Contribution To The Knowledge Of Ptyctimous Mites (Acari: Oribatida) From Madagascar Niedbała, W. Starý, J. Acta Zoologica Academiae Scientiarum Hungaricae 2013 2013-11-15 59 4 337 345 7W6JJ Niedbała & Starý, 2013 Niedbała & Starý 2013 [630,919,857,883] Arachnida Oribotritiidae Oribotritia Animalia Sarcoptiformes 1 338 Arthropoda species mahunkai sp. nov.  Diagnosis – Twopairsoflateralcarinaeonprodorsum, dorsallymarked strongerthanventrally. Sensillashort, dilatedmedially. Notogastralsetae short, rigid, exceptfiliformsetae c 3and p 3. Aggenitalsetae ag 1considerablyshorterthansetae ag 2. Onepairof minuteanalsetaeandthreepairsoflongeradanalsetae; distancebetween setae ad 1and ad 2islongerthanbetweensetae ad 2and ad 3; lyrifissures iadsituatedlaterallyatlevelof ad 2setae. Measurementsofholotype – Ratherlargespecies, prodorsumlength 439, width 343, height 146, sensillum 73, setae: interlamellar 94, lamellar 111, rostral 76; notogaster: length 808, width 586, height 545, setae c 183, c 1/ c 1- d 1= 0.5, h 176, p 168; genitalandaggenitalplates 207 × 116, analandadanalplates 404 × 101. Description – Colourlighttodarkbrown. Bodysurfacefinelyporose. Prodorsum (Figs 1A, B) withtwopairsoflateralcarinae, dorsallywellmarked, ventrallyweaker, shorterandconvergentinproximalpart. Sensilla (Fig. 1C) rathershort, rigid, smooth, slightlydilatedmedially; interlamellarandrostralsetaeshort, erect, rough; lamellarsetaeprocumbent, filiform; exobothridialsetaevestigial. Notogaster (Fig. 1E) withshort, rigidsetae, exceptforslightlylongerandfiliform setae c 3and p 3. Setae c 1and c 2remotefromanteriormargin, setae c 3nearthemargin. Openingofopisthosomalgland, fivelyrifissuresandtwovestigialsetaepresentandpositioned asnormalforthegenus. Ventralregion (Fig. 1D). Setae hofmentumconsiderablylongerthandistancebe- tweenthem. Genitalplateswithninepairsofsetae, setae g1–5 smalleranddistancedfrom setae g 6–9; twopairsofaggenitalsetaepresent, setae ag 1considerablyshorterthansetae ag 2. Anogenitalcleft trvratherlong. Onepairofminuteanalsetaeandthreepairsoflonger adanalsetaepresent; distancebetweensetae ad 1and ad 2longerthanbetweensetae ad 2and ad 3. Lyrifissures iadsituatedlaterallyatthelevelofsetae ad 2.  Figs 1A–F.  Oribotritiamahunkai sp. n.: A = prodorsum, dorsalview, B = prodorsum, lateral view, C = sensillum, D = rightventralside, E = opisthosoma, lateralview, F = trochanter andfemuroflegI. Legs (Fig. 1F). Chaetomeoflegs (withouttarsi): I: 1–4–5(2)–5(1), II: 1–4–4(1)–3(1), III: 3–2–3(1)–3(1), IV: 3–2–2(1)–3(1); tarsiheterotridactylous.  Materialexamined. Holotypeandeightparatypes: MAG-034, ABT/13/2011/, Mada- gascar, AmbohitantelySpeciesReserve,  20.IV.2011, GPS-coordinates 18°11’22,4”S, 47°17’38,9”E, altitude  1631 m, secondaryforest, siftedsampleofforestlitterandfernresi- dues, leg. L. S. Rahanitriniaina, andR. Raveloson, oneparatype: MAG-038, ABT/18/2011/, Madagascar, AmbohitantelySpeciesReserve, 20.IV.2011,18°11’43,1”S, 47°17’16,1”E, alti- tude  1613 m, secondaryforest, siftedsampleofforestlitter, leg. L. S. Rahanitriniaina, and R. Raveloson, sevenparatypes: MAG-031, ABT/08/2011/, Madagascar, AmbohitantelySpe- ciesReserve, 19.IV.2011,18°11’51,8”S, 47°17’03,5”E, altitude  1533m, forestedge, siftedsampleofforestlitter, leg. P. Baňař, andR. Raveloson, oneparatype: MAG-035, ABT/15/2011/, Madagascar, AmbohitantelySpeciesReserve, 20.IV.2011,18°11’31,0”S, 47°17’33,3”E, alti- tude  1630 m, secondaryforest, siftedsampleofforestlitter, leg. L.S. Rahanitriniaina, and R. Raveloson, 15 paratypes: MAG-036, ABT/16/2011/, Madagascar, AmbohitantelySpecies Reserve, 20.IV.2011,18°11’43,5”S, 47°17’23,1”E, altitude  1636 m, secondaryforest, sifted sampleofforestlitter, leg. L. S. Rahanitriniaina, andR. Raveloson, 12 paratypes: MAG- 037, ABT/17/2011/, Madagascar, AmbohitantelySpeciesReserve, 20.IV.2011,18°11’43,1”S, 47°17’19,3”E, altitude  1636 m, secondaryforest, siftedsampleofforestlitter, leg. L. S. Ra- hanitriniaina, andR. Raveloson, 10 paratypes: MAG-014, ABT/10/2011/, Madagascar, AmbohitantelySpeciesReserve, 19.IV.2011,18°11’39,2”S, 47°17’12,6”E, altitude  1674 m, sifted sampleofplantresiduesunder  Pandanussp., leg. L. S. RahanitriniainaandR. Raveloson. Holotypeand 18 paratypesaredepositedatDATE, 18 paratypesaredepositedatNHMG, and 18 paratypesatISB. Comparison – Thenewspeciesischaracterisedbythepresenceoflat- eralcarinae, whicharedorsallywellmarked, ventrallyweaker, shorter, and convergentinproximalpart; theaggenitalsetae ag 1areconsiderablyshorter thansetae ag 2andthelyrifissures iadaresituatedlaterallyatthelevelof ad 2setae. Theclosestrelated OribotritiastriataMahunka, 2009 hasgotasimilar constructionoflateralcarinae, shapeandlengthofprodorsalandnotogastral setae, presenceofonepairofanalandthreepairsofadanalsetaebutisdistinguishablebythelongitudinalstriationontheprodorsumandnotogaster, presenceofthreepairsofaggenitalsetaeandthelyrifissures iadaresituated laterallyandposteriorlyof ad 2setae. 2011-04-20 R L. S. Rahanitriniaina & Raveloson & P. Banar Madagascar 1631 -18.189554 Raveloson 1 47.286835 3 340 37 paratype