Nenteria bastanii, Kazemi, Shahrooz & Abolghasemi, Somayeh, 2016

Kazemi, Shahrooz & Abolghasemi, Somayeh, 2016, New species and records of Uropodina mites from Iran (Acari, Mesostigmata), ZooKeys 600, pp. 25-34 : 27-30

Taxon classification Animalia Mesostigmata Nenteriidae

Nenteria bastanii sp. n. Figures 1-5, 6-10, 11-16

Diagnosis

(adult female and male). Dorsal shield with 75 pairs of short and pectinate setae, and 2-4 unpaired median setae on propodosomal region. Marginal setae short and smooth, except pectinate setae J5 and Z5. Female epigynal shield iron-shape, posteriorly reaching to mid-level of coxae IV, with an apical anterior spike, occasionally bifid at tip; shield surface smooth. Sternal setae st1-5 smooth. Female ventral region behind epigynal shield bears 22-23 pairs of setae, including Ad1-2 and st5, and with 22 pairs in male, excluding st4-5, setae mostly short and acicular, except Ad1-2, V7-8 longer and pectinate. Peritremes with a hook-like anterior extensions and without anterior projections to forward. Anterior edge of epistome bifid, without median hyaline flap. Cheliceral movable digit with a median tooth. Claws of leg I well-developed, sub-equal in size to other leg claws. Dorsal setae in femur, genu and tibia I of male mostly thicker than those in female.

Description.

Female (n = 4). Idiosoma oval-shape, brown in color, 461-494 μm long, 336-346 μm wide.

Dorsal idiosoma (Fig. 1). Dorsal shield surface ornamented with sparse sub-circular pits, more densely on opisthonotal region, median region of shield smooth. Dorsal shield setae 12-30 μm long, mostly slightly pectinate, j1 (23-24 μm) apically plumose, posterior setae slightly thicker, longer and densely pectinate, J4 longest (27-30 μm). Marginal shield narrow, bearing nine pairs of smooth and two pairs (J5, Z5) of pectinate setae, 12-16 μm long. With 20 pairs of submarginal plus one postanal seta, 18-23 μm long, situated subventrally.

Venteral idiosoma (Figs 2, 4-5, 9). Tritosternal base narrow, cylindrical, 28-31 μm long, 7-9 μm wide, with a pair of small denticles lateromedially and a pair apically; laciniae serrate, 26-31 μm long, apically trifid. Anterior margin of sternal region of holoventral shield with a median projection flanked by 1-2 small teeth; shield surface ornamented with sub-circular pits; sternal setae smooth, st1 10-11 μm long, adjacent, inserted near anterior margin of shield, st2-4 16-21 μm long, subequal. Epigynal shield iron-shape, 125-136 μm long (excluding anterior spike), 73-84 μm wide, with a relatively long anterior spike (18-20 μm), occasionally bifid at apex, shield surface smooth, posterior margin of shield truncate, ending at mid-level of coxae IV. Ventrianal region of holoventral shield with 22-23 pairs of setae, including st5, mostly smooth (12-18 μm), except pectinate para-anal setae Ad1 (24-26 μm), Ad2 (22-24 μm) and ventral setae V7 (19-22 μm), V8 (21-24 μm). Peritremes without anterior angle of 90°, poststigmatic section 22- 26 μm long. Anal opening oval-shape, 34-37 μm long, 24-28 μm wide. Surface between pedofossae III-IV with fine reticulate pattern.

Gnathosoma (Figs 6-7, 9-10). Base of epistome columnar and relatively wide, bearing some small denticulate outgrowths subapically, with a median narrow elongate projection, apically bifid (Fig. 8). Corniculi horn-like (14 μm), ventrally covered by subcapitulum; internal malae and paralaciniae smooth (Fig. 7). Hypostomal setae h1 (16-18 μm) smooth, thickened, inserted on small protuberances, h2 (11-15 μm) serrate, h3 (26-28 μm) elongate, slender, with some barbs in basal half, capitular setae h4 (14-16 μm) thickened, plumose. Deutosternal groove narrow, with few denticles behind capitular setae. Second segment of chelicera 81-83 μm long, 18-19 μm wide; fixed cheliceral digit 19-21 μm long, with a minute sub-apical denticle, and 2-3 teeth; movable digit 15-17 μm long, with a median tooth. Palp 74-80 μm long; palp chaetotaxy as " Uropoda -type" (sensu Evans, 1963): trochanter 2, femur 4, genu 5, tibia 14, tarsus 15; all setae smooth, except v1-2 in trochanter pectinate.

