Two new species of Pyemotes closely related to P. tritici (Acari: Pyemotidae)
Author
Yu, Lichen
Author
Zhang, Zhi-Qiang
Author
He, Limin
text
Zootaxa
2010
2723
1
40
journal article
46926
10.5281/zenodo.199922
c180c0d7-a3f1-47b0-a48c-86748aa303d1
1175-5326
199922
Pyemotes zhonghuajia
sp. nov.
(
Figs 1–12
)
Pyemotes phloeosinus
Han
et al.
2008
: 72
nom. nud.
Description of male (
Figs 1–6
)
Size
. Idiosoma 185–232 long, 105–128 wide.
Gnathosoma
. Gnathosomal body 26–29 long, 26–32 wide (
Fig. 1
). Seta
ch
1 3–6 long, antero-medial in location; seta
ch
2 5–6 long, postero-lateral to
ch
1. Subcapitular setae absent (
Fig. 2
). Palpal femoral seta (Fe) 13–14 long, much longer than other setae on ventral gnathosoma (
Fig. 2
). Palpal genual seta (Ge) 5 long. Palpal tibiotarsal seta 3–6 long. Palpal solenidion ω 3 long.
Prodorsum
. Prodorsal shield longer than wide, anterior margin strongly convex (
Fig. 1
). Seta
v
1
a pit only on each side. Setae
v
2
4–8 long. Setae
sc
1 6–16
long, longer than
v
2.
Setae
sc
2 73–89 long, half as thick as setae
d
; long and thin, 1.7–2.1 times as wide as
sc
2–
sc
2. Distance between setal bases:
v
1–
v
1 18–22
;
v
2–
v
2 38
–44;
v
1–
v
2 12–15
;
v
2
–
sc
1 5–6;
sc
1–
sc
1 38–47, nearly as wide as
sc
2–
sc
2;
sc
2–
sc
2 37–46;
sc
1–
sc
2 6–7.
Hysterosomal dorsum.
Plate
CD
sub-circular in shape (
Fig. 1
). Setae
c
1 23–33
long. Setae
c
2 22–48
long. Distances
c
1–
c
1 42–53 wide, 1.1–1.3 times as wide as
sc
2–
sc
2. Setae
d
100–106 long, long and thick, 1.2–1.3 times as long as
sc
2, about half as long as body length. Distance
d–d
26–32, 0.5–0.7 times as wide as
c
1–
c
1. Plate
EF
wider than long. Setae
e
thin and short, 10–12 long. Setae
f
66–84 long, thick, 0.7–0.9 times as long as setae
d
. Distance
f–f
11–18 wide, about half as wide as
d–d
. Setae
h
1 7–9 long. Setae
h
2 minute, 1 long, bacilliform, much shorter than
h
1. Distance
h
1–
h
1 7–13
apart. Setae
ps
1 6–9 long. Setae
ps
2 3–4 long, a thickened peg, shorter than
ps
1. Setae
ps
3 5–6 long.
Idiosomal venter.
Apodeme 1 short, anterolaterally just reaching base of trochanter I, the pair forming an angle about>90° medially (
Fig. 2
). Apodeme 2 strongly tapered in distal 1/3, mediad 2/3 not as thick as prosternal apodeme. Sejugal apodeme not well developed. Prosternal apodeme psteriorly extending to level of insertion of setae
2a
. Setae
1a
12–16 long, close, but sometimes obviously separated from apodeme 1. Setae
1b
9–11 long, close to anterolateral end of apodeme 2. Distance
1a–1a
. 15–19. Setae
2a
14–21 long, widely apart from apodeme 2, extending beyond base of
2b
. Setae
2b
13–15 long. Distance
2a–2b
12–13;
2a–2a
22–29, 1.3–1.7 times as wide as
1a–1a
. Apodeme 3 strong, not connecting with each other but connecting with apodeme 4 and apodeme 5. Apodeme 4 strong, not connecting with each other medially, but nearly connecting with apodeme 5 of the same side.
