taxonID	type	description	language	source
03DF87FCFF95FFB5FE42F9799CAAE17F.taxon	description	Description (female) Length of idiosoma 242 (208 – 254), width 167 (155 – 177). Idiosomal dorsum (Figs. 1 A, 4 A, 5 A, C, E) – Idiosoma elongated oval in outline. All dorsal shields with uniform small round puncta (Figs. 5 A, C, E). Posterior parts of prodorsal shield and tergites C, D, and EF with delicate striae. Prodorsal shield and tergite C weakly concave posteriorly. Setae sc 2, c 1 and c 2 smooth and pointed, in some specimens setae c 1 weakly blunt-tipped; other dorsal setae blunt-tipped and weakly barbed. Lengths of dorsal setae: v 1 29 (28 – 32), sc 2 85 (80 – 87), c 1 13 (13 – 17), c 2 23 (21 – 23), d 14 (13 – 14), e 10 (10 – 11), f 13 (13 – 14), h 11 (10 – 12). Distances between setae: v 1 – v 1 25 (23 – 25), v 2 – v 2 35 (34 – 40), sc 2 – sc 2 36 (36 – 41), c 1 – c 1 69 (69 – 72), c 2 – c 2 104 (104 – 109), c 1 – c 2 30 (26 – 30), d – d 59 (58 – 66), e – e 75 (73 – 78), e – f 21 (19 – 22), f – f 35 (32 – 40), h – h 32 (32 – 35). Idiosomal venter (Figs. 1 B, 4 B, 5 B, D, F) – Ventral plates with very small and hardly visible puncta (Figs. 5 B, D, F). Setae ps weakly barbed, other ventral setae smooth; all ventral setae weakly blunt-tipped. Pits 1 b and 2 b small, round. Setae 1 a located well posteriad apodemes 1; setae 2 a located just posteriad middle part of apodemes 2, in one specimen left seta 2 a asymmetrically absent (Fig. 5 B). Tegula length 10 (10 – 11), maximum width 17 (17 – 19). Lengths of ventral setae: 1 a 5 (4 – 5), 2 a 5 (5 – 6), 3 a 16 (13 – 16), 3 b 8 (8), ps 16 (16 – 17). Gnathosoma (Figs. 5 B, 6) – Length of gnathosomal capsule 35 (35 – 37), width 37 (37 – 38). Dorsomedian apodeme not evident. Gnathosoma with dorsal pair of setae ch 18 (17 – 18) distinctly longer than subcapitular setae m 8 (7 – 8); both setae smooth; setae m weakly blunt-tipped, ch pointed. Dorsal face of gnathosomal capsule and ventral pigmented spots with tiny puncta. Legs (Figs. 2, 3) – Lengths of legs: I 54 (49 – 55), II 52 (51 – 54), III 52 (51 – 53), IV 46 (45 – 47). Leg I (Fig. 2 A). Solenidion ω slightly clavate, φ 1 slightly capitate; seta k 7 (6 – 7) rod-shaped. Lengths of solenidia: ω 4 (5), φ 1 3 (3 – 4). Setae (tc) and (p) of tibiotarsus smooth, blunt-tipped, eupathid-like, subequal in length; setae d, l’ of femur and l’ of genu blunt-tipped, other leg setae pointed; all leg setae smooth. Seta d of tibiotarsus distinctly longer than other leg setae. One specimen lacks both tibial solenidia φ 1 and φ 2 on both legs. Leg II (Fig. 2 B). Solenidion ω 6 (5 – 6) weakly clavate. All setae smooth; seta pl ” of tarsus spiniform and located posterolaterad solenidion ω; Setae d and l’ of femur weakly blunt-tipped, other leg setae pointed. Leg III (Fig. 3 A). All setae smooth; setae v’ of femur weakly blunt-tipped, other leg setae pointed. Leg IV (Fig. 3 B). Setae v’Ti weakly barbed, other leg setae smooth; seta tc ” pointed, other leg setae blunt-tipped; seta tc ” of tibiotarsus long, whip-like. Type material Holotype: female, slide ZISP T-Tar- 004, Chile, The Region of Magallanes, Nothofagus forest, moss on soil, 53 ° 41 ' 08.8 " S, 70 ° 58 ' 24.2 " W, 26 January 2015, coll. A. V. Tolstikov. Paratypes: 22 females, same data. Type deposition The holotype and nine paratype are deposited in the collection of the Zoological Institute of RAS, Saint Petersburg, Russia; other paratypes are deposited in the mite collection of the Museum of Zoology, University of Tyumen, Tyumen, Russia. Etymology The specific epithet of the new species refers to geographical distribution in Chile.	en	Khaustov, Alexander A., Tolstikov, Andrei V. (2025): A new genus and two new species of Tarsonemidae (Acari: Heterostigmata) from Chilean Patagonia. Persian Journal of Acarology 14: 317-334, DOI: 10.22073/pja.v14i2.86917
