proterothrix xiphiura, female. A—dorsal view, B—ventral view.

FIGURE 4. Proterothrix xiphiura, female. A–D details of female legs, dorsal view, A—leg I, B—leg II, C—leg III, D—leg IV.