Apedeme 5 strong and long. Setae
3a
8–18 long, slightly shorter than
3b
. Distance
3a–3a
24–29 wide, 0.8–1.1 times as wide as
2a–2a
. Setae
3b
15–19 long, not reaching bases of
3a
and
4a
. Distance
3b–3b
45–52 wide, 1.7–2.0 times as wide as
3a–3a
. Setae
3c
16–20 long, close to apodeme 3. Distance
3c–3c
58–70 wide, 2.4–2.8 times as wide as
3a–3a
. Setae
4a
8–9 long. Distance
4a–4a
35–41, 1.3–1.7 times as wide as
3a–3a
. Setae
4b
6–8 long. Distance
4b–4b
15–19 wide, 0.6–0.7 times as wide as
3a–3a
.
FIGURE 1.
Pyemotes zhonghuajia
sp. nov.
(adult male). Dorsal view.
FIGURE 2.
Pyemotes zhonghuajia
sp. nov.
(adult male). Ventral view.
Legs (
Figs 3–6
).
Leg
I 55
–61 long (
Fig. 3
), shorter than other legs.
Trochanter
I 13–16
long, 0.6–0.9 times as long as wide (
Fig. 3
); seta
v'
6–10 long, not reaching base of segment, 0.4–0.8 times as long as trochanter.
Femur
I 17–19
long, 1.3–1.5 times as long as wide, with 4 setae,
d
,
l'
,
l"
,
v"
; seta
d
17–21 long, extending beyond base of
l"
Ge and 0.9–1.1 times as long as femur; seta
l'
9–11 long, 0.5–0.6 as long as
d
; 10–15 long; seta
v''
25–45 long.
Genu
I 9–11
long, 0.8–0.9 times as long as wide, with 4 setae,
l'
,
l"
,
v'
,
v"
; seta
l'
35–42 long, extending beyond distal end of tarsus; seta
l"
28–34 long, about 0.8 time as long as
l'
; seta
v'
12–13 long, about 1.2 times as long as genu; seta
v''
12 long, about as long as
v'
.
Tibia
I 16
long, 1.1–1.5 times as long as wide, with 6 setae and 1 solenidion,
d
,
l'
,
l"
,
v'
,
v"
,
k
, φ (
Fig. 3
); seta
d
40–51 long, 0.8–0.9 times as long as leg I, the longest in leg I, about 4 times as long as tibia; seta
l'
15–21 long, 1.1–1.5 times as long as tibia; nearly 0.4 times as long as
d
; seta
l''
14–21 long, about long as
l'
, nearly 0.4 times as long as
d
; seta
v'
14–16 long, 1.0–1.2 times as long as tibia; seta
v''
18–19 long, 1.1–1.2 times as long as
v'
; microseta
k
8–10 long, over half as long as tibia; solenidion Φ1 4 long, about 0.4 times as long as
k
; solenidion Φ2 absent.
Tarsus
I 13
long, 1.4–1.6 times as long as wide, with 12 setae and 1 solenidion,
pl'
,
pl"
,
pv'
,
pv"
,
ft'
,
ft'
,
tc'
,
tc"
,
p'
,
p"
,
s
,
u'
, ω (
Fig. 1
); seta
pl'
26–35 long, 2.0–2.7 times as long as tarsus; seta
pl''
22–30 long, about 0.8 times as long as
pl'
; seta
pv'
8–9 long, about 0.6 times as long as tarsus; seta
pv''
5-6 long, 0.6–0.7 times as long as
pv'
; seta
ft'
9–11 long, eupathidial, 0.7–0.8 times as long as tarsus; seta
ft''
10–13 long, eupathidial, 1.0–1.2 time as long as
ft'
; setal pair
tc'
9 long, eupathidial, about as long as
ft'
; and
tc''
10-12 long, eupathidial; seta
p'
9–11 long, eupathidial, about equal length of
ft'
; seta
p''
8–9 long,eupathidia, about equal length of
ft'
; seta
s
4–7 long, as long as
pv''
; seta
u'
obscured;
u''
3–5 long; solenidion ω 6 long, expanded in mid length and then tapered distally. Claw a small hook.
