A survey of Diphya Nicolet, 1849 (Araneae: Tetragnathidae) from South Africa
Author
Omelko, Mikhail M.
0000-0002-1556-6248
Federal Scientific Center of East Asia Terrestrial Biodiversity, Far Eastern Branch, Russian Academy of Sciences, Vladivostok 690022, Russia Far Eastern Federal University, Laboratory of Ecology and Evolutionary Biology of Aquatic Organisms (LEEBAO), School of Natural Sciences, Vladivostok 690091, Russia & omelkom @ gmail. com; https: // orcid. org / 0000 - 0002 - 1556 - 6248
omelkom@gmail.com
Author
Marusik, Yuri M.
0000-0002-4499-5148
Institute for Biological Problems of the North, Portovaya Street 18, Magadan 685000, Russia & Department of Zoology & Entomology, University of the Free State, Bloemfontein 9300, South Africa & Zoological Museum, Biodiversity Unit, University of Turku, FI- 20014, Finland & yurmar @ mail. ru; https: // orcid. org / 0000 - 0002 - 4499 - 5148
yurmar@mail.ru
Author
Lyle, Robin
0000-0002-5279-5306
Biosystematics: Arachnology, ARC-Plant Health and Protection, Pretoria, South Africa & LyleR @ arc. agric. za; https: // orcid. org / 0000 - 0002 - 5279 - 5306
text
Zootaxa
2020
2020-12-30
4899
1
259
279
journal article
8803
10.11646/zootaxa.4899.1.14
9730d2b0-31d4-421c-8ca9-d7c8cf5b89e4
1175-5326
4400533
1CD410D3-F192-46D0-8BF2-A6E977BEFA33
Diphya simoni
Kauri, 1950
Figures 1
D–F, 2D-E, 3C, E–F, 4A–B, F, H–I, 5A–B, E, G–I, 6D, 7C, H, 8C, 9A–B, D–E, 10F–K, 11A, 12A–P, 13D, K–L
Diphya simoni
Kauri, 1950: 8
, fig. 6 (
♀
holotype
from
SOUTH AFRICA
:
Mpumalanga
:
Kruger National Park
,
Pretoriuskop
Camp,
4.XI.1948
, Lund Museum, with dissected and lost epigyne—examined); Marusik, 2017: 127, figs 7–9, 19.
Diphya capensis
Simon, 1894: 744
(
nomen nudum
);
Bonnet, 1956: 1477
(marked as
nomen nudum
).
Diphya tanikawai
Marusik, 2017: 135
, figs 1–6, 13–18 (
♀
holotype
and
paratype
from
SOUTH AFRICA
:
Western Cape
:
Cape
Town, Table Mt., Platteklip Gorge,
33.9608°S
,
18.408307°E
, leg. Y.M. Marusik,
29.I.2017
, NCA—examined)
syn. nov.
Diagnosis.
Both sexes of this species differ clearly from other South African species by having a distinct pattern on the carapace, which is lacking in the other species, or presenting only as a light median band. The male palp of this species is most similar to that in
D. foordi
sp. nov.
and differs by the the straight anterior margin of the conductor (
vs
. roundly bent), the shorter cymbial process (1/5 of cymbial length
vs
. 1/2), and the relatively shorter embolic loop, ca. 1/2 of cymbial length
vs
. almost as long as cymbium. Females of
D. simoni
differ clearly from the other species by the shape of the septum, and the septum extended over the plate of the epigyne (
Figs 12M
, O–P, 13L).
Description.
Male
(NCA 2008/3048).
