Eustigmaeus mites from Turkey (Acari: Stigmaeidae)
Author
Sali
Author
Doğan, H
text
Journal of Natural History
2005
2005-03-31
39
11
835
861
http://dx.doi.org/10.1080/00222930400001558
journal article
10.1080/00222930400001558
1464-5262
4668774
Eustigmaeus absens
n. sp.
(
Figures 8
,
9
)
Type materials
Holotype
female and
94 paratype females
from moss and lichen on grassy soil,
Beğendik Village
,
Olur
,
Erzurum
,
29 August 2001
.
Female
Holotype
: length of body (excluding gnathosoma) 417, width 320.
Figure 8.
Eustigmaeus absens
n. sp.
(female): (A) dorsal view; (B) dorsal ornamentation; (C) dorsal setae.
Dorsum
Dorsal shields polygonally dimpled, dimples bearing fine punctations. Surface between dimples with a few fine punctations. Margins of dorsal shields and anterior edge of hysterosomal shield less sclerotized. Fossettes on dorsal shields as illustrated. Prodorsal shield with four pairs of setae and one pair of eyes. Hysterosomal shield with five pairs of setae,
e
2
absent. Suranal shield with two pairs of setae. Dorsal body setae notched, with axial core. Postocular setae
sci
small. Setae
h
1
and
h
2
dissimilar to other dorsal body setae, densely notched,
h
1
with core but
h
2
without core. Dimensions of setae as follows:
υi
70,
υe
7,
sci
77,
sce
52,
c
1
87,
c
2
23,
d
1
90,
d
2
56,
e
1
91,
f
1
83,
h
1
50,
h
2
23. Distance between setae:
υi–υi
28,
υe–υe
127,
υi–υe
67,
sci–sci
207,
υe–sci
50,
sce–sce
297,
sci–sce
73,
c
1
–c
1
100,
d
1
–d
1
190,
c
1
–d
2
117,
c
1
–d
1
110,
c
1
–f
1
237,
d
2
–
d
2
300,
d
1
–
d
2
70,
e
1
–e
1
157,
d
1
–e
1
87,
d
1
–f
1
133,
f
1
– f
1
107,
e
1
–f
1
41,
h
1
–h
1
43,
h
2
–h
2
95,
h
1
–h
2
36.
Figure 9.
Eustigmaeus absens
n. sp.
(female): (A) ventral view; (B) lateral view.
Venter
Setae
c
2
similar to
sci
, humeral shields with dimples. Humeral regions with major and minor callosities covered by dimples, incorporated in the margins of the dorsal shields. Coxisternal shields completely divided with polygonal dimples and bearing
1a
,
3a
and
4a
. Surface on coxae densely punctated and with faint reticulations. Aggenital shield with faint reticulations, two pairs of subequal setae. Pseudanal covers with fine punctations, three pairs of setae, subequal in length. Suranal shield ‘‘V’’-shaped with dimples.
Legs
Leg I 320, leg II 247, leg III 250, leg IV 300. Number of setae (solenidia in parentheses) on leg segments (I–IV) as follows: tarsi 14(
v
)-10(
v
)-8(
v
)-8(
v
), tibiae 7(
w
,
w
p)-6(
w
p)-6(
w
p)- 6(
w
p), genua 4(
k
)-4(
k
)-1-1, femora 6-5-3-2, trochanters 1-1-1-1, coxae 2-2-2-2. All tarsi with solenidion
v
. Lengths of solenidia on tarsi:
v
1
23,
v
2
17,
v
3
6,
v
4
4. Lengths of solenidia on tibiae:
w
8,
w
p
1
16,
w
p
2
13,
w
p
35
w
p
4
7.
Male
Unknown.
Etymology
The name of this new species,
absens
, refers to the absence of setae
e
2
.
Remarks
This species is unique in that the hysterosomal shield bears five pairs of setae and trochanter III bears one seta. It may belong to a new genus, as numbers and positions of dorsal body setae are considered as generic significance. However, it seems prudent to await the descriptions of more species lacking setae
e
2
, thus strengthening the generic significance of their character.