Leg
II 63
–74 long (
Fig. 4
).
Trochanter
II 14–16
long, 0.5–0.6 times as long as wide; with 1 seta,
v'
, 10–14 long, reaching or extending beyond base of trochanter.
FIGURES 3–4.
Pyemotes zhonghuajia
sp. nov.
(adult male). 3, leg I; 4, leg II.
FIGURE 5.
Pyemotes zhonghuajia
sp. nov.
(adult male). Leg III.
Femur
II 20–24
long, 1.6–1.7 times as long as wide, with 3 setae,
d
,
l'
,
v"
; seta
d
26–34 long, extending beyond base of
d
Ti; seta
l'
10–18 long, 0.4–0.5 as long as
d
; seta
v''
14–16 long, about half as long as
d
.
Genu
II 10
long, 0.8–0.9 times as long as wide; with 3 setae,
l'
,
l"
,
v'
; seta
l'
12–17 long, 1.2–1.7 times as long as genu; seta
l''
18–22 long, 2.0–2.2 times as long as genu, longer than l'; seta
v'
16–19 long, about as long as
l'
.
Tibia
II 13–15
long, 1.2–1.3 times as long as wide; with 4 setae,
d
,
l'
,
v'
,
v"
; seta
d
48–60 long, 0.7–0.9 times as long as leg II, the longest in leg II; seta
l'
17–22 long, 0.7–0.4 times as long as
d
; seta
v'
17–31 long, 1.4–1.7 times as long as
l'
; seta
v''
17–37 long, 1.6–2.0 times as long as
l'
; solenidion Φ absent.
Tarsus
II 17–21
long, 2.0–2.3 times as long as wide; with 7 setae and 1 solenidion,
tc"
,
tc'
,
pl"
,
pv'
,
pv"
,
u'
,
u"
, ω; seta
tc'
18–26 long, about 0.7 times as long as
tc"
; seta
tc''
23–33 long, about 2.2 times as long as tarsus; seta
pl''
11–13 long, 0.5–0.7 as long as
tc'
; setal pair
pv'
11–14 long, 1.0–1.2 times as long as
pl"
;
pv''
11-12 long, about time as long as
pl"
; seta
u'
12–18 long, nearly half as long as
tc"
; and
u''
13–17 long, about as long as
u'
and
pv"
; solenidion ω 5–6 long, shorter than Ta I, thin throughout most of length and tapered in distal end. Claw not strongly built (relatively thin).
Leg III 104–117 long (
Fig. 5
), the longest of all legs.
FIGURE 6.
Pyemotes zhonghuajia
sp. nov.
(adult male). Leg IV.
Trichanter
III 29–35
long, 1.40–1.6 times as long as wide; seta
v'
15–22 long, longer than 1/2 length of segment (
Fig. 5
).
Femur
III 35
–41 long, 2.1–2.9 times as long as wide; with 2 setae,
d
,
v'
(one specimen has 3 setae on one leg but 2 on the other); seta
d
63–84 long, nearly 0.7 times as long as leg III, extending beyond tip of leg III (including claw), as long as
d
Ti; seta
v'
15–25 long, 0.4–0.7 times as long as femur.
Genu
III 13–16
long, 1.0–1.4 times as long as wide; with 3 setae,
l'
,
l"
,
v'
; setal pair
l'
33–50 long, 2.1–3.7 times as long as genu, extending beyond mid-length of tarsus; seta
l''
21–29 long, 1.4–2.0 times as long as genu, extending beyond mid-length of tarsus; seta
v'
17–21 long, 1.0–1.5 times as long as genu.