TL 2.46. CL 1.41, CW 1.06. Carapace dark brown, with yellow median band. Shape and color of median band differing between males: wide, yellow, narrow at middle part (
Fig. 1E
), divided in 2 large, yellow spots (
Fig. 1D
), or in one male, these spots poorly visible (
Fig. 1F
). Clypeus yellowish, twice higher than AME diameter. Chelicerae and mouthparts dark brown. Chelicerae with 3 promarginal and 3 retromarginal teeth. Retromarginal teeth significantly smaller than promarginal ones. Sternum yellowish, with 3 pairs of black spots at edges and black longitudinal band. Femora of all legs light brown; III–IV with poorly visible or distinct rings. Patellae light brown; III–IV lighter than Pa I-II with poorly visible gray spots at lateral sides. Tibiae light brown; III–IV with gray rings. Metatarsi and tarsi I–II light-brown; III–IV lighter than I–II. Abdomen dorsally dark-brown, surrounded by white guanine line and with poorly visible pair of black spots at frontal part. Lateral sides dark gray, with thin longitudinal yellow stripes. Ventrally dark gray, surrounded by yellowish spots.
Palp and leg segment lengths
Fe |
Pa |
Ti |
Mt |
Ta |
Total |
palp |
0.37 |
0.09 |
0.07 |
- |
0.36 |
0.89 |
I |
1.46 |
0.49 |
1.24 |
1.41 |
0.71 |
5.31 |
II |
1.29 |
0.46 |
1.11 |
1.21 |
0.66 |
4.73 |
III |
0.79 |
0.29 |
0.53 |
0.57 |
0.40 |
2.57 |
IV |
1.00 |
0.29 |
0.74 |
0.86 |
0.43 |
3.31 |
Legs I-II spination |
Fe |
Pa |
Ti |
Mt |
I |
3p2r |
1d |
2d3p1r |
1d |
II |
1d2(3)p3r |
1d |
2d1p1r |
1d |
Palp as in
Figs 7C, H
,
8C
, A–B, D–E; femur as long as cymbium; cymbial process short, 3 times shorter than cymbium, length:width ratio 2; conductor straight, gradually tapering; embolus long, almost as long as cymbial length.
Female
(NCA 2011/2888).
TL 3.65, CL 1.64, CW 1.24. Carapace yellowish, with dark-brown edges and with Y or X markings. Clypeus yellowish, somewhat lower than AME diameter. Ocular area yellow. Chelicerae and mouthparts light brown. Chelicerae with 3 promarginal and 3 or 4 retromarginal teeth. Retromarginal teeth significantly smaller than promarginal ones. Sternum brown, with dark edges and longitudinal stripe. Legs as in male, but spots and rings more distinct. Abdomen dorsally light brown, with number of guanine spots and couple of large black spots in frontal part. Lateral sides dark gray, with yellow spots and stripes. Ventrally as in males, but lighter.
Palp and leg segment lengths
Fe |
Pa |
Ti |
Mt |
Ta |
Total |
palp |
0.43 |
0.21 |
0.40 |
- |
0.44 |
1.49 |
I |
1.63 |
0.64 |
1.49 |
1.57 |
0.83 |
6.15 |
II |
1.50 |
0.50 |
1.29 |
1.51 |
0.73 |
5.53 |
III |
1.09 |
0.37 |
0.73 |
0.79 |
0.46 |
3.43 |
IV |
1.36 |
0.43 |
0.99 |
1.07 |
0.50 |
4.34 |
Spination of legs I–II |
Fe |
Pa |
Ti |
Mt |
I |
1p |
- |
1d3p1r |
1d |
II |
1d1r |
1d |
2d2(1)p1r |
1d |
Mt I–II and distal parts Ti I–II with row of prolateral spines.
Epigyne as in
Figs 11A
,
12
A–P, 13D, K–L; shape of epigyne and its appearance variable, especially septal stem and base (
Figs 12
A–L); septum about 1.33 times wider than long, stem short, shorter than septal base, with subparallel lateral margins or diverging posteriorly (stem triangular), stem with distinct lateral pockets (
Lp
); whole septal base extending across epigynal plane, central part of base with extended lateral parts (
Figs 12M,P
,
13L
), central part (= septum base,
Sb
) well distinct in ventral view in some specimens (
Figs 12A,L
) or almost indistinct (
Figs 12C
, E–F). Receptacles pear-shaped, with globular heads and thinner posterior part, globular parts slightly spaced.
Other material examined.
SOUTH AFRICA
:
Eastern Cape
:
Cape
St. Francis
,
34°11.4’S
,
24°49.2’E
, leg.