03DF87FCFF90FFBAFE86F84C9D48E707.taxon	type_taxon	Type species: Neosteneotarsonemus mirabilis Tseng & Lo, 1980, by original designation	en	Khaustov, Alexander A., Tolstikov, Andrei V. (2025): A new genus and two new species of Tarsonemidae (Acari: Heterostigmata) from Chilean Patagonia. Persian Journal of Acarology 14: 317-334, DOI: 10.22073/pja.v14i2.86917
03DF87FCFF9FFFBFFEAFFEB99C14E23F.taxon	description	Description (female) Length of idiosoma 303 (292 – 305), width 184 (170 – 185). Idiosomal dorsum (Figs. 7 A, 10 A, 11 A, C, E) – Idiosoma elongated in outline. All dorsal shields with uniform small round puncta (Figs. 11 A, C, E). Posterior parts of prodorsal shield and tergites C, D, and EF with delicate striae. Anterior margin of prodorsal shield straight. Stigmata and associated tracheae not evident. All dorsal setae smooth; setae v 1, sc 2, and c 2 pointed, other dorsal setae blunt-tipped; setae sc 1 setiform. Setae sc 2 situated in anterior half of prodorsal shield, slightly posteromesad sc 1 (Fig. 11 A); setae c 1 and c 2 situated on imaginary line connecting bases of setae c 2 (Fig. 10 A). Lengths of dorsal setae: v 1 20 (18 – 20), sc 1 10 (10), sc 2 70 (57 – 60), c 1 12 (11 – 12), c 2 19 (17 – 19), d 11 (8 – 11), e 7 (7), f 9 (9), h 10 (9 – 10). Distances between setae: v 1 – v 1 37 (36 – 37), v 2 – v 2 38 (35 – 40), sc 1 – sc 1 76 (74 – 76), sc 2 – sc 2 65 (65 – 70), c 1 – c 1 48 (44 – 48), c 2 – c 2 125 (115 – 125), c 1 – c 2 38 (36 – 40), d – d 81 (73 – 75), e – e 83 (83 – 84), e – f 21 (21 – 23), f – f 42 (38 – 40), h – h 38 (44 – 47). Idiosomal venter (Figs. 7 B, 10 B, 11 B, D, F) – Ventral plates with very small and hardly visible puncta (Figs. 11 B, D, F). All ventral setae smooth; setae 3 a pointed, other ventral setae blunt-tipped. Pits 1 b and 2 b small, round. Setae 1 a located on or near anterior margin of apodemes 1; setae 2 a located well posteriad middle part of apodemes 2. Apodemes 1 fused with prosternal apodeme; apodemes 2 fused with prosternal apodeme (Fig. 11 B) or in some specimens median ends diffuse near prosternal apodeme; sejugal apodeme represented by small reniform sclerites; apodemes 3 without anterior projections; apodemes 4 thin and long; poststernal apodeme strongly reduced and poorly visible (Fig. 11 D), in some specimens not visible. Tegula length 11 (10 – 11), maximum width 28 (26 – 28). Anterior margin of posterior sternal plate and posterior margins of lateral and aggenital plates with delicate striae. Lengths of ventral setae: 1 a 5 (5), 2 a 6 (6 – 7), 3 a 25 (22 – 25), 3 b 7 (7 – 8), ps 8 (7 – 8). Gnathosoma (Fig. 12) – Gnathosomal capsule trapezoidal in outline. Length of gnathosomal capsule 42 (42 – 44), width 43 (43 – 47). Dorsomedian apodeme well developed and divided posteriorly. Gnathosoma with dorsal pair of setae ch 26 (25 – 26) distinctly longer than subcapitular setae m 10 (10 – 11); both setae pointed; setae ch weakly barbed, m pointed; postpalpal setae needlelike, situated lateroventrally. Cheliceral levers well developed, nearly 2 / 3 the length of cheliceral stylets. Palpi very short, with at least one pair of setiform structures distally and three pairs of tiny projections ventrally. Pharynx poorly sclerotized, thin-walled, almost horseshoe-shaped (Fig. 12 A). A pair of very thin, long and hardly visible tracheae comes from posterodorsal part of gnathosoma into propodosoma (Fig. 12 B). Legs (Figs. 8, 9) – Lengths of legs: I 60 (58 – 61), II 53 (50 – 54), III 56 (51 – 55), IV 54 (45 – 48). Setae (u) of tarsus I and u ” of tarsi II and III not evident. Number of setae and solenidia on femur, genu, tibia, and tarsus, respectively: leg I: 4 (d, l’, l ”, v ”) - 4 (l’, l ”, v’, v ”) - 6 (2) (d, l’, l ”, v’, v ”, k, φ 1, φ 2) + 8 (l) (tc’, tc ”, p’, p ”, pl ”, s, pv’, pv ”, ω); leg II: 3 (d, l’, v ”) - 3 (l’, l ”, v’) - 4 (d, l’, v’, v ”) - 6 (l) (pl ”, tc’, tc ”, u’, pv’, pv ”, ω); leg III: 1 (v’) + 3 (l’, l ”, v’) - 4 (d, l’, v’, v ”) - 5 (tc’, tc ”, u’, pv’, pv ”); Leg IV: 1 + 1 (v’Fe, v’Ge) - 1 + 1 (v’Ti, tc ”). Leg I (Fig. 8 A). Tarsal claw small, hooked. Solenidion ω digitiform, φ 1 and φ 2 slightly capitate; seta k 5 (5) rod-shaped. Lengths of solenidia: ω 7 (7), φ 1 6 (6 – 7), φ 2 4 (4). Setae (tc) and (p) of tibiotarsus smooth, blunt-tipped, eupathid-like; tc ” situated between p’ and p ”; setae (tc) shorter than (p). Seta s of tibiotarsus truncated distally, sometimes slightly bifid (Fig. 8 A’); setae d, l’, l ” of femur, v’, v ” of genu, and pv ” of tibiotarsus blunt-tipped, other leg setae pointed; at least setae l ” of femur, v’ and v ” of genu weakly barbed, other setae smooth. Seta d of tibiotarsus distinctly longer than other leg setae. Leg II (Fig. 8 B). Solenidion ω 5 (5) digitiform. Seta u’ truncated distally (Fig. 8 b’); setae d, l’ of femur, pl ” and pv ” of tarsus spiniform; seta v’ of genu weakly blunt-tipped, other setae pointed; at least setae l ” of genu, d, l’ of tibia and tc ” of tarsus weakly barbed, other setae smooth. Empodium striated dorsally. Leg III (Fig. 9 A). Empodium and setae u’ and pv ” as on tarsus II. All setae smooth; setae v’ of femur, l’, v’ of genu, and l’ of tibia weakly blunt-tipped, other setae pointed. Leg IV (Fig. 9 B). All setae smooth; seta tc ” pointed, other leg setae blunt-tipped; seta tc ” of tibiotarsus long, whip-like. Type material Holotype: female, slide ZISP T-Tar- 005, Chile, vicinity of Punta Arenas, swamp, in Sphagnum sp., 53 ° 38 ′ 02.8 ″ S, 65 ° 31 ′ 01.6 ″ W, 18 November 2014, coll. V. A. Stolbov; paratypes: 3 females, Chile, Patagonia, Tierra del Fuego island, 54 ° 29 ′ 550 ′′ S, 068 ° 43 ′ 103 ′′ W, from Sphagnum sp. in the swamp, 3 November 2015, coll. A. A. Khaustov. Type deposition The holotype is deposited in the collection of the Zoological Institute of RAS, Saint Petersburg, Russia; other paratypes are deposited in the mite collection of the Museum of Zoology, University of Tyumen, Tyumen, Russia. Etymology The specific epithet of the new species refers to geographical distribution in Patagonia. Differential diagnosis Based on the key to species of the subgenus Neosteneotarsonemus provided by Lin & Zhang (2005), female of the new species is most similar to S. (N). ramus Lin & Zhang, 2005 in having setae c 2 longer than c 1 and setae 2 a situated well posteriad apodemes 2. The new species differs from S. (N). ramus in having setae c 1 and c 2 located on imaginary transverse line connecting bases of setae c 2 (setae c 1 located well posteriad imaginary transverse line connecting bases of setae c 2 in S. (N). ramus); apodemes 2 fused with prosternal apodeme (apodemes 2 not fused with prosternal apodeme in S. (N). ramus); setae v 1 pointed (setae v 1 blunt-tipped in S. (N). ramus); and in having four setae on femur I (three setae on femur I in S. (N). ramus). Female of the new species also similar to S. (N.) kerguelenensis (Fain, 1976) in having apodemes 2 fused with prosternal apodeme. The new species differs from S. (N.) kerguelenensis in having setae 2 a located well posteriad apodemes 2 (setae 2 a located near posterior margin of apodemes 2 in S. (N.) kerguelenensis); setae c 1 and c 2 located on imaginary transverse line connecting bases of setae c 2 (setae c 1 located well posteriad imaginary transverse line connecting bases of setae c 2 in S. (N.) kerguelenensis); and setae v 1 distinctly longer than sc 1 (setae v 1 and sc 1 subequal in length in S. (N.) kerguelenensis). Remark The genus Steneotarsonemus is recorded from Chile for the first time.	en	Khaustov, Alexander A., Tolstikov, Andrei V. (2025): A new genus and two new species of Tarsonemidae (Acari: Heterostigmata) from Chilean Patagonia. Persian Journal of Acarology 14: 317-334, DOI: 10.22073/pja.v14i2.86917
