New species and records of heterostigmatic mites (Acari: Prostigmata: Heterostigmata) phoretic on scarabaeid dung beetles (Coleoptera: Scarabaeidae) from northwestern Iran
Author
Sobhi, Mohammad
Author
Hajiqanbar, Hamidreza
Author
Mortazavi, Azim
text
Zootaxa
2017
4276
3
427
434
journal article
32852
10.11646/zootaxa.4276.3.7
1fb4f153-ffd3-4a35-8c38-928fd9908878
1175-5326
807016
58D2FF44-1C01-42EA-9545-F1FC3D860881
Pavania khiavensis
Sobhi & Hajiqanbar
sp. nov.
(
Figs. 1
,
2
)
Description.
FEMALE (n=5 measured). Length of idiosoma 122 (112–121), width 83 (69–83). Gnathosoma (
Figs. 1
A, B): length of gnathosoma 27 (27–32), width 23 (23–29). Gnathosomal capsule rounded, subquadrangular in dorsal aspect, slightly longer than wide; cheliceral setae
ch
1 15 (15–19) and
ch
2 8 (9–13) distinctly barbed,
ch
1 blunt-ended. Dorsomedian apodeme well developed. Cheliceral stylets 9 (11–11) long, curved and hooked. Subcapitulum with subcapitular setae
su
7 (6–10) smooth, located on posterior half. Pharynx invisible. Palpi conspicuous, exceeding apex of gnathosomal capsule, femorogenu with smooth and pointed setae
dGe
5 (5–7) and
dFe
4 (4–5), tibiotarsus with two solenidia, outer one longer than inner; minute palpcoxal setae
pp
inserted near to articulation of each palp with gnathosomal capsule.
Idiosomal dorsum (
Fig. 1
A): Ovoid in shape. All dorsal shields ornamented with sparse and fairly deep dimples. Posterior margins of dorsal shields without projections, only slightly undulate. Dorsal idiosomal setae barbed and distinctly blunt-ended except setae
v
2
which is needle like,
sc
2 which is attenuated and
h
2 indistinctly barbed in distal half. Prodorsal shield subrectangular, its anterior margin almost curve and posterior margin straight, with setae
v
1 15
(16‒16),
v
2
5 (5‒7),
sc
2 37 (37‒42), trichobothria (
sc
1) present, broken in
holotype
and
paratypes
, setae
v
1
shorter than distance between their bases,
v
2
short and located posterolaterally to
v
1.
Median shield of tergite C with setae
c
1 19 (18‒19) and each lateral shield with seta
c
2 22 (22‒23),
c
1 approximately 0.8 times longer than
c
2. Tergite D with setae
d
19 (19‒20) and cupuli
ia
situated posterior to seta
d
, seta
d
and
c
1 subequal. Tergite EF with setae
e
15 (14‒16),
f
19 (18‒19) and 1 pair of cupuli
im
placed closer to setae
e
on its inner posterolateral side (not visible in
holotype
), setae
f
longer than
e
. Tergite H with setae
h
1 13 (12‒13) and
h
2 51 (49‒55), seta
h
2 almost 4 times longer than
h
1. Distances between dorsal idiosomal setae:
v
1–
v
1 21
(21‒24),
v
2–
v
2 28
(28‒33),
v
1–
v
2
5 (5‒6),
sc
2–
sc
2 29 (28‒32),
c
1–
c
1 20 (21‒23),
d–d
38 (37‒41),
e–e
39 (35‒41),
f–f
27 (26‒30),
e–f
10 (9‒11),
h
1–
h
1 11 (9‒10),
h
2–
h
2 20 (18‒23),
h
1–
h
2 7 (3‒7).
FIGURE 1.
Pavania khiavensis
Sobhi & Hajiqanbar
sp. nov
.
, Female: A―idiosomal dorsum, B—idiosomal venter.
Idiosomal venter (
Fig. 1
B). Ventral apodemes well developed; apodemes 1 joined with prosternal apodeme; apodemes 2 not reaching to prosternal apodeme; both apodemes 3 and 4 not joined to reduced poststernal apodeme. Coxal field I with setae 1
a
6 (6‒8), 1
b
6 (6‒8), 1
c
6 (6‒8), smooth and needle-like, all these three setae subequal in length. Dorsolateral margins of coxal fields I with spine-like process. Coxal field II with setae 2
a
11 (10‒13), 2
b
6 (5‒7), 2
c
9 (8‒10), setae 2
a
almost two times longer than 2
b
, setae 2
a
smooth and 2
c
distinctly barbed. Coxal field III with subequal setae 3
a
8 (8‒10), 3
b
8 (8‒10), 3
c
9 (7‒11), setae 3
c
indistinctly barbed. Coxal field IV with setae 4
a
8 (8‒9), 4
b
9 (9‒9), 4
c
8 (7‒8), setae 4
b
longer than 4
a
and 4
c
, smooth and needle-like. Genital plate with setae
g
1 3 (4‒4),
g
2 3 (3‒4) short, subequal and needle-like. Aggenital plates with weakly barbed seta
ag
8 (6‒7) and one small porous area each; pseudanal plate with setae
ps
6 (7‒8) indistinctly barbed and blunt-ended.
