Redescription of East Palaearctic ground spider Drassyllus biglobus Paik, 1986 (Araneae: Gnaphosidae)
Author
Marusik, Mikhail M. Omelko Yuri M.
Author
Kim, Byung-Woo
text
Zootaxa
2013
3686
2
297
300
journal article
10.11646/zootaxa.3686.2.10
fc952ece-1e5e-4bcb-bd2b-de56284b4aed
1175-5326
216612
08EF7CCD-6575-4C85-98FB-B1F61A7CC288
Drassyllus biglobus
Paik, 1986
Figs 1–7
D. bilobosus
Paik 1986
: 6
, figs 8–15 (Ƥ),
holotype
examined.
D. truncatus
Paik 1992
: 69
, figs 7–14 (3),
holotype
examined.
Syn. n
.
D. bilobosus
:
Namkung 2002
: 465
, fig. 37.6a–c (3Ƥ);
Namkung 2003
: 468
, fig. 37.6a–c (3Ƥ); Jung
et al.
2005: 172, figs 10, 55, 109–110 (3Ƥ).
D. truncatus
:
Namkung 2002
: 468
, fig. 37.9a-b (3);
Namkung 2003
: 471
, fig. 37.9a–b (3); Jung
et al.
2005: 175, figs 14, 113–114 (3).
Types
:
D
.
biglobus
holotype
Ƥ:
KOREA
, Mt. Geumosan (
36°08’N
,
128°24’E
), Gyeongsangbuk-do,
18.06.1980
(Y.H. Kim & M.H. An).
D
.
truncatus
holotype
3:
KOREA
, Mt. Palgongsan (
35°59’N
,
128°38’E
), Gyeongsangbuk-do, 6.05.1984.
D
.
truncatus
paratypes
233:
KOREA
, Mt. Geumosan (
36°08’N
,
128°24’E
), Gyeongsangbuk-do,
28.08.1980
(E.H. Kim & M.H. An).
FIGURES 1–7.
Habitus and copulatory organs of
Drassyllus biglobus
.
1–2—habitus, male and female respectively; 3– 4—male palp, ventral and retrolateral respectively; 5, 7—epigyne, ventral; 6—epigyne, dorsal. 6–7—epigyne after maceration. Abbreviations:
Ad
—anterior epigynal duct,
Am
—anterior epigynal margin,
Ma
—median apophysis,
Mh
— hook of the median apophysis,
Pd
—outer margin of posterior epigynal duct,
Se
—septum,
Sg
—gland of
Ad
,
Sp
— spermatheca,
Ta
—tegular apophysis,
Tt
—tooth of the tegular apophysis.
Material examined:
KOREA
: 51933 and 239ƤƤ (only selected locatilies from
Korea
are shown, see
Fig. 8
for complete records): 13 6ƤƤ Mt. Hallasan National Park (
33°24’N
,
126°29’E
), Jeju Province, April-June, 1986, (J.R. Jun & J. Namkung); 1423359ƤƤ, Jaesurichi (
36°42’23”N
,
127°54’55”E
), 5.09.2011; 8ƤƤ, Mt. Juwangsan National Park (
36°21’N
,
128°11’E
), Gyeongsangbuk-do,
13.10.2008
, (B.W. Kim); 30337ƤƤ, Mohang (
35°35’19”N
,
126°30’45”E
) 3.07.2009; 583334ƤƤ, Pyungchandong (
37°36’15”N
,
126°59’06”E
),
24.08.2010
; 233324ƤƤ, Osaekyaksu (
38°05’26”N
,
128°26’57”E
),
12.08.2010
; 11332ƤƤ,
16.09.2010
, Palleyaksu (
38°04’28”N
,
126°23’06”E
); 6332ƤƤ, Biseondae (
38°09’59”N
,
128°27’71”E
), Mt. Seoraksan National Park, Gangwon-do,
30.09.2010
(B.W.Kim); 21337ƤƤ, Temple Yasuam (
35°24’35”N
,
127°37’55”E
),
21.09.2011
.
RUSSIA
, Maritime Province: 63 4Ƥ, Ussuriskii District, litter in broad-leaved forest near Gornotaezhnoe Village,
43°42’N
,
132°09’E
, May-June 2007 (M.M. Omelko).
Diagnosis
. Males of this species can be easily distinguished by their truncate tibial apophysis. The bulbus of
D. biglobus
is rather similar to those of
D. coreanus
Paik, 1986
and
D. excavatus
(Schenkel, 1963)
because of the small tooth on the tegular apophysis. Females of
D. biglobus
are somewhat similar to those of
D. excavatus
(Schenkel, 1963)
in the shape of anterior epigynal margin, but differ significantly in the shape of their median septum and insemination ducts.
Drassyllus biglobus
females are also similar to
D. amamiensis
Kamura, 2011
known from southern
Japan
and can be easily distinguished by the shorter lateral margins of the epigynal fovea.
FIGURE 8.
Distribution of
Drassyllus biglobus
.
Description
. Measurements (3/Ƥ). Total length 6.80/9.05. Carapace: 2.80/2.95 long, 2.20/2.25 wide. Spination of leg I and II are the same in both sexes: femur with 2 dorsal and 1 retrolateral spine, tibia with 2 retroventral spines and metatarsi with 2 pairs of ventral spines.
Male. Carapace and sternum light brown (
Fig. 1
). Abdomen dark gray with brownish scutum occupying about 1/3 of abdomen. Legs light brown except for tarsi and metatarsi I and II which are yellowish. Palp as in
Figs 3–4
, femur-tibia yellowish, cymbium brown; tibial apophysis about length of tibia, sharply abrupt (truncate) on the top, ventral edge with small spine; median apophysis (
Ma
) longer than wide, hook (
Mh
) placed in the lower part of apophysis close to the tip of tibial apophysis; tegular apophysis (
Ta
) triangular, wider than high, with small tooth (
Tt
) below the tip; embolus long, longer than ½ of cymbial length.
Female. Coloration like in male, but somewhat lighter.
Epigyne as in
Figs 5–7
, anterior epigynal margin (
Am
) inverted U-shaped, marginal socket deep (
Fig. 7
), lowest portion of anterior epigynal ducts (
Ad
) with small gland (
Sg
), septum (
Se
) in widest part is not wider than diameter of spermathecae (
Sp
), distance between outer margins of posterior epigynal ducts (
Pd
) not wider than that between outer margins of spermathecae.
Length of legs and leg joints:
| Leg Femur |
Patella |
Tibia |
Metatarsus |
Tarsus |
Total |
| I 2.25/2.45 |
1.20/1.45 |
1.80/2.00 |
1.55/1.65 |
1.30/1.30 |
8.10/8.85 |
| II 1.85/2.05 |
1.05/1.10 |
1.50/1.55 |
1.40/1.40 |
1.15/1.20 |
6.95/7.30 |
| III 1.60/1.85 |
0.85/1.00 |
1.30/1.40 |
1.30/1.50 |
0.95/0.95 |
6.00/6.70 |
| IV 2.30/2.75 |
1.25/1.30 |
2.00/2.25 |
2.05/2.25 |
1.20/1.25 |
8.80/9.80 |
Distribution
. The species is restricted to Far
East Asia
and occurs from Jeju Island in East
China
Sea to Ussuriysk, south part of Maritime Province in
Russia
(
Fig. 8
). In
Russia
it was found in a single locality, while in
Korea
it was found in almost 50 localities across whole country. The
type
localities of
D. biglobus
and
D. truncatus
lie close to each other.