Legs (Figs 11-14, 16). Leg chaetotaxy " Uropoda -type" (sensu Evans, 1972). All legs with claws; leg I with a long sub-terminal seta (49-54 μm). Chitinus membrane present in coxae I, trochanter I-II, femura I-IV. Lengths of legs I-IV 242-256 μm, 185-198 μm, 192-214 μm and 245-247 μm, respectively. Lengths of femora I-IV 49-55 μm, 53-61 μm, 48-55 μm, 56-62 μm; genua I-IV 18-21 μm, 21-23 μm, 19-22 μm, 20-24 μm; tibiae I-IV 17-21 μm, 25-26 μm, 21-24 μm, 23-27 μm; tarsi I-IV 56-62 μm, 53-56 μm, 56-59 μm, 78-81 μm, respectively. Claws on tarsus I subequal to other legs claws (Fig. 16). Pretarsi I-IV 10-12 μm, 18-20 μm, 17-19 μm, 22-25 μm, respectively. Leg setae mostly narrow, needle-like and short, as figures11-14.

Male (n = 3). Idiosoma 440-464 μm long, 343-357 μm wide.

Dorsal shield. Dorsal shield characters similar to those in female. Dorsal shield setae 9-28 long, j1 22-24 μm, J4 24-28 μm long. Marginal setae 9-14 μm long; submarginal and postanal setae 17-22 μm long.

Ventral shield. Sternal setae smooth, st1 10-12 μm, st2 17-19 μm, st3 13-17 μm, st4-5 12-15 μm long. Operculum oval-shape, 38-42 μm long, 25-33 μm wide. Ven trianal region with 20 pairs of simple, smooth setae (12-15 μm), except pectinate setae Ad1-2 (22-25 μm), V7-8 (20-23 μm).

Gnathosoma. Hypostomal seta shape similar to those in female, h1 14-16 μm, h2 12-15 μm, h3 29-31 μm, h4 14 μm long. Corniculi horn- like (14 μm). Fixed and movable digit of chelicerae similar to female, fixed digit 19-20 μm long, movable digit 15-16 μm long. Palp 73 μm long.

Legs (Fig. 15). Leg chaetotaxy and chitinous membrane similar to those in female, but dorsal setae in femur I, genu I and tibia I mostly thickened in male. Lengths of legs I-IV 232-273 μm, 213-248 μm, 200-212 μm, 236-251 μm, respectively. Lengths of femora I-IV 44-51 μm, 57-61 μm, 56-60 μm,56– 62 μm; genua I-IV 19-20 μm, 20-25 μm, 21-25 μm, 23-28 μm; tibiae I-IV 18-20 μm, 20-25 μm, 21-25 μm, 24-27 μm; tarsi I-IV 55-59 μm, 52-56 μm, 55-59 μm, 82-87 μm, respectively. Pretarsus I 9-12 μm long, pretarsi II-IV 18-22 μm long. Apical long seta on tarsus I 51-56 μm long.

Material examined.

Holotype: female, southeastern Iran, Kerman Province, Kerman, Shora Park (30°29'84"N; 57°07'10"E), 1761 m a.s.l., from soil, 28 Sept 2015, coll. S. Kazemi, deposited in Acarological Collection, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman, Iran (ACISTE). Paratypes: four females and two males with same collection data, deposited in ACISTE; three females and one male, Kerman, Pardis Park (30°29'81"N; 57°07'01"E), 1760 m a.s.l., from soil, 16 Aug 2015, coll. S. Abolghasemi, deposited in ACISTE; two females and one male collected in Tehran Province, Tehran, Taleghani Park (35°45'13"N; 51°25'26"E), 1424 m a.s.l., from soil and litter, 15 Sept 2015, coll. S. Kazemi, deposited in ACISTE.

Etymology.

The species is named in honor of the famous current Iranian historian, poet, translator and writer who died in March 2014, Prof. Mohammad Bastani Parizi.

Remarks.

The new species can be easily distinguished from other described species of the genus by presence of 22-23 pairs of setae in ventral region of the holoventral shield behind the epigynal plate (including setae st5) in female and 22 pairs in male (excluding st4-5).