Proterothrix diminuta ( Trouessart, 1899 )

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 : 475-476

Proterothrix diminuta ( Trouessart, 1899)

( FIGS. 21–22 )

Pterodectes diminutus Trouessart 1899: 38 .

Pterodectes phyllurus var. diminuta, Canestrini and Kramer 1899: 126 .

Proterothrix diminuta, Park and Atyeo 1971: 38

Material examined. MALe LecTOTYPe (MNHN 43H8), 3 MALe PARALecTOTYPeS (MNHN 43H8, 39J13), FROM Manucodia ater (LeSSON) (CORVIDA: PARADISAeIDAe ), NEW GUINEA, NO OTHeR DATA; LecTOTYPe AND PARALecTOTYPeS DeSIGNATeD HeRe.

Description. MALE (LecTOTYPe, RANGe FOR 3 PARALecTOTYPeS IN PAReNTHeSIS) ( FIGS. 21A, B , 22A–E ): LeNGTH OF IDIOSOMA 348 (348–364), WIDTH 150 (152–162), LeNGTH OF HYSTeROSOMA 220 (216–228). PRODORSAL SHIeLD eNTIRe, ANTeROLATeRAL eXTeNSIONS WITH ROUNDeD TIPS, LATeRAL MARGINS WITHOUT INcISIONS, POSTeRIOR MARGIN WITH SMALL AcUTe MeDIAN eXTeNSION, LeNGTH 124 (124–132), WIDTH 120 (124–130), SURFAce WITH cIRcULAR LAcUNAe ( FIG. 21A ). ScAPULAR SeTAe se SePARATeD BY 68 (66–80). ScAPULAR SHIeLDS NARROW. 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 SHIeLD. SUBHUMeRAL SeTAe c3 LANceOLATe, 22 (22–24) × 6 (6–8). HYSTeRONOTAL SHIeLD WITH ANTeRIOR MARGIN cONcAVe, ANTeRIOR ANGLeS SHARP, DISTANce FROM ANTeRIOR MARGIN TO BASeS OF SeTAe h3 208 (216–224), GReATeST WIDTH IN ANTeRIOR PART 112 (112–120), SURFAce WITH SMALL cIRcULAR LAcUNAe. OPISTHOSOMAL LOBeS SHORT AND NARROW, ROUGHLY RecTANGULAR; LATeRAL MARGIN WITH BLUNT-ANGULAR eXTeNSION AND WIDe LATeRAL MeMBRANe STReTcHING TO BASe OF SeTA ps2; POSTeRIOR MARGIN WITH TWO TRUNcATe eXTeNSIONS AT BASeS OF SeTAe h3 AND h2 HAVING TOOTH-LIKe ANGLeS; THeSe eXTeNSIONS AND BASe OF SeTA ps2 SePRATeD BY TWO SMALL NOTcHeS. SUPRANAL cONcAVITY eLONGATe, ROUGHLY OVATe, MARGINS cLeARLY OUTLINeD. TeRMINAL cLeFT WIDe, U-SHAPeD, 26 (20–30) IN LeNGTH. SeTAe f2 ANTeRIOR TO BASeS OF SeTAe ps2. SeTAe h1 AT LeVeL OF ANTeRIOR MARGIN OF SUPRANAL cONcAVITY, DISTANT FROM LATeRAL MARGINS OF OPISTHOSOMA. SeTAe ps1 LANceOLATe WITH ROUNDeD APeX, LeNGTH 20 (18–19), SITUATeD NeAR LATeRAL MARGINS OF OPISTHOSOMAL LOBeS, ANTeRIOR TO BASeS OF SeTAe h3. SeTAe c1 PReSeNT, SeTAe f2 FILIFORM, SeTAe h3 VeRY WIDe, TRIANGULAR, WITH DeeP IDeNTATION IN POSTeRIOR MARGIN AND FeW LONGITUDINAL STRIAe, 130 (126–132) × 70 (60–61) AND h2 LIKe A HALF LANce, WITH AcUTe APeX 172 (160–184) × 20 (20–28). DORSAL MeASUReMeNTS: c2–d2 106 (106–112), d2–e2 64 (52–60), e2–h3 46 (50–62), d1–d2 28 (32–36), e1– e2 40 (40–46), h1–ps2 38 (34–40), h2–h2 76 (66–78), h3–h3 46 (44–46), ps2–ps2 100 (90–100).

