Barbutia arasbaraniensis Mohammad-Doustaresharaf and Bagheri, 2021

Mohammad-Doustaresharaf, Mojtaba & Bagheri, Mohammad, 2021, Description of Barbutia arasbaraniensis sp. nov. (Acari: Trombidiformes: Barbutiidae) based on the deutonymph and male specimens from Iran, Persian Journal of Acarology 10 (1), pp. 9-17 : 10-15

Barbutia arasbaraniensis Mohammad-Doustaresharaf and Bagheri sp. nov.

Diagnosis

Deutonymph female: setae vi about four times length of sci (vi: sci = 4.4); setae ve longer than sce (ve: sce = 1.7) but not reaching bases of c1; setae h1 and h2 are the longest dorsal setae (90–100); aggenital setae with two pairs of seta; setae and solenidia of legs I–IV: coxae 2, 1, 1, 0; trochanters 1, 1, 1, 1; femora 3, 1, 0, 0; genua 3 + κ, 0, 0, 0; tibiae 5 + φ, 2 + φ, 1, 1; tarsi 10 + 1ω, 6 + 1ω, 5 + 1ω, 5.

Description

Deutonymph female (n = 2) ( Figs. 1–10 , 21 )

Length of body 400 (403); length of Idiosoma 337 (334); width of body 100 (105); leg I 112 (115); leg II 88 (85); leg III 75 (71); leg IV 75 (72).

Dorsum ( Fig. 1 ) – Body elongated, integument of dorsum (except anterior area of prodorsum, along sejugal furrow and in front of suranal shield with punctuation) with longitudinal striations and small spots along striae. Eyes 5 (5) diameter and postocular bodies 9 (9) diameter. All dorsal setae smooth and setiform. Setae ve longer than sce but not reaching bases of c1; seta sci 5 (5) the shortest dorsal setae and is about 1/4 of f1 20 (15). Dorsal idiosomal setae measurements: vi 22 (25), ve 60 (65), sci 5 (5), sce 35 (40), c1 20 (24), c2 25 (25), d1 15 (12), d2 16 (18), e1 15 (13), e2 27 (25), f1 20 (15), h1 100 (94), h2 92 (90). Distances between dorsal setae: vi–vi 29 (30), vi–ve 18, ve–ve 38 (38), ve–sci 8 (10), ve–sce 19 (19), sce–sce 67 (70), sci–sci 50 (50), sci–sce 14 (15), c1–c1 51 (56), c1–d1 62 (65), d1–d1 36 (43), d2–d2 82 (82), d1–d2 40 (38), d1– e1 35 (39), e1– e1 18 (20), e1– e2 43 (38), e1–f1 41 (35), f1–f1 20 (19), h1–h1 35 (28), h1–h2 10 (10). Ratio vi: sci = 4.4, ve: sce = 1.7, c1: c2 = 0.8, c1: d1: e1: f1 = 1.3:1.0:1.0:1.3, vi: vi–vi = 0.7, ve: vi–ve = 3.3, c1: c1–c1 = 0.3, c1–c1: d1–d1: e1– e1: f1–f1 = 2.8:2.0:1.0:1.1.

Venter ( Figs. 2 , 21 ) – Ventral integument and coxisternal area striated, ventral setae 1a longest (60) and 4a shortest (15), 1a close to coxae I, 3a (40) situated in front of coxae III and 4a between coxae IV; 1a: 3a: 4a = 4.0:2.6:1.0; genital and anal openings separated ( Figs. 2, 5 ); genital shields without setae; aggenital area with 2 pairs of setae, ag2 longer than other; ag1 10 (8), ag2 33 (30); pseudanal opening with 3 pairs of setae (ps1–3); ps1 = ps2 10 (9), ps3 8 (7).

Gnathosoma ( Figs. 3, 4, 6 ) – Subcapitulum ( Fig. 4 ) smooth, one pairs of subcapitular (m) and two pairs of adoral setae (or1-2). All subcapitular setae smooth and pointed. Lengths and distances of subcapitular setae m 19 (17), m–m 10. Chelicera ( Fig. 3 ) slender, fixed digit 50 (45), movable digit 12 (11), palp ( Fig. 6 ) 20 (19) long; palpfemur with 2 setae, palpgenua with one seta, palptibia with one seta, palptibial claw as long as palptarsal solenidion, missed ventral tooth and almost spine-like, palptarsus with one solenidion, 2 simple setae and 2 terminal eupathidia. All palpal setae smooth and pointed.

Legs ( Figs. 7–10 ) – Setae and solenidia of legs I–IV as follows: coxae 2, 1, 1, 0; trochanters 1, 1, 1, 1; femora 3, 1, 0, 0; genua 3 + κ, 0, 0, 0; tibiae 5 + φ, 2 + φ, 1, 1; tarsi 10 + 1ω, 6 + 1ω, 5 + 1ω, 5.

Adult male (n = 2) ( Figs. 11–20 )

Length of body (276–295); Length of idiosoma (223–237); width of body (82–91); leg I (85– 95); leg II (60–67); leg III (62–63); leg IV (62–63).