Tibia
III 19–22
long, 1.8–2.0 times as long as wide; with 4 setae,
d
,
l'
,
v'
,
v"
; seta
d
71–91 long, 0.7–0.8 times as long as leg III, long and thick, thickest in leg III, as long as
d
of Fe; seta
l'
26–31 long, about 1/3 as long as d; seta
v'
25–31 long, 0.8–1.0 times as long as l'; seta
v''
28–34 long, 0.9–1.3 times as long as
l'
.
Tarsus
III 20–26
long, 2.4–2.6 times as long as wide; with 7 setae,
tc"
,
tc'
,
pl"
,
pv'
,
pv"
,
u'
,
u"
; seta
tc'
38 long, 0.8–0.9 times as long as tarsus; seta
tc''
39–42 long, 1.6–1.8 times as long as tarsus; seta
pl''
14–20 long, 0.6–0.9 times as long as tarsus; seta
pv'
15–17 long, 0.8–1.0 times as long as pl"; seta
pv''
13–16 long, about 0.9 times as long as
pv"
; seta
u'
20–26 long, 0.5–0.7 times as long as
tc'
; seta
u''
10–18 long, 0.7–1.4 times as long as
pv"
. Claw not strong.
Leg
IV 86
–97 long (
Fig. 6
).
Trochanter
IV 22–28
long, 1.0–1.3 times as long as wide; with 1 seta,
v'
, 11–16 long (
Fig. 6
).
Femur
IV 37
–42 long, 2.5–3.0 times as long as wide; ventral margin concave; with 2 setae,
d
,
v'
; seta
d
65–82 long, the thickest and the longest in leg IV, 0.8–0.9 times as long as leg IV, 1.8–2.3 times as long as femur; seta
v'
9–11 long, 0.2–0.4 times as long as femur.
Genu
IV 13–15
long, 1.1–1.5 times as long as wide; with 2 setae,
l"
,
v'
; seta
l''
11–22 long, 0.8–1.3 times as long as genu;
v'
11–18 long.
Tibia
IV 19–21
long, 1.8–2.1 times as long as wide; with 4 setae and 1 solenidion,
d
,
l'
,
v'
,
v"
, ω; seta
d
24–37 long, 1.2–1.4 times as long as tibia; seta
l'
12–15 long, 0.4–0.5 times as long as
d
;
v'
12–13 long, as long as
l'
;
v''
13–16 long, 1.0–1.1 times as long as
v'
; solenidion Φ 10–12 long, extending beyond base of claw, its base close to or at distal end of tibia.
Tarsus
IV 5–7
long, about as long as wide; with 5 setae and 1 claw,
tc'
,
tc"
,
pv'
,
pv"
,
u'
, claw; seta
tc'
20–30 long, 3.2–6.0 times as long as tasus; seta
tc''
8–9 long, 1.1–1.7 times as long as tasus; seta
pv'
5–8 long, as long as tarsus; seta
pv''
4–5 long, 0.5–0.8 slightly shorter than
pv'
; seta
u'
5–12 long, 0.8–1.0 times as long as
tc"
. Claw strong, finger-like.
Description of female (
Figs 7–12
)
Size.
216–294 long, 92–113 wide.
Gnathosoma
. Gnathosomal body 39–43 long, 35–37 wide. Seta
ch
1 8 long; seta
ch
2 9–10
long Subcapitular setae 8–10 long. Palpal femoral seta (
Fe
) 14–19 long. Palpal genual seta 7–8 long. Palpal tibiotarsal seta 5–8 long. Palpal solenidion 2–3 long. Palpal supracoxal seta (e) slightly shorter than distance between setal bases of
e
and
Fe
.
Prodorsum
. Prodorsal shield posterior margin convex, striate faintly. Setae
v
1 16
–20 long. Setae
v
2 12
–15 long. Setae
sc
1 17–18
long; its capitular body 11–12 long, 7 wide. Setae
sc
2 74–88 long, reaching and ofte extending beyond posterior margin of C plate. Distance between setae:
v
1–
v
2 12–14
;
v
2
–
sc
2 11–13
;
v
1
–
sc
2 19–21
;
sc
2–
sc
2 43–46;
v
2–
v
1
/
v
2
–
sc
2 often 1, rarely>1.
