Tyrophagus hamedaniensis sp. nov. (Acari: Acaridae) from Western Iran
Author
Khanjani, Farshad Masoudian Mohammad
Author
Saboori, Alireza
. Department of Plant Protection, Faculty of Agriculture, University of Tehran, Karaj, Iran; E-mail: saboori @ ut. ac. ir
saboori@ut.ac.ir
text
Persian Journal of Acarology
2019
2019-01-15
8
1
1
9
http://zoobank.org/fd06e71d-7bb0-4731-a4ef-0730820124a1
journal article
10.22073/pja.v8i1.40690
2251-8169
4634674
FD06E71D-7BB0-4731-A4EF-0730820124A1
Tyrophagus hamedaniensis
sp. nov.
http://zoobank.org/
urn:lsid:zoobank.org:act:
9BAF81E3-8166-4E44-91BD-5DA51AC34343
Diagnosis
Prodorsal shield with un-sharp eye spots, dorsal seta
d1
considerably longer than seta
c1
,
d1
/
c1
3.0–3.50 times; tarsus I with short, stout and clavate apically solenidion ωΙ;
w
and
r
of tarsus IV setiform; spermathecal duct long 48 (45–48) and with an annulated (taenidium like) lining in distal half from base of spermathecal sac, base of spermathecal sac flat and normal 12 (
12–13 µm
) in width; Ratio:
d1
/
c1
3.0–3.50;
d1
/
d2
2.72–2.76;
d2
/
c1
1.1–127.
Description
Female (
Figs. 1
–19; n = 4) –
Idiosoma oval. Length of body including gnathosoma 618 (538– 593), excluding gnathosoma 550 (470–525); width 333 (255–290).
Dorsum (
Figs. 1–3
, 12, 14) –
Prodorsal shield punctate, with two pairs of setae (
vi
and
ve
), 83 (75–79) long, 80 (75) wide between setae
ve -ve
, almost pentagonal in shape with lateral margins slightly concave (
Figs. 3
, 12). Eye spots present (
Figs. 1, 3
, 12); Basal lobe of Grandjean's organ with one large tooth and two small teeth, 13 (12–15), 7 (6) and 3 long, respectively (
Fig. 2
). Supracoxal seta
scx
pectinated with 4–6 branches on each side and broadly expanding at the base but gradually tapers to a fine point distally (
Figs. 1, 3
, 14). All dorsal setae finely serrated. All opisthosomal setae whip-like except
c1
,
d1
and
d2
. Opisthosoma with three pairs of lyrifissures (
ia
,
im
and
ip
) and one pair of opisthosomal gland (
gla
) at level of seta
e1
; setae
c1
and
d2
are the shortest whereas setae
f2
and
h1-2
are the longest dorsal setae. Length of dorsal setae:
vi
78 (73–77),
ve
38 (38–40),
sci
155 (150–153),
sce
90 (75–85),
scx
30 (30–33),
c1
30,
c2
155 (165–168),
cp
145 (150–160),
d1
98 (90– 105),
d2
38 (33–38),
e1
255 (260–280),
e2
188 (200–214),
f2
270 (285–290),
h1
273 (288),
h2
265 (285). Distances:
vi -vi
10 (10–13),
vi -ve
35 (30–33),
ve -ve
80 (75),
sce -sce
88 (83–87),
sci -sce
25,
sci -sci
38 (30–33),
sce -ve
60 (60–80),
c1-c1
113 (90),
c1-c2
58 (49–55),
c2-c2
225 (190–200),
c2-cp
38 (35–38),
cp -cp
300 (245–265),
c1-d1
75 (63–65),
d1-d1
45 (35–40),
d1-d2
115 (90–100),
d2-d2
238 (190–210),
d2-gla
68 (55–65),
gla -gla
263 (220–245),
gla -e1
78 (58–68),
e1-e1
125 (95–113),
e1-e2
125 (100–113),
e2-e2
263 (205–260),
f2-f2
188 (165–200),
e1-h1
147 (125–135),
h1-h1
78 (68–75),
h1-h2
38 (33–35),
h2-h2
60 (63–68). Ratio:
d1
/
c1
3.37 (3.0–3.50),
d1
/
d2
2.58 (2.72–2.76),
d2
/
c1
1.27 (1.1–1.27).
Gnathosoma (
Figs. 4–5
) –
Punctate; palpi two-segmented, palp tarsus with a simple seta (
pt
) and one solenidion (ω) 13 and 6 (6–7) long, respectively; palp tibia with two simple setae [
d
25 (25– 27) and
l
20 (17) long]; infracapitulum with one simple seta (
m
) 28 (30–33) long, rutellum distinct and developed (
Fig. 5
); chelicerae 78 (75) long, cheliceral seta
cha
spine-like 5 (6) long, movable and fixed digits with 4–5 teeth (
Fig. 4
). Palp coxa with one
elcp
setae 10 (12–13) (Fig. 16). Distance:
m - m
23 (25).
