Ledermuelleriopsis aminiae, Nazari & Khanjani, 2017

Nazari, Alireza & Khanjani, Mohammad, 2017, A new species of the genus Ledermuelleriopsis (Acari: Stigmaeidae) from Markazi province, Iran, Persian Journal of Acarology 6 (3), pp. 193-201 : 194-199

Ledermuelleriopsis aminiae sp. nov. ( Figs. 1–16 )

Diagnosis (female)

Anterior and lateral of idiosoma with large pits and vacuoles, metapodosomal and opisthosomal shields separated incompletely, setae f 1 28 (27–28), humeral shields anteriorly divided; palp tibial accessory claw seta-like; coxisternal shields between coxae I–II, III–IV fused at midline and punctuated; aggenital shield and with three pairs of setae; femora I-II with 6-4 and genua I-II with 3 (1 κ) setae.

Female (n = 3) ( Figs. 1–8 ) – Idiosoma oval. Measurements in ranges (paratypes measurements follow that of holotype in parenthesis): Length of body (including gnathosoma) 406 (380–422) (excluding gnathosoma) 326 (285–330); width 247 (232–270).

Dorsum ( Figs. 1, 2 ) – Dorsal idiosoma covered with four shields (prodorsomal, metapodosomal, opisthosomal and suranal shields), anterior and lateral of idiosoma with large pits and vacuoles; prodorsal shield with four pairs of setae (vi, ve, sci and sce), a pair eyes 9 (8–10); metapodosomal and opisthosomal shields separated incompletely, metapodosomal shield with three pairs of setae (c1, d1-2), opisthosomal shield with setae e1-2 and f1 and suranal shield bears two pairs of setae (h 1, h 2). Dorsal setae clavate and spinose. Humeral shields divided anteriorly (anterior small and posterior large) ( Fig. 2 ), punctulated and bearing setae c 2 situated ventro-laterally between coxae II–III. Lengths of dorsal setae as follows: vi 23 (21–22), ve 26 (26–27), sci 20 (21–22), sce 24 (23–24), c 1 23 (21–23), c 2 40 (34–41), d 1 24 (21–23), d 2 23 (21), e 1 24 (22–24), e 2 23 (21–22), f 1 28 (27–28), h1 28 (25–27), h2 26 (27–29). Distances between dorsal setae: vi–vi 44 (44–49), ve–ve 83 (84–91), sci–sci 143 (135–149), sce–sce 195 (182–206), c 1 –c 1 78 (70–86), c 2 –c 2 196 (198–201), d 2 – d 2 199 (191–214), d 1 –d 1 76 (76–79), e 1 –e 1 61 (56–72), e 2 –e 2 156 (141–142), f 1 –f 1 82 (79–91), h 1 –h 1 39 (37–39), h 2 –h 2 87 (71–90), d 1 –d 2 70 (63–74), e 1 – e 2 54 (49–54), h 1 –h 2 25 (21–27), d 2 –e 2 72 (63– 79), c1–d1 63 (56–69), d1–e1 63 (60–72), e1–f1 49 (43–52), f1–h1 33 (24–43), vi/vi–vi 0.52 (0.44– 0.48), c1 / c1–c1 0.30 (0.27–0.30), d1 / d1–d1 0.31 (0.28–0.29), e1 / e1– e 1 0.39 (0.33–0.39), f1 / f1–f1 0.34 (0.31–0.34), h 1 / h 1 –h 1 0.72 (0.67–0.69), h 2 /h 2 –h 2 0.30 (0.32–0.38), h 1 /h 2 1.08 (0.92–0.93), c 1 –c 1: d 1 – d 1: e 1 –e 1: f 1 –f 1: 0.95 (0.88–0.94): 0.93 (0.87–0.96): 0.74 (0.71–0.79): 1.0 (1.0–1.0).

Venter ( Fig. 2 ) – Ventral cuticle transversely striated between coxae II and III. Coxisternal shields between coxae I-II, III-IV fused at midline and punctuated. Length of setae: 1a 21 (20–21), 1b 22 (23–25), 1c 18 (17–19), 2b 19 (18–19), 2c 19 (18–21), 3a 21 (20–23), 3b 18 (18–20), 3c 17 (16–19), 4a 14 (16–18), 4b 16 (14–18), 4c 16 (13–17), ag 1 14 (13–15), ag 2 15 (14–16), ag 3 16 (15– 19), ps 1 19 (21–22), ps 2 20 (17–21) and ps 3 17 (16–22). Distances: 1a–1a 28 (28–33), 3 a– 3 a 40 (41–45), 4a–4a 28 (25–32), ag 1 –ag 1 25 (17–23), ag 2 –ag 2 50 (42–55), ag 3 –ag 3 41 (37–46), ps 1 –ps 1 16 (10–22), ps 2 –ps 2 26 (19–31), ps 3 –ps 3 21 (21–33). Ratio: 1a–1a: 3a–3a: 4a–4a = 1.0 (1.03–1.12): 1.42 (1.40–1.64): 1.0 (1.0). Aggenital and anal shields punctuated, with three pairs of setae.

