First Description Of The Male Of Drassodes Kaszabi (Aranei, Gnaphosidae)
Author
Fomichev, A. A.
Author
Marusik, Y. M.
text
Vestnik Zoologii
2015
2015-10-01
49
2
467
470
http://dx.doi.org/10.1515/vzoo-2015-0055
journal article
10.1515/vzoo-2015-0055
2073-2333
6452605
Drassodes kaszabi
Loksa, 1965
(
fig. 1–11
)
D. kaszabi
Loksa, 1965: 27
, fig. 46 (
♀
);
Marusik, Logunov, 1995: 183
,
fig. 11–12
(
♀
).
M a t e r i a l e x a m i n e d.
Mongolia
:
Bayan-Ölgii Aimag
: Khongor-Olongiyn-Gol River Valley,
34 km
ENE from
Tolbo Village
,
48°31ʹ N
,
90°43ʹ E
, mountain stony steppe with rocks,
2300 m
,
5.05.2012
,
1 ♀
;
Khovd Aimag
:
Arshantyn-Nuruu Mt. Range
,
46°21ʹ N
,
91°15ʹ E
, mountain stony steppe with rocks,
1700–2100 m
,
15.05.2012
, 2 Ơ,
2 ♀
;
Mongolian
Altai
Mt. Range
(S slope),
Bodonchiyn-Gol River
Basin,
Khondiyn-Gol River Valley
,
46°07ʹ N
,
92°30ʹ E
, semi-desert steppe with rocks, at night,
1800 m
,
17.05.2012
,
1 ♀
;
foothills of Muchar-
Uul Mt.
,
47°09ʹ N
,
92°11ʹ E
, mountain stony steppe with rocks,
1900–2000 m
, 5–
6.05.2012
, 1 Ơ,
2 ♀
(
AF
)
(
ISEA
)
.
D i a g n o s i s. Males of
D. kaszabi
are similar to those of
D. pubescens
(Thorell, 1876)
,
D. dispulsoides
Schenkel, 1963
and
D. cupa
Tuneva,
2005
in having a modified median apophysis (transverse, with bifurcated tip) and a straight embolus, differing from these two species by having a long tibial apophysis, almost as long as the palpal tibia (2 or more times shorter in similar species). The tibial apophysis of
D. cupa
is sharply pointed, but it is not in
D. kaszabi
. Females of
D. kaszabi
differ from other species by having a large epigynal fovea with distinct margins and a small median plate (two times shorter than fovea height).
Fig. 1–11. Diagnostic characters of
Drassodes kaszabi
:
1 — male habitus, dorsal; 2 — male chelicera, posterior; 3–5 — male palp, ventral, retro- and prolateral; 6–8 — bulbus, dorso-retrolateral, prolateral and ventral; 9–10 — epigyne, ventral; 11 — epigyne, dorsal. Scale bar 0.2 mm if not otherwise indicated.
Abbreviations:
Co
— conductor;
Ma
— median apophysis;
Mp
— median plate;
Sp
— spermophor.
D e s c r i p t i o n. Male. Total length 10.3. Carapace: 4.8 long, 3.4 wide. Colouration. Carapace, sternum and legs yellow-brown (
fig. 1
). Chelicerae brown, with 3 promarginal teeth and 1 small retromarginal tooth (
fig. 2
). Maxillae and labium light-brown. Abdomen beige, without pattern.
Leg measurements:
Leg Fe Pt Ti Mt Ta Total I 4.1 2.2 3.8 3.25 2.05 15.4 II 3.85 2.1 3.25 2.95 1.95 14.1 III 3.65 1.75 2.8 2.95 1.9 13.05 IV 4.5 2.0 3.8 4.7 2.25 17.25
Leg spination:
Leg Fm Ti Mt
I d1–1–0 p0–1–1 p1–0–1 v2–0–2 v2–0–0
II d1–1–0 p0–1–1 p1–0–1 v2–0–2 v2–0–0
III d1–1–1 p1–1–1 r0–1–1 d1–0–0 p1–1–1 r2–0–1 v2–2–2 d1–2–0 p1–1–0 r1–1–0 v2–2–0 IV d1–1–1 p0–1–1 r0–2–1 d1–0–1 p1–1–1 r2–0–1 v2–2–2 d1–2–0 p1–1–0 r1–1–0 v2–0–2
Palp as in
fig. 3–8
. Tibia with 2–3 dorsal and 2 prolateral spines. Tibial apophysis long, almost as long as tibia. Spermophor (
Sp
) with three loops, terminal part directed downward (basally). Median apophysis (
Ma
) modified, without hook, much wider than long, almost as wide as tegulum, tip bifurcated. Conductor (
Co
) large, membranous with serrated margins. Embolus strong and straight, slightly shorter than median apophysis width.
F e m a l e. See
Loksa (1965)
and
Marusik, Logunov (1995)
for description. Total length 14.0. Carapace: 4.8 long, 3.3 wide. Colouration as in male.
Leg measurements:
Leg Fe Pt Ti Mt Ta Total I 3.85 2.1 3.15 2.65 1.8 13.55 II 3.65 1.9 2.9 2.55 1.75 12.75 III 3.5 1.75 2.75 2.85 1.8 12.65 IV 4.5 2.0 3.8 4.65 2.0 16.95
Leg spination:
Leg Fm Ti Mt
I d1–1–0 p0–1–1 v2–2–0 v2–0–0
II d1–1–0 p0–1–1 p0–0–1 v2–2–0 v2–0–0
III d1–1–1 p0–1–1 d1–0–0 p1–1–1 r2–0–1 v1–2–2 d1–2–0 p1–1–0 r1–1–0 v2–2–0
IV d1–1–1 p0–1–1 r0–1–1 d1–0–1 p1–1–1 r2–0–1 v2–2–2 d1–2–0 p1–1–0 r1–1–0 v2–0–2
Epigyne as in
fig. 9–11
. Fovea with distinct margins, 1.6 times wider than high. Median plate (
Mp
) about 2.2 times thinner than cavity and almost 2 times shorter than cavity. Each receptacle with 2 large chambers; receptacles span a distance 0.77 times less than cavity width.
S i z e v a r i a t i o n. Male body length varies from 10.0 to 10.7, carapace 4.1–4.8 long and 3.0–3.4 wide. Female body length varies from 9.6 to 14.0, carapace 4.5–5.6 long and 3.2–3.95 wide.
D i s t r i b u t i o n. Western Mongolia (Bayan-Ölgii, Khovd, Uvs, Bayankhongor and Övörkhangai Aimags) and Western
Tuva
(
Russia
).
Fig. 12. Distribution records of
Drassodes kaszabi
:
literature data;
new records.
We thank R. V. Yakovlev (Barnaul,
Russia
), A. N. Nakonechnyi (
Novosibirsk
,
Russia
), A. I. Shmakov (Barnaul,
Russia
), G. G. Khabiev (Aktash,
Russia
) and U. Beket (Ölgii,
Mongolia
) for organizing and undertaking an expedition to
Mongolia
, from where the material treated in this paper was collected. Thanks to S. Koponen (University of Turku,
Finland
) and R. Yu. Dudko (ISEA) for providing institutional facilities. English of the earlier draft was kindly checked and corrected by Sarah Crews (
California
Academy of Sciences,
USA
).