J. Leroy
,
8.IV.2007
(plants),
1♀
(
NCA 2010
/121);
Hogsback,
Amatola Mountains
,
32°35.4’S
,
26°55.2’E
, leg. UFS Entomology students,
25.III.2007
(foliage, beating), 1♁
4♀
(
NCA 2007
/1240);
Same locality and collectors,
4.IV.2006
(pine plantation, sweepnet),
1♀
(
NCA 2010
/2666);
Jeffrey’s Bay
,
34°03.6’S
,
24°54.6’E
, leg.
L. Wiese
,
17.VI.2006
(orb-webs),
2♀
(
NCA 2010
/3143);
Port Elizabeth
,
Klein
River
Gorge Wilderness,
33°57.0’S
,
25°36.6’E
, leg.
J. Neethling
&
C. Luwes
,
7.XII.2011
(bushveld, litter sifting), 1♁ (
NCA 2013
/1080)
.
KwaZulu-Natal
:
Midlands
,
Baynesfield
,
29°40.620’S
,
29°55.32’E
, leg.
I. Yekwayo
,
1.I.2014
(grassland,
pit trap
), 1♁ (
NCA 2015
/1559),
1♀
(
NCA 2015
/1558);
Midlands
,
Good Hope Plantation
,
Boston
,
29°39.046’S
,
29°58.565’E
, leg.
I. Yekwayo
,
1.I.2014
(grassland,
pit trap
), 1♁ (
NCA 2015
/1547),
1♀
(
NCA 2015
/1560)
.
Mpumalanga
:
Mariepskop
,
Vacuum
,
24°34.8’S
,
30°52.2’E
,
L. Taylor
,
1.II.2014
(grassland, mountain), 1♁
1♀
(
NCA 2015
/4967)
.
North West
:
Zeerust
,
25°31.8’S
,
26°04.8’E
, leg.
N. Hahn
,
2.IV.2010
(ground habitat, rocky outcrop, active search below knee),
1♀
(
NCA 2011
/2888)
.
Western Cape
:
Hermanus
,
34°24’S
,
19°15’E
, leg.
V.L. Hamilton-Attwell
,
6.XII.2006
(litter sifting), 1♁ (
NCA 2008
/3048);
Table Mountain National Park
,
Constantia Nek
,
34°00.6’S
,
18°24.6’E
, leg.
C. Uys
,
7.XI.2008
(litter sifting),
1♀
(
NCA 2010
/2531);
Same
locality,
Cecilia Rooikat
,
Pinus
33°59.4’S
,
18°25.2’E
, leg.
C. Uys
,
23.V.2008
,
1♀
(
NCA 2010
/3128)
.
FIGURE 4.
Female habitus of
Diphya simoni
Kauri, 1950
(A–B, F, H–I),
D. vanderwaltae
sp. nov.
(C),
D. wesolowskae
sp. nov.
(D) and
D. foordi
sp. nov.
(E, G) (B Holotype of
D. tanikawai
Marusik, 2017
; H Holotype of
D. simoni
). A–F, H; G–I Habitus, dorsal; G, I Prosoma, dorsal.
Comments.
The epigyne of the
holotype
female of
D. simoni
was not found; maybe it remained on the preparation slide. Study of the numerous specimens with a differently developed septum, and females collected with males, lead us to conclusion that the two species names should be synonymized, although their type localities are far away from each other. All specimens that we consider as
D. simoni
have a well-developed pattern on the carapace, and females have distinct hoods (pockets) on the septal stem.
Distribution.
This species has the widest range among African
Diphya
and is known across the whole of
South Africa
, from the
Western Cape Province
to
Mpumalanga Province
(type locality) (
Fig. 14
). The type locality of
D. simoni
is located far away from other localities but is very close to those of
D. leroyorum
sp. nov.
(known from the
holotype
male only). This can be caused either by mislabeling, or because we wrongly synonymized
D. tanikawai
. Types of both species and all studied specimens have a distinct carapace pattern, which is absent in
D. leroyorum
sp. nov.