Gnathosoma ( Figs. 3–4 ) – Subcapitulum 69 (75–76) with two pairs of subcapitular setae, n 21 (15–17), m 20 (21–25), two pairs of adoral setae or 1 17 (15–16), or 2 18 (16–19). Chelicerae: fixed digit 87 (78–80), fixed digit almost two times longer than movable digit 41 (40–41) ( Fig. 3 ). Palp tarsus with four simple setae, one solenidion (ω 9) and two eupathidia (one simple and a tridentate); palp tibia with two setae, one well developed claw and one seta-like accessory claw; Palp genu with one dorsal seta and one ventral seta; palp femur with three setae ( Fig. 4 ).

Legs ( Figs. 5–8 ) – Lengths: leg I 184 (182–197); leg II 152 (150–160); leg III 150 (150–160), leg IV 174 (170–185); setal formulae of Leg segments (solenidia in parentheses and not included in setal counts) as follows: coxae 2-2-2-2; trochanters 1-1-2-1; femora 6-4-3-2; genua 3(+ κ)-3(+ κ)-1-1; tibiae 5 (+ φ, + φp)-5(+ φp)-5(+ φp)-5(+ φp); tarsi 13(+ ω)-9(+ ω)-7(+ ω)-7. Length of solenidia: I ω 24 (23–29), II ω 16 (14–18), III ω 4 (3–4). I φρ 16 (15–18), I φ 10 (9–11), II φρ 11 (10–13), III φρ 6 (6–9), IVφρ 7 (7–8), Iκ 5 (4–5), IIκ 4 (3–4).

Male (n = 1) ( Figs. 9–16 ) – Idiosoma oval. Length of body (including gnathosoma) 339, (excluding gnathosoma) 262; width 212.

Dorsum ( Fig. 9 ) – Dorsal idiosoma covered with four shields (prodorsomal, metapodosomal, opisthosomal and suranal shields); prodorsal shield with four pairs of setae (vi, ve, sci and sce), and a pair of eyes 12, anterior to eyes with a few vacuoles; metapodosomal and opisthosomal shields smooth and separated incompletely, metapodosomal shield with three pairs of setae (c1, d1-2), opisthosomal shield with setae e 1-2 and f 1 and suranal shield bears two pairs of setae (h 1, h 2), setae f 1 and h 2 longer than other dorsal setae. Dorsal setae serrated. Humeral shields smooth and bearing setae c 2 situated ventro-laterally. Lengths of dorsal setae: vi 18, ve 21, sci 15, sce 21, c 1 19, c 2 32, d 1 15, d 2 16, e 1 14, e 2 15, f 1 32, h 1 23, h 2 33. Distances between dorsal setae: vi–vi 32, ve – ve 61, sci–sci 103, sce–sce 153, c1–c1 59, c2–c2 194, d2–d2 153, d1–d1 53, e1–e1 61, e2–e2 99, f1–f1 63, h1–h1 33, h2– h 2 47, h 1 –h 2 9, d 1 –d 2 54, e 1 – e 2 28, d 2 – e 2 54, c 1 –d 1 49, d 1 – e 1 46, e 1 –f 1 29, f 1 –h 1 42, vi / vi–vi 0.56, c 1 / c 1 –c 1 0.32, d 1 / d 1 –d 1 0.28, e 1 / e 1 – e 1 0.23, f 1 / f 1 –f 1 0.51, h 1 / h 1 –h 1 0.70, h 2 / h 2 –h 2 0.70, h 1 / h 2. 0.69, c 1 – c 1: d 1 –d 1: e 1 –e 1: f 1 –f 1 0.94: 0.84: 0.97: 1.0.

Venter ( Figs. 10, 11 ) – Ventral cuticle with transverse striae between coxae II and III. Coxisternal shields between coxae I-II, III-IV fused at midline and smooth ( Fig. 10 ). Length of setae la 19, 1b 24, 1c 17, 2b 18, 2c 17, 3a 18, 3b 19, 3c 17, 4a 17, 4b 17, 4c 17, ag 1 18, ag 2 23, ps 1 4, ps 2 8, ps3 13. Aggenital area with two pairs of setae (ag1–2); pseudanal setae (ps1–3) set on the prominent tubercles ( Fig. 9 ). Aedeagus indicated in figure 11.

13

Gnathosoma ( Figs. 10, 12 ) – Subcapitulum (67) with two pairs of subcapitular setae, n 17, m 21, two pairs of adoral setae or1 13, or2 16. Chelicerae: fixed digit 66, almost two times longer than movable digit 35 ( Fig. 9 ). Palp five segmented, palp tarsus with four simple setae, one solenidion (ω 8) and two eupathidia (one simple and a tridentate); palp tibia with two setae, one well developed claw and one seta-like accessory claw; palp genu with one dorsal seta and one ventral seta; palp femur with three setae ( Fig. 12 ).