Hysterosomal dorsum.
Plate
C
posterior margin emarginated medially (
Fig. 7
). Setae
c
1 20–24
long, 0.7–0.9 times as long as
c
2. Setae
c
2 24–29
long. Distances
c
1–
c
1 41–46, about as wide as
sc
2–
sc
2. Plate
D
posterior margin concave in middle slightly (not straight). Setae
d
21–30 long. Distance
d–d
29–40. Plate
EF
posterior margin straight or slightlyconvex in middle. Setae
e
9–16 long. Setae
f
43–47 long, 0.5–0.6 times as long as
sc
2. Distance
f–f
19–24, 0.6–0.8 times as wide as
d–d
. Setae
h
1 25–29
long. Setae
h
2 9–11
long. Distance
h
1–
h
1 15–19
wide, 0.7– 0.8 times as wide as f–f. Setae
ps
1 minute, less than half distance
ps
1–
ps
1. Setae
ps
2 absent. Setae
ps
3 absent.
Idiosomal venter.
Apodeme 1 just reaching, sometimes slightly extending beyond base of trochanter I; pair forming an angle of>90° medially. Apodeme 2 curved abruptly close to posterolateral angle of trochanter I, and weakened medially, not connecting with prosternal apodeme. Prosternal apodeme strong, extending posteriorly beyong level of insertions of setae
2a
. Setae
1a
16–18 long, at most as long as
1a–1a
(16–20). Setae
1b
14–15 long, close to apodeme 2. Setae
2a
29–31 long. Setae
2b
16–20 long. Distance
1b–1b
40–43,
2a–2a
16–19, 0.8–1.0 times as wide as
1a–1a
,
2b–2b
40–41. Apodeme 3 shorter than apodeme 4. Apedeme 5 short and weaker in distal end. Setae
3a
23–27 long. Distance
3a–3a
18–20, 1.0–1.2 times as wide as
2a–2a
. Setae
3b
29–33 long, obviously longer than
3a
. Distance
3b–3b
35–41. Distance
3a–3b
26–29. Distance
3a–3c
18–21. Distance
3b–3c
16–21. Setae
3c
20–22 long. Distance
3c–3c
49–52. Setae
4a
16–30 long. Distance 32–39, about 0.8–0.9 times as wide as
3b–3b
. Setae
4b
16–22 long. Distance
4b–4b
10–16, 0.3– 0.5 times as wide as
4a–4a
. Tegula subtriangular, posterior margin slightly convex (
Fig. 8
). Setae
ag
16–20 long about twice distance
ag–ag
(8–10).
FIGURE 7.
Pyemotes zhonghuajia
sp. nov.
(adult female). Dorsal view.
FIGURE 8.
Pyemotes zhonghuajia
sp. nov.
(adult female). Ventral view.
Legs (
Figs 9–12
).
Leg
I 70
–73 long (excluding claw) (
Fig. 9
).
Trochanter
I 15–17
long, about 0.9 times as long as wide, with 1 seta,
v'
; 7–8 long, extending beyond base of segment.
FIGURES 9–10.
Pyemotes zhonghuajia
sp. nov.
(adult female). 9, leg I; 10, leg II.
Femur
I 20–21
long, nearly 1.3 times as long as wide; with 4 setae
d
,
l'
,
l"
,
v"
; seta
d
14–18 long, extending beyond base of
l"
Ge; seta
l'
slgihtly longer than
v'
TrI; seta
l''
18-19 long, often longer than d and reaching base of
l"
Ge; seta
v''
46–59 long, extending beyond distal end of tarsus, over 0.8 times as long as leg I, the longest in leg I. Genu
I 11–14
long, nearly as long as wide; with 4 setae,
l'
,
l"
,
v'
,
v"
; seta
l'
36–37 long, 2.6–3.4 times as long as genu, nearly reaching distal end of tarsus and the longest in segment; seta
l''
31-34 long, 0.8-0.9 times as long as
l'
; seta
v'
16–17 long, 0.4–0.5 times as long as l'; seta
v''
17 long, as long as
v
'.
