A checklist of the water mites of Central Asia with description of six new species (Acari, Hydrachnidia) from Kyrgyzstan
Author
Pešić, Vladimir
Department of Biology, University of Montenegro, Cetinjski put b. b., 81000 Podgorica, Montenegro.
Author
Smit, Harry
Naturalis Biodiversity Center, P. O. Box 9517, 2300 RA Leiden, The Netherlands.
text
Acarologia
2018
2018-01-31
58
1
165
185
journal article
8469
10.24349/acarologia/20184236
3c0084e1-d3c9-4633-8e39-1513f2148596
2107-7207
4487493
644AC1B6-76EB-49C3-9FDE-0C10C0D5AD7B
Torrenticola
(
Torrenticola
)
kyrgyzica
n. sp.
(
Figure 2
)
Zoobank:
9CE2E5A0-B7CA-453B-A6D5-8F17A2F6BD0B
Type material —
Holotype
female (
RMNH
),
Kyrgyzstan
, KR8
Chon-Kemin NP
, upper part
of stream near Ashu resort, Kalman Ashu village,
42°42.276’N
,
76°05.101’E
,
1644 m
asl.,
10.vii.2013
, leg. Pešić & Smit, dissected and slide mounted.
Diagnosis — Female (Male unknown). Idiosoma elongated (dorsal shield L/W ratio 1.6); Cxgl-4 subapical; medial suture line of Cx-II+III long (> 100 μm); P-2 with a laterally compressed, longish (> 30% of ventral margin), anteriorly directed ventrodistal extension; P-4 L/H ratio 4.6.
Description — Female — Idiosoma elongated; dorsal shield without colour pattern; gnathosomal bay U-shaped, proximally rounded; Cxgl-4 subapical, only slightly posterior to Cx-I tips; medial suture line of Cx-II+III relatively long; suture lines of Cx-IV extending posteriorly beyond posterior margin of genital field, laterally curved; genital field pentagonal in shape; excretory pore on the level with Vgl-2, both slightly away from the line of primary sclerotization; gnathosomal rostrum long (
Figure 2E
), ventral margin in lateral view curved; P-2 nearly equal in length as P-4, ventral margin of P-2 distally with a laterally compressed, longish (>30% of ventral margin), anteriorly directed and apically serrated hyaline extension and a very short seta laterally at base of projection; P-3 with a shorter, subrectangular, apically serrated ventrodistal projection, and a moderately long seta laterally at base of projection; P-4 slender, with ventral tubercles pointed and separated, bearing one long and three short setae (
Figure 2D
).
Measurements — Idiosoma (ventral view:
Figure 2C
) L 846, W 463; dorsal shield (
Figure 2B
) L 659, W 408, L/W ratio 1.6; dorsal plate L 619; frontal plate L 141-150, W 50, L/W ratio 2.8-3.0; shoulder plate L 191-192, W 66, L/W ratio 2.9; shoulder/frontal plate L 1.28-1.36. Gnathosomal bay L 150, Cx-I total L 294, Cx-I mL 142, Cx-II+III mL 116; ratio Cx-I L/Cx- II+III mL 2.54; Cx-I mL/Cx-II+III mL 1.23. Genital field L/W 169/149, ratio; distance genital field-excretory pore 184, genital field-caudal idiosoma margin 242.
Gnathosoma — palp total L 350; dL/H, dL/H ratio: P-1, 35/30, 1.17; P-2, 112/53, 2.1; P-3, 72/47, 1.53; P-4, 114/25, 4.56; P-5, 17/-, -; L ratio P-2/P-4 0.98. Gnathosomal base vL 378; chelicera total L 416.
Discussion — The combination of a flanged palp with subapical Cxgl-4, only slightly posterior of Cx-I tips, makes the new species similar to
Torrenticola malaisei
(Lundblad, 1941)
,
T. prionipalpis
(Lundblad, 1941)
, and
T. lamellifera
(Lundblad, 1941)
, all known from
Burma
(
Lundblad 1969
). The latter species has been synonymized by
Wiles (1997)
with
T. malaisei
, but recently this synonymization has been rejected by
Pešić
et al.
(2012)
. Females of
T. malaisei
and
T. lamellifera
can be distinguished from those of
T. kyrgyzica
by their more roundish idiosoma, a short medial suture line of Cx-II+III, and a longer ventral seta on P-3 (see
Wiles 1997
). Moreover
T. malaisei
has a stouter P-4.
Torrenticola prionipalpis
(Lundblad, 1941)
, known from a single male, has a roundish idiosoma, a more slender P-4, a smaller ventral seta on P-2, and P-4 ventral tubercle, ending in two tips separated by a concavity, with four short setae (see
Wiles 1997
).
Etymology — Named after the country where the new species was found.
Distribution —
Kyrgyzstan
; known only from the
locus typicus
(
Figure 10D
).