Legs ( Figs. 13–16 ) – Lengths: leg I 223; leg II 186; leg III 190, leg IV 222. Setal formulae of Leg segments (solenidia in parentheses and not included in setal counts) as follows: coxae 2-2-2-2; trochanters 1-1-2-1; femora 6-4-3-2; genua 3(+ κ)-3(+ κ)-1-1; tibiae 5(+ φ, + φp)-5(+ φp)-5(+ φp)- 5(+ φp); tarsi 13(+ ω1 + ω2)-9(+ ω1+ ω2)-7(+ ω1 + ω2)-7(+ ω1). Length of solenidia: I ω1 53, I ω2 25, II ω 1 40, II ω 2 15, III ω 1 40, III ω 2 4, IV ω 1 43, IV ω 2 5–7. I φρ 16, I φ 10, II φρ 11, III φρ 8, IV φρ 8, I κ 5, I κ 4.

Etymology

The new species is named in honor of Ms. Fatemeh Amini, who kindly helped senior author in field collection.

Material examined

Holotype female and two paratype females, and one paratype male were collected from soil under oak trees, Quercus brantii Lindl. (Fagaceae) , Iran: Markazi province, Karchan (49º 53′ N, 34º 8′ E, and altitude 1670 m a.s.l.), 21 May 2015 by F. Amini. All specimens are deposited in the Collection of Acarology Laboratory, University of Bu-Ali Sina , Hamadan, Iran.

Immature stages – Unknown.

Remarks

The new species Ledermuelleriospsis aminiae sp. nov. resembles L. indiscretus Dönel & Doğan, 2011 in that anterior and lateral of idiosoma with pits and vacuoles, metapodosomal and opisthosomal shield separated incompletely, femora I-II with 6-4 setae and genua I-II with 3(+ k). However it differs from the latter in: humeral shields divided anteriorly in the new species vs. undivided in L. indiscretus ; coxisternal shield punctuate in the new species instead of reticulated in L. indiscretus ; humeral shield punctated in L. aminiae instead of with pits and vacuoles in L. indiscretus and setae ve 26 (26–27), c 2 40 (34–41), h 1 28 (25–27), h 2 26 (27–29) in the new species instead of ve 13 (10–15), c 2 23 (20–27), h 1 13 (10–15), h 2 15 (10–18) in L. indiscretus .

The new species also corresponds L. bisetalis Doğan, 2004 , in having aggenital shield with three pairs of setae, metapodosomal and opisthosomal shield separated incompletely and femora I-II with 6-4 setae and genua I-II with 3(+ k). However, L. aminiae differs from the latter in anterior and lateral of idiosoma with pits and vacuoles, almost medially smooth instead of completely covered with reticulate patterns formed by collected vacuoles in L. bisetalis , dorsal setae vi -e 2 longer, vi 23 (21–22), ve 26 (26–27), sci 20 (21), sce 24 (23–24), c1 23 (21–23), c2 40 (34–41), d1 24 (21–23), d2 23 (21), e 1 24 (22–24), e 2 23 (21–22) instead of shorter, vi = ve 17, sci = sce 15, c 1 = d 1 10, c 2 17, d 2 = e 1 = e 2 13 and humeral and suranal shields with punctuation in L. aminiae in contrast reticulated pattern with vacuoles in L. bisetalis ; humeral shields divided anteriorly in the new species vs. not divided in L. bisetalis .

Also Ledermuelleriospsis aminiae sp. nov. resembles L. incisa Wood, 1967 in having incised dorsal shield. However, it differs from the latter in: metapodosomal and opisthosomal shields incorporated and with incised laterally versus completely separated L. incisa ; prodorsal shield without incisions in new species instead of with lateral incisions in L. incisa ; humeral shields divided anteriorly opposed to typical for the group L. incisa .

Figures

Figures 1–4. Ledermuelleriopsis aminiae sp. nov. (female) – 1. Dorsal view of idiosoma; 2. Ventral view of idiosoma and subcapitulum; 3.Chlicerae; 4. Palp.

Figures 5–8. Ledermuelleriopsis aminiae sp. nov. (female) – 5. Leg I; 6. Leg II; 7. Leg III; 8. Leg IV.

Figures 9–12. Ledermuelleriopsis aminiae sp. nov. (male) – 9. Dorsal view of idiosoma; 10. Ventral view of idiosoma and subcapitulum; 11.Aedaegus; 12. Palp.

Figures 13–16. Ledermuelleriopsis aminiae sp. nov. (male) –13. Leg I; 14. Leg II; 15. Leg III; 16. Leg IV.