Tibia
I 20–12
long, nearly 1.5–1.6 times as long as wide; with 6 setae and 2 solenidia,
d
,
l'
,
l"
,
v'
,
v"
,
k
, 2φ; seta
d
55–59 long, 2.8–3.0 times as long as tibia and 0.8 times as long as leg I; seta
l'
and seta
l''
22–28 long, 0.4–0.5 times as long as
d
; seta
v'
20–25 long, 1.0–1.2 times as long as tibia; 1.1–15 times as long as
v'
of genu; seta
v''
15- 20 long, about 0.7 times as long as
l
'; microseta
k
8 long, about 0.9–1.0 times as long as solenidion 1; solenidion Φ1 8–9 long, thin to expanded distally; solenidion Φ2 2 long.
Tarsus
I 14–16
long, 1.6–1.7 times as long as wide; with 13 setae and 1 solenidion,
pl'
,
pl"
,
pv'
,
pv"
,
ft
',
ft"
,
tc'
,
tc"
,
p'
,
p"
,
s
,
u'
,
u"
, ω; seta
pl'
39–47 long, about 2.8–3.3 times as long as tarsus, the longest in tarsus, and 0.6 times as long as leg I; seta
pl''
33–41 long, 0.8–0.9 times as long as
pl
'; seta
pv'
13–16 long, about 0.3–0.5 times as long as pl"; seta
pv''
7–10 long, 0.4 0.8 times as long as
pv'
; seta
ft'
11–13 long, eupathidium, 0.7–0.8 times as long as tarsus; seta
ft''
10–15 long, eupathidium, about 1.2 times as long as
ft'
; seta
tc'
eupathidium, about as long as ft'; seta
tc''
9-14 long, eupathidium, 0.8–1.2 times as long as
tc'
; seta
p'
eupathidium, about as long as
tc
'; seta
p''
eupathidium, 0.7–1.0 times as long as tc"; seta
s
9–11 long, 0.6 times as long as tarsus; seta
u'
2–4 long;
u''
3–4 long; solenidion ω 5–6 long, slightly expanded and distally tapered. Claw strong.
Leg
II 65
–73 long (
Fig. 10
).
Trochanter II subtriangular,18.5 long, nearly 1.3 times as long as wide; with 1 seta,
v'
13 long, extending beyond base of segment.
Femur
II 19–20
long, nearly 1.5–1.7 times as long as wide; with 3 setae,
d
,
l'
,
v"
; seta
d
17–20 long, just extending beyond distal end of genu, nearly 0.9 times or as long as femur, obviously longer than
l'
and
v'
; seta
l'
10–14 long, over 0.6 times as long as
d
, nearly reaching base of
l'
Ge; seta
v''
12–15 long, 1.1 times as long as
l
'.
Genu
II 11–14
long, 1.0–1.2 times as long as wide; with 3 setae
l'
,
l"
,
v'
; seta
l'
19–22 long, nearly 1.5–1.7 times as long as genu; seta
l''
16-25 long; seta
v'
16–22 long, about as long as
l"
.
Tibia
II 13–16
long, over 1.4–1.6 times as long as wide; with 4 setae and 1 solenidion,
d
,
l'
,
v'
,
v"
, φ; seta
d
31– 43 long, 1.9–3.3 times as long as tibia, as long as
v
'; seta
l'
16–25 long, about 0.3–0.7 times as long as
d
; seta
v'
24– 43 long, as long as d; seta
v''
38–41 long; solenidion Φ 2–3 long, thin.