Legs (
Fig. 2
): Leg I (
Fig. 2
A). Thicker than other legs. setal formula: 4‒2‒6(2)‒11(2). Tarsus with 4 slightly blunt-ended eupathidial setae
p’
,
p”
,
ft’
and
ft”
, rest of setae on leg I seta-like and pointed; seta
tc’
subequal with
tc”
and more than two times longer than
pl’
; solenidion ω1 7 (7‒7) prominent and finger shaped; solenidion ω2 2 (2‒3) somewhat clavate. Tibia with eupathidion
k
stiff and blunt-ended; solenidion ϕ1 6 (6‒7) finger shaped and longer than ϕ2 3 (3-4) somewhat clavate. Seta
d
indistinctly barbed and two times as long as femoral seta
l”
, seta
l”
distinctly barbed. Trochanter with two spine-like processes. Leg II (
Fig. 2
B). Setal formula: 2‒1‒4(1)‒6(1). Most setae of leg smooth, attenuated and pointed except setae
d
and
v”
Ti,
l’
Ge and
d
and
v”
Fe which are indistinctly barbed; seta
pl”
shortest on tarsus, solenidion ω 4 (4–4) finger shape; solenidion ϕ 3 (3–3) similar to w; seta
l’
on genu blunt-ended and longer than setae
d
and
v”
on femur, femoral seta
v”
blunt ended. Trochanter with two short spine-like processes near each other. Leg III (
Fig. 2
C). Setal formula: 1‒1‒4‒5. Most setae of leg weakly barbed, and pointed except setae
v’
Ge and
d
Fe which are blunt-ended; on the tarsus seta
tc’
longer than its segment length; seta
d
of femur shorter than seta
v’
of the genu. Leg IV (
Fig. 2
D). Setal formula: 1‒1‒4‒5. Setae of leg weakly barbed pointed, except seta
d
Fe which is blunt-ended; on tarsus seta
pl”
subequal with seta
pv’
and longer than its segment length; on tibia, seta
l’
longer than
d
; seta
v’
of genu longer than seta
d
on the femur.
FIGURE 2.
Pavania
khiavensis
Sobhi & Hajiqanbar
sp. nov
.
, Female: A—leg I in dorsal view, B—leg II in dorsal view, Cleg III in dorsal view, D—leg IV in dorsal view.
MALE unknown.
Type
material.
Female
holotype
(slide MS
14052016
-pk1) and
12 paratypes
,
IRAN
,
Ardabil Province
, forest park in vicinity of
Meshgin-shahr
,
38.23°N
,
47.41°E
, under the metanotum of
Euoniticellus fulvus
(Goeze)
(
Coleoptera
:
Scarabaeidae
) collected in dung pads of cow,
14 May 2016
, coll.
M. Sobhi.
Other
material.
About
40 specimens
, same data as holotype, stored in ethanol.
Etymology.
The specific epithet refers to the ancient name of Meshgins-hahr in
Ardabil province
, northwestern
Iran
.
Differential diagnosis.
The new species is similar to three species of the
fusiformis
species group:
P. tadjikistanika
Sevastianov, 1980
;
P. kamalii
Hajiqanbar and Khaustov, 2010
; and
P
.
fusiformis
Lombardini, 1949
, by sharing the presence of trichobothria and setae
h
2 four to five times longer than
h
1. This new species differs from
P. tadjikistanika
by the following characters: setae
f
less than 1.5 times longer than
e
; and setae
e
and
h
1 subequal and setae on coxal fields II not subequal (setae
e
and
f
subequal, setae
e
longer than
h
1 and setae on coxal fields II subequal in
P. tadjikistanika
). The new species differs from
P. kamalii
by having setae
c
1 shorter than
c
2, and setae
d
and
f
subequal and slightly longer than
e
(setae
c
1 longer than
c
2, setae
f
1.5 times longer than
d
and more than two times longer than
e
in
P. kamalii
). It also differs from
P
.
fusiformis
by having barbed dorsal idiosomal setae except
v
2
and
sc
2, and setae
f
slightly longer than
e
(all dorsal idiosomal setae weakly barbed and setae
f
more than two times longer than
e
).
Remarks.
The scarabaeid genus
Euoniticellus
Janssens, 1953
belongs to the tribe
Oniticellini
(
Scarabaeidae
:
Scarabaeinae
) and is one of the dung beetles that buries dung at the ends of tunnels created beneath a dropping, where it is used as adult and larval food (
Philips, 2016
).