Figures 1-7.
Tyrophagus hamedaniensis
sp. nov.
(female) – 1. Dorsal view of idiosoma; 2. Grandjean's organ; 3. Prodorsal shield; 4. Chelicera; 5. Gnathosoma; 6. Ventral view of idiosoma; 7. Anal region.
Figures 8-11.
Tyrophagus hamedaniensis
sp. nov.
(female) – 8. Leg I; 9. Leg II; 10. Leg III; 11. Leg IV.
Venter (
Figs. 6–7
, 13, 15–14) –
Coxal plates I well developed and divided with apodemes anteriorly on each side with four nodules, coxal plates I extending postero-medially beyond apex of prosternal apodeme forming two lobes (
Figs. 6
, 13, 15); coxal plates II broadly triangular and developed beyond apex of well-developed apodeme; between coxae II and III is a pair of thin sclerotized sejugal apodemes, 60 long; coxal plates III-IV each with apodemes (
Fig. 6
); genital region (posterior to sejugal apodemes to coxae IV) with two pairs of genital papillae 17 (18) long and 13 wide, a pair of setae (
g
) and genital folds (
Fig. 6
). Anal region with three pairs of adanal setae (
ad1- 3
) and three pairs of pseudoanal setae (
ps1-3
), seta
ps1
the longest anal setae (
Fig. 6
); a pair of lyrifissures (
ih)
between the base of setae
ad2
and
ps2
. Copulatory opening 6 (5–6) in diameter, spermathecal duct narrowing gradually from copulatory, spermathecal duct 48 (45–48) long, the thin part of the duct 18 (17–19) in length and
1 in
width, the thick part of duct 2 (2–2.5) in width, the distal half part of spermathecal duct from base of spermathecal sac with an annulated (taenidium like) lining, 10 (8–10) in length, base of spermathecal sac flat 12 (12–13) in width, sclerites of oviducts Y shape and 8 (8–9) in apart (
Fig. 7
, 16); Length of ventral setae:
1a
28 (30–35),
c3
30 (30–33),
3a
15 (17–20),
3b
45 (43–45),
4a
65 (55–60),
g
15 (15–18),
ad3
13 (12–13),
ad2
18 (16),
ad1
13 (13–14),
ps3
15,
ps2
110 (95–100),
ps1
170 (175),
h3
195 (175–205).
Figures 12-19.
Tyrophagus hamedaniensis
sp. nov.
(female) – 12. Prodorsal shield; 13. Ventral view of propodosoma region; 14. Supracoxal seta
scx
; 15. Coxal plates and apodemes I; 16. Spermatheca; 17. Solenidion ωΙ on tarsus I; 18. Solenidion ω on tarsus II; 19. Seta
r
on tarsus IV.
Legs (
Figs. 8–11
, 17–19) –
Setal formulae of leg segments I-IV as follows (solenidia and special setae in parentheses): coxae 1-0-2-1; trochanters 1-1-1-0; femora 1-1-0-1, genua 2(2σ)-2(1σ)-1(1σ)- 0; tibiae 2(1φ)-2(1φ)-1(1φ)-1(1φ); tarsi 13(3ω,18)-12(1ω)-10-10. Leg I-II with solenidion cylindrical and apex obviously widened (ωΙand ω, respectively) (
Figs. 8–9
, 17–18). Measurements of leg segments and setae as follows:
Leg I:
Tr 38 (33–38),
pR
33 (25–30), Fe 43 (43–50),
vF
48 (38–45), Ge 30 (33–35),
cG
28 (28–30),
mG
43 (37–42), 01 45 (37–43), 02 25 (20–25), Ti 25 (25–27),
gT
25,
hT
30 (25–30), ϕ110 (110–113), Ta (L.) 53 (50–53), Ta (W.) 20 (20–23), ωΙ 17 (18), ω²8, ω325 (25–30), 84,
aa
20 (18),
ba
24 (18–20),
wa
43 (33–38),
ra
25 (23–25),
la
23 (20–23),
d
30 (35),
e
8,
f
18,
p
4 (4–5),
q
4 (4–5),
s
8,
u
5,
v
5, empodium 17 (13–15), claw 15 (13–14);
Leg II:
Tr 38 (30– 33),
pR
27 (25–33), Fe 45 (43–50),
vF
55 (43–50), Ge 33 (33–35),
cG
28,
mG
38, 018 (18–23), Ti 25 (28),
gT
25,
hT
33 (30–33), ϕ110 (100–115), Ta (L) 48 (50), Ta (W) 18 (18–20), ω20,
ba
15 (15– 18),
wa
39 (35–38),
ra
29 (28–33),
la
20 (18),
d
30 (28–33),
e
7 (8),
f
13 (15),
p
5,
q
5,
s
6 (6–7),
u
7 (6),
v
7 (6), empodium 13 (13–15), claw 13;
Leg III:
Tr 30 (38),
sR
33 (33–38), Fe 35 (33–38), Ge 25 (30),
nG
38 (43–45), 0 20 (18), Ti 25,
kT
38 (38–43), ϕ115 (120–125), Ta (L) 55 (60), Ta (W) 13 (15),
w
30 (27–33),
r
25 (22–25),
d
28 (25–28),
e
7 (8),
f
18 (15–19),
p
4,
q
4,
s
6 (5–7),
u
5 (6),
v
5 (6), empodium 15 (13–15), claw 13 (10–13);
Leg IV:
Tr 38 (40), Fe 40 (42–45),
wF
38 (40–43), Ge 33 (38), Ti 30 (35),
kT
35 (35–38), ϕ110 (100–120), Ta (L) 55 (63–68), Ta (W) 15 (13–15),
w
35 (28–35),
r
20 (18–20),
d
28 (25),
e
8 (7–8),
f
18 (16–18),
p
4 (4–5),
q
4 (4–5),
s
7 (6–7),
u
5,
v
5, empodium 13 (12–13), claw 13 (12–13), Ge and Ti IV with minute preapical process (
Fig. 11
), setae
w
and
r
of tarsus IV setiform (Fig. 18).