Dorsum ( Fig. 11 ) – Body and integument of dorsum same as in deutonymphs. Eyes 4 (4) diameter and postocular bodies 8 (7) diameter. All dorsal setae smooth and setiform. Setae ve longer than sce but not reaching bases of c1; sci 4 (5) the shortest dorsal setae. Dorsal idiosomal setae measurements: vi 18–20, ve 50–53, sci 5 (5), sce 35–36, c1 15–17, c2 22–25, d1 10–11, d2 17–18, e1 11 –12, e2 20 –21, f1 11–12, h1 21–22, h2 36–38. Distances between dorsal setae: vi–vi 26–29, vi–ve 16–18, ve–ve 35–40, ve–sci 9–10, ve–sce 15–18, sce–sce 50–56, sci–sci 48–51, sci–sce 10–12, c1– c1 49–51, c1–d1 45–47, d1–d1 33–37, d2–d2 76–80, d1–d2 33–35, d1– e1 34–36, e1– e1 21–24, e1– e2 29–31, e1–f1 22–25, f1–f1 21–22, h1–h1 27–29, h1–h2 4–5. Ratio vi: sci = 1.9, ve: sce = 1.4; c1: c2 = 0.6, c1: d1: e1: f1 = 1.5:1.0:1.0:1.1, vi: vi–vi = 0.7, ve: vi–ve = 3.1, c1: c1–c1 = 0.3, c1–c1: d1–d1: e1– e1: f1–f1 = 2.3:1.6:1.0:1.1.

Venter ( Fig. 12 ) – Ventral and coxisternal area integument same as in the deutonymph; ventral setae 1a longest 42–45 and 4a shortest 12–13, 1a close to coxae I, 3a 34–35 situated in front of coxae III and 4a between coxae IV; 1a: 3a: 4a = 3.5:2.8:1.0; aggenital area with 1 pair of setae ( Figs. 12, 15 ) ag1 10–12; genital setae absent; pseudanal opening with 3 pairs of setae (ps1–3); ps1 and ps2 peglike but ps3 seta like, ps1 = ps 2 2, ps3 5. Genitalia shaft-like (depicted in Fig. 15 ).

Gnathosoma ( Figs. 13, 14, 16 ) – As in the deutonymph. Lengths and distances of subcapitular setae m 17–18, m–m 9–10. Chelicera ( Fig. 13 ), fixed digit 40–42, moveable digit 9–10. Palp ( Fig. 16 ) 17–19 long.

Legs ( Figures 17–20 ) – Chaetotaxy of leg segments is similar to the deutonymph.

Adult female and other immature stages – Unknown.

Type materials

Holotype deutonymph female, one paratype deutonymph female and two adult males, from rotten woods, Abbasabad region , Arasbaran Forest , Khoda Afarin county, North East Azerbaijan province, Iran, 38° 55' 46" N, 46° 47' 88" E, 1310 m a.s.l., 3 September 2017, by Mojtaba Mohammad- Doustaresharaf.

Type deposition

The holotype deutonymph female and one paratype male are deposited in the Acarological Collection , Department of Plant Protection , Faculty of Agriculture , University of Maragheh , Maragheh, Iran ( UMI); one paratype deutonymph female, one paratype male will be deposited in the Acarological Collection, Jalal Afshar Zoological Museum, Department of Plant Protection, Faculty

of Agriculture , University of Tehran, Karaj, Iran ( JAZM). Etymology

The species is named after the region of its origin, Arasbaran Forest, Khoda Afarin County, North East Azerbaijan Province, Northwest of Iran.

Differential diagnosis

Barbutia arasbaraniensis sp. nov. is easily separated from other species of the genus Barbutia with combination of following characters: 1) with 2 pairs (vs. 3 pairs) of aggenital setae, 2) tarsus I with 1 (instead 2) solenidion, 3) femur I with 3 (vs. 4) setae, and 4) genu I with 3 + κ (vs. 5 + κ).

Figures

Figure 21. Phase-contrast micrograph of Barbutia arasbaraniensis sp. nov. (Deutonymph female) – Venter of body.

Figures 1–6. Barbutia arasbaraniensis sp. nov. (Deutonymph female) – 1. Dorsum of body; 2. Venter of body; 3. Dorsal view of chelicerae; 4. Subcapitulum; 5. Ventral view of ano-genital area; 6. Palp.

Figures 7–10. Barbutia arasbaraniensis sp. nov. (Deutonymph female) – 7. Leg I; 8. Leg II; 9. Leg III; 10. Leg IV.

Figures 11–16. Barbutia arasbaraniensis sp. nov. (Adult male) – 11. Dorsum of body; 12. Venter of body; 13. Dorsal view of chelicerae; 14. Subcapitulum; 15. Detailed view of pseudanal area; 16. Palp.

Figures 17–20. Barbutia arasbaraniensis sp. nov. (Adult male) – 17. Leg I; 18. Leg II; 19. Leg III; 20. Leg IV.