Tarsus
II 17–22
long, 2.2–2.7 times as long as wide; with 7 setae and 1 solenidion,
tc"
,
tc'
,
pl"
,
pv'
,
pv"
,
u'
,
u"
, ω; seta
tc'
14–17 long, 0.3–0.4 times as long as
tc"
; seta
tc''
40–48 long, nearly 2.3–2.5 times as long as tarsus, 0.5– 0.7 times as long as leg II; seta
pl''
11–15 long, about 1/4 as long as
tc"
; seta
pv'
14–17 long, 0.8–1.2 as long as
tc'
; seta
pv''
16–21 long, nearly 1.0–11 times as long as
tc
'; seta
u'
16–21 long, nearly 1.0–11 times as long as
tc
'; seta
u''
11–13 long; solenidion ω 3–4 long, expanded slightly.
Leg
III 88
–92 long (
Fig. 11
).
Trichanter
III 25–28
long, 1.8–2.4 times as long as wide; with 1 seta,
v'
15–22 long, about 0.6–0.8 times as long as trochanter, extending beyond base of
Tr
III.
Femur
III 23–25
long, 2.3–2.4 times as long as wide; with 2 setae,
d
,
v'
; seta
d
subditally located, 20–25 long, 0.7–0.8 times as long as femur, extending beyond base of tibia; seta
v'
20–24 long, about as long as
d
.
Genu
III 12–13
long, 1.2–1.4 times as long as wide; with 3 setae,
l'
,
l"
,
v'
; seta
l'
21–28 long, extending beyond distal end of tibia, over 1.7–2.5 times as long as genu; seta
l''
21–28 long, extending beyond distal end of tibia, over 1.7–2.5 times as long as genu; seta
v'
15–21 long.
Tibia
III 13–20
long, 1.5–1.9 times as long as wide; with 4 setae and 1 solenidion,
d
,
l'
,
v'
,
v"
, φ; seta
d
42–48 long, 2.4–2.8 as long as tibia, about half as long as leg III; seta
l'
26–30 long, 0.5–0.7 times as long as d; seta
v'
33 long, nearly 1.9–2.1 times as long as tibia,1.1–1.4 times as long as
l'
; seta
v''
36 long, about as long as
v'
; solenidion Φ 2–3 long.
Tarsus
III 21
long, about 2.7 times as long as wide; with 7 setae,
tc"
,
tc'
,
pl"
,
pv'
,
pv"
,
u'
,
u"
; seta
tc'
17 long, about 1/3 as long as
tc"
; seta
tc''
45–52 long, 0.5–0.6 times as long as leg III, 2.0–2.4 times as long as tarsus; seta
pl''
11–12 long, about 0.7–08 times as long as
tc'
; seta
pv'
17–20 long, 1.0–1.2 times as long as tc'; seta
pv''
15–17 long, about 0.9 times as long as
tc'
; seta
u'
20–25 long, 1.1–1.6 times as long as
pv'
; seta
u''
14 long, about as long as
pv"
.
Leg
IV 97
–106 (
Fig. 12
).
Trochanter
IV 22–25
long, nearly 1.3–1.8 times as long as wide; with 1 seta,
v'
18–25 long, 0.8–0.9 times as long as trochanter.
Femur
IV 29–32
long, 1.8–3.6 times as long as wide; with 2 setae,
d
,
v'
; seta
d
25 long, about 0.8 times as long as femur, just reaching base of tibia; seta
v'
21–27 long, 1.1–1.3 times as long as
v'
Tr
.
Genu
IV 13
long, 1.3–1.5 times as long as wide; with 2 setae,
l"
,
v'
; seta
l''
20–28 long, 1.7–2.0 times as long as genu;
v'
17–27 long, 0.7–1.3 times as long as
l"
.
Tibia
IV 18–20
long, about 1.8–1.9 times as long as wide; with 4 setae,
d
,
l'
,
v'
,
v"
; seta
d
43–58 long, extending beyond tip of leg, 2.4–3.0 times as long as tibia, about half as long as leg IV; seta
l'
29–32 long, 0.5–0.7 times as long as d;
v'
25–32 long, 0.5–0.6 times as long as d;
v''
27–31 long, nearly as long as
l'
.
FIGURES 11–12.
Pyemotes zhonghuajia
sp. nov.
(adult female). 11, leg III; 12, leg IV.
Tarsus
IV 21–25
long, 2.6–3.4 times as long as wide; with 6 setae,
tc"
,
tc'
,
pl"
,
pv'
,
pv"
,
u'
; seta
tc'
24–27 long, about 0.2 times as long as tc", 1.0–1.2 times as long as tarsus '; seta
tc''
112–138 long, about 1.1–1.4 times as long as leg, the longest in leg I, 4.6–6.6 times as long as tarsus; seta
pl''
14–16 long, 0.6–0.7 times as long as
tc'
; seta
pv'
22–27 long, 0.9–1.3 times as long as tc'; seta
pv''
24–32 long, 0.9–1.3 times as long as
pv'
; seta
u'
29–36 long, 1.0– 1.2 times as long as
pv"
.
Specimens examined
Holotype
male, collected on
7 June 1999
from adults of
Sinoxylon japonicum
Lesne
on
Diospyros kaki
by Changxin XU in Lianhe Viliage, Ji County, Tianjing,
China
(sample number as 57.11.1.xiong-beijing-1 1);
paratype
female and
6 males
, same data as
holotype
.
Paratypes
8 males
(slide id 1993#1, 2, 3), collected on
22 June 1993
, Zunhua County, Hebei,
China
, parasitic on
Phloeosinus hopehi
Schedl
on
Biata orientalis
.
Paratypes
1 male
and
1 female
, collected from
Phloeosinus hopehi
in Beijing,
China
by Liong
2 in
2003 (slides 45644, 45650)
Holotype
and some
paratypes
deposited in IZCAS, one
paratype
each in NZAC and BMNH.
Etymology
The specific name is from Chinese words: zhonghua (
China
) and jia (beetle)—referring to beetles being the main host of this parasitic species found in
China
; used as a noun in apposition.
Remarks
This new species was previously identified by Dr John Moser as
P. tritici
based on material from
China
submitted by Mr Deping
Xiong (e.g. Zhang
et al.
2008
; see also footnote 1). Our detailed studies of morphology revealed numerous features in both adult females and males that show differences between this new species, the
P. tritici
from the
USA
and
P. turkeyensis
sp. nov.
(see key to species above). In addition, femur IV (female) of
P. zhonghuajia
sp. nov
(L/W ratio 2.7-3.4) is slender than that in
P. tritici
(2.1–2.5).
Genetically, the new species differs from
P. tritici
in sequences of tox34 gene by 11.25% (
Han
et al.
2008
).
We also found that biologically, the new species does not parasitize the larvae of
Plodia interpunctella
(Hübner)
, whereas
P. tritici
is a natural enemy of that species.
Hosts and distribution
In addition to
Sinoxylon japonicum
and
Phloeosinus hopehi
, this species was also found on
Dermestidae
,
Buprestidae
,
Stenhomalus taiwanus
,
Phloeosinus
sp.,
Cryptolestes turcicus
,
Scolytus japonicus
,
S. seulensis
.
In laboratory rearing for mass-releases in the field, this species also feeds on the following:
Coleoptera
(
Lasioderma serricorne
Fabricius
,
Martianus dermestoides
,
Sitophilus zeamais
Motschulsky
,
Sitophilus oryzae
,
Cryptorrhynchus lapathi
L.,
Semanotus bifasciatus
Motschulsky
,
Dendroctonus valens
LeConte
,
Brontispa longissima
Gestro
,
Tenebrio molitor
,
Scarabaeidae
,
Dermestes
spp.),
Lepidoptera
(
Helicoverpa armigera
Hubner
,
Conopia rhododendri
Beut
,
Hyphantria cunea
Drury
,
Cydia trasias
Meyrick
,
Galleria mellonella
,
Zeuzera leuconotum
,
Sitotroga cerealella
Oliver
) and
Hymenoptera
(
Formicidae
,
Chalcididae
,
Apidae
).
This species is widely distributed in Hebei, Shandong, Tianjing and Beijing.