Remarks
The new species is similar to
T
.
putrescentiae
(
Schrank, 1781
)
(re-described from
New Zealand
by
Fan and Zhang, 2007
) in having dorsal seta
d1
considerably longer than seta
c1
, 2.1–3.5 times, prodorsal shield with eye spots, tarsus I with short, stout and clavate apically solenidion ωΙ, setae
w
and
r
of tarsus IV setifom but it differs in: 1. Ratio setae
d1
/
c1
3.0-3.5 vs. 2.1-2.8; 2. Coxal plate II broad and convex and well developed beyond apex of apodeme in the former but normal and sinuous shaped and not extending beyond apex of apodeme in the latter; 3. Spermathecal duct without neck at its distal half in Iranian species opposed to present in
New Zealand
specimens; 4. Dorsal setae of new species are shorter than other species:
vi
73–78,
ve
38–40,
sci
150–155,
sce
75–90,
c1
30,
c2
155–168,
e1
255–280,
e2
188–214,
f2
270–290,
h1
273–288,
h2
265–285,
h3
175–205 vs.
vi
98–117,
ve
60–62,
sci
185–210,
sce
116–137,
c1
50–51,
c2
247–261,
e1
319–333,
e2
276–286,
f2
337–391,
h1
384–392,
h2
370–373,
h3
314–319.
The individuals of
T
.
hamedaniensis
sp. nov.
are closely similar to
T. womersleyi
Fan and Zhang, 2007
(from
New Zealand
) in having dorsal setae
c1
and
d2
short and subequal in length, prodorsal shield with eye spots; tarsus I with short, stout and clavate apically solenidion ωΙ, base of spermathecal sac flat but it differs in: 1. The setae
f2
and
h1-2
is the longest dorsal setae in Iranian species vs. seta
h
2
in Australian species; 2. The distal half of spermathecal duct without neck in Iranian species but it present in Australian species; 3. The distal half part of the spermathecal duct from the base of the spermathecal sac with an annulated (taenidium like) lining in the first species whereas smooth in the second species; 4. Ratio pseudoanal setae:
ps1
/
ps2
: 1.5–1.8 vs. 2.7 and
ps2
/
ps3
6.3–7.3 vs. 5; 5. Ratio adanal setae
ad2/ad1
1.14–1.38 vs. 0.83; 6. Tarsus II with short, stout and clavate apically solenidion ω, 20 long vs. stout, almost cylindrical, 16 long; 7. Seta
r
of tarsus IV setiform in the former opposed to spiniform in the latter; 8. Hysterosomal setae are shorter:
e1
255– 280,
e2
188–214,
f2
270–290,
h1
273–288,
h2
265–285 and
h3
175–205 vs.
e1
303,
e2
231,
f2
318,
h1
310,
h2
338 and
h3
309.
Etymology
This species is named after the region of origin,
Hamedan province
,
Iran
.
Material examined
The specimens were collected from soil and litter beneath forest trees (blackthorn trees,
Prunus spinose
L. (
Rosaceae
), Nahavand region (34
°
08′ 48″ N, 48
°
13′ 26″ E),
01.05.2015
,
Hamedan
province,
Iran
,
by
F. Masoudian. All
specimens (
holotype
and three
paratypes
) are deposited in the
Collection
of the
Acarology Laboratory
,
University of Bu-Ali
Sina
,
Hamedan
,
Iran
.