EPIMeRITeS I FUSeD INTO A V, POSTeRIOR eND cONNecTeD WITH ePIMeRITeS II BY TRANSVeRSe ScLeROTIZeD BANDS. EPIMeRITeS II LONG, WITH POSTeRIOR eNDS FRee. RUDIMeNTARY ScLeRITeS REPIIA ABSeNT. EPIMeRITeS IIIA WITH STRAIGHT eXTeNSIONS DIRecTeD BAcKWARD AND BeARING BASeS OF SeTAe 4b. COXAL FIeLD I AND III cLOSeD, cOXAL FIeLD II OPeN, cOXAL FIeLDS IV WITH WIDe ScLeROTIZeD AReAS AT BASeS OF TROcHANTeRS IV. EPIMeRITeS IVA ABSeNT ( FIG. 21B ). GeNITAL ARcH 20 (22–26) LONG, 32 (26–34) WIDe, BASAL ScLeRITe OF GeNITAL APPARATUS ROUNDeD POSTeRIORLY, AeDeAGUS 82 (80–86) LONG, eXTeNDING TO LeVeL OF SeTAe ps3. GeNITAL PAPILLAe SITUATeD ANTeRIOR TO LeVeL OF GeNITAL ARcH. OPISTHOVeNTRAL SHIeLDS NOT DeVeLOPeD. SeTAe ps2 LANceOLATe, WITH AcUTe APeX 40 (36–40) IN LeNGTH. ADANAL SHIeLDS RePReSeNTeD BY A PAIR OF PLATeS WITH IRReGULAR SHAPe, SeTAe ps3 ON THeSe SHIeLDS. ANAL SUcKeRS 18 (18–22) IN DIAMeTeR, cOROLLA WITH INDeNTATIONS, WITH 21-26 TeeTH. VeNTRAL MeASUReMeNTS: 3a–4b 26 (20–26), 4b–4a 38 (34–38), 4a–g 104 (103–112), g–ps3 26 (25–30), ps3–ps3 15 (14–16), ps3–h3 48 (44–52).

LeGS I SLIGHTLY LONGeR THAN LeGS II, FeMORA I AND II eAcH WITH A VeNTRAL cReST ( FIG. 22A, B ). SeTA e OF TARSUS I FILIFORM, SeTAe cG OF GeNU I LANceOLATe. SeTAe d OF TARSI II, III MUcH SHORTeR THAN cORReSPONDING SeTAe f. TARSUS IV 34 (32–34) LONG, SeTAe d, e BUTTON-LIKe, SITUATeD IN BASAL AND APIcAL PARTS OF SeGMeNT, ReSPecTIVeLY ( FIG. 22D ). LeNGTH OF SOLeNIDIA: ω 1 I 10 (12–14), ω 1 II 11 (12–16), φ I 96 (86–96), φ II 80 (70–80), φ III 30 (30–34), φ IV 36 (35–36).

Remarks. IN THe cASe OF P. diminuta MALe, SINce THe SPecIMeN ReMOUNTeD BY PROF. WARReN T. ATYeO WAS INcOMPLeTe (LAcKING SeTAe h3, AND TARSUS OF LeG IV), A MALe FROM OTHeR SLIDe (43H8), MOUNTeD ORIGINALLY BY TROUeSSART, WAS DeSIGNATeD HeRe AS A LecTOTYPe AND USeD FOR ReDeScRIPTION. THIS SPecIeS WAS RePReSeNTeD BY A SINGLe FeMALe IN THe cOLLecTION (SLIDe 44A6), WITH FAURe MeDIUM cOMPLeTeLY cRYSTALLIZeD, THeReFORe THe ReDeScRIPTION OF THIS SPecIMeN WAS IMPOSSIBLe.

Figures

FIGURE 21. Proterothrix diminuta, male. A—dorsal view, B—ventral view.

FIGURE 22. Proterothrix diminuta, 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.