New species and records of ptyctimous mites (Acari, Oribatida) from the Philippines Author Niedbała, Wojciech Author Ermilov, Sergey G. text Zootaxa 2017 4231 1 119 128 journal article 37076 10.11646/zootaxa.4231.1.9 b7ff176e-315c-45b8-8e5f-9281c6dd5d86 1175-5326 311822 892F109E-668B-49DE-8436-9E8139350733 Mesotritia paraflagelliformis Niedbała sp. nov. ( Fig. 1 , A–E) Description. Measurements of holotype . Species of medium size. Prodorsum: length 318, width 212, height 121; setae: ss 38, in 68, le 91, ro 94, ex 20; notogaster: length 576, width 384, height 376; setae: c 1 76, h 1 and ps 1 71; length of setae h of mentum 71, h / h–h =4; genital and aggenital plates 145 × 45, anal and adanal plates 293 × 40. Integument . Colour dark brown. Surface of body punctate. Prodorsum with long lateral carinae, ventrally to it a trace of another carinae only half the size. Sensilli slightly fusiform, swollen in the middle. Rostral setae situated in the middle, slightly anteriorly of interlamellar setae. Relation of lengths: ro= > le > in > ss > ex . Notogaster with fine and short ( c 1< c 1 –d 1) setae. Setae of row c remote from anterior margin, c 1 and c 2 slightly more than setae c 3. Some striation on dorsal part of notogaster is the traces of deformation of specimen after the maceration process in lactic acid. Ventral region . Seta h of subcapitular mentum considerably (four times) longer than distance between them. Six pairs of short genital setae and two pairs of aggenital setae present, ag 1 shorter than ag 2. One pair of short anal and three pairs of adanal setae present, ad 1 four times longer than ad 2 and ad 3, distance between ad 1 and ad 2 also four times longer than distance between ad 2 and ad 3. Lyrifissures iad situated anteriorly of ad 3. Legs . Chaetome: I 1-3 -5(2)-5(1)-19(3), II 1-4 -4(1)-4(1)-13(2), III 2-3 -2(1)-2(1)- 11, IV 2-3 -2(0)-2(1)-10. Material examined. Holotype : Philippines , Luzon Island , Benguet Province , 5823— Puff Cliff , Benguet State University campus, 13.II.2010 ( R.C. Garcia ), from sample of litter from pine ( Pinus kesiya ) forest. Etymology. The prefix para is Latin meaning “near” and refers to the similarity between the new species and Mesotritia flagelliformis ( Ewing, 1909 ) . Comparison. The new species is very similar to the Holarctic species, Mesotritia flagelliformis ( Ewing, 1909 ) ( Niedbała 2000 ) , by the body dimension, shape of sensilli and arrangement of setae of ventral plates. However, it is distinguishable from the latter by the presence of a weak lower lateral carinae (versus one pair of lateral carinae in M. flagelliformis ); arrangement of prodorsal setae, rostral setae situated slightly anteriorly of interlamellar setae (versus slightly anteriorly of lamellar setae); longer notogastral setae, c 3>1/2 c 3– cp (versus c 3<1/2 c 3– cp ) or h 1>1/ 2 h 1– ps 1 (versus h 1<1/2 h 1– ps 1) and setae ad 2 and ad 3 considerably, more than 4 times, shorter than ad 1 (versus ratio ad 1: ad 2: ad 3 is approximately